{"title":"Filters","description":"\u003cp\u003eBrowse our Filters collection. Best Price.\u003c\/p\u003e","products":[{"product_id":"astronomik-uhc-e-filter","title":"Astronomik UHC-E Filter","description":"\u003ch2\u003eAstronomik UHC-E Filter\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThe Astronomik UHC-E filter was developed for astrophotography of emission nebulae and comets under light-polluted skies.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Astronomik UHC-E filter enhances the contrast between these celestial objects and the sky background by blocking the typical emissions from street lights, as well as all lines of natural airglow.\u003c\/p\u003e\n\u003cp\u003eWith a Full-Width-Half Maximum (FWHM) of 45nm, the Astronomik UHC-E filter ensures a significant contrast boost while allowing more starlight to pass through compared to the Astronomik UHC filter. In addition, the transmission range of the Astronomik UHC-E filter includes the typical emission bands of comets, making them much easier to photograph.\u003c\/p\u003e\n\u003ch2\u003eOther uses\u003c\/h2\u003e\n\u003cp\u003eThe 1.25\" and 2\" socket models can be used for observations from light-polluted areas.\u003c\/p\u003e\n\u003ch2\u003eAlternatives\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThe Astronomik UHC filter is better suited for photographing gas nebulae in areas with strong light pollution. Its narrower FWHM suppresses the sky background even more effectively.\u003c\/li\u003e\n\u003cli\u003eWe recommend the Astronomik CLS and CLS CCD filters for photographing galaxies and star clusters in areas with moderate light pollution.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSuitability of the Astronomik UHC-E filters\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCMOS and CCD photography:\u003c\/strong\u003e Good, requires an additional Astronomik IR-Block filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSLR photography (original):\u003c\/strong\u003e Good, color balance is shifted, but contrast is enhanced\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSLR photography (astro-modified):\u003c\/strong\u003e Very good, color balance is also good\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSLR photography (MC-modified):\u003c\/strong\u003e Very good, requires an additional Astronomik IR-Block filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eClip-Filters for mirrorless Canon EOS R APS-C cameras\u003c\/h2\u003e\n\u003cp\u003eCanon EOS R APS-C series cameras are an excellent choice for astrophotography. With Astronomik Clip-Filters, you can use our full range of filters with your camera to capture stunning images. Whether paired with a camera lens or a telescope, our clip filters ensure maximum image quality and performance from your setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Astronomik Clip-Filters offer a number of practical advantages that make them an ideal choice for astrophotographers:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalling and removing the Astronomik Clip-Filter is very quick and easy and requires no extra tools or modifications to the camera body. They can be changed at any time, even at night.\u003c\/li\u003e\n\u003cli\u003eAll lens functions, such as focus, aperture, and image stabilization remain fully functional.\u003c\/li\u003e\n\u003cli\u003eThe Astronomik Clip-Filters are held securely in place without stressing the high-quality glass.\u003c\/li\u003e\n\u003cli\u003eThe Astronomik Clip-Filters are designed and optimized for use with both standard camera lenses and telescopes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThrough the Astronomik Clip-Filters, we were able to solve several common issues faced by astrophotographers:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLarge filters for large camera lenses are very expensive.\u003c\/li\u003e\n\u003cli\u003eUsing a filter holder between the camera body and the lens prevents focusing to infinity.\u003c\/li\u003e\n\u003cli\u003eFor very fast telescopes (low f-number) like the Vixen R200SS or the Takahashi “Epsilon” astrograph, a filter drawer or filter wheel can not be used because the distance to the corrector lenses would be changed.\u003c\/li\u003e\n\u003cli\u003eLong exposure times lead to dust settling on the camera’s sensor chip.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditionally, all Astronomik EOS R APS-C Clip-Filters serve as an excellent dust shield, protecting the sensor during long exposures. If you only need a dust shield without filtering effects, the Astronomik MC-Clear EOS R APS-C Clip-Filter is the right choice.\u003c\/p\u003e\n\u003cp\u003eUse Astronomik filters for your Canon EOS R APS-C camera and enjoy marvelous images with an ultra-light equipment!\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #b13b3c;\"\u003eNOTE: Please store the Clip-Filter in the supplied storage box and do not leave it in the camera permanently.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAstronomik filters are diffraction-limited, ensuring that the optical performance (resolution and contrast) of your telescope is not compromised. Thanks to the high-precision machining of the glas substrate, all Astronomik filters are parfocal. The wedge errors are far below all common tolerances. Therefore, all issues concerning focal distances and the exact alignment of images from each color channel are effectively eliminated.\u003c\/p\u003e\n\u003cp\u003eAll Astronomik filters are ideal for modern cameras, including both CMOS- and CCD-based models, ensuring you capture the best possible images with your equipment. Sharpness, contrast, and the absence of any reflections and halos are guaranteed. Even with bright stars in the field of view, nebulae and galaxies will be captured with the finest structures. The Astronomik MFR and MaxFR coatings are designed for optimal performance across a wide range of focal ratios of the optics used.\u003c\/p\u003e\n\u003cp\u003eEvery Astronomik filter undergoes a rigorous quality control process before delivery.\u003c\/p\u003e\n\u003ch2\u003eCompatible Canon EOS R APS-C cameras\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"text-align: center;\"\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R7\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 23px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R10\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 23px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R50\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 23px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R50 V\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 23px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R100\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 23px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eNon-compatible Canon lenses\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"text-align: center;\"\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon RF 14mm f\/1.4 L VCM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 18px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon RF 28mm F2.8 STM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 18px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon RF 35mm F1.8 IS Macro STM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 18px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon RF 85mm F1.2L USM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 18px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon Extender RF 2x\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 18px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon Extender RF 1.4x\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg style=\"width: 18px; height: 18px;\" src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTypical transmission of 94% at 486nm (H-beta)\u003c\/li\u003e\n\u003cli\u003eTypical transmission of 95% at 496nm (OIII)\u003c\/li\u003e\n\u003cli\u003eTypical transmission of 95% at 501nm (OIII)\u003c\/li\u003e\n\u003cli\u003eTypical transmission of 94% at 656nm (H-alpha)\u003c\/li\u003e\n\u003cli\u003eTransmission range: 465nm to 530nm and above 645nm\u003c\/li\u003e\n\u003cli\u003eFull-Width-Half Maximum (FWHM): 45nm\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm (except Astronomik OWB Type 3 and XT filters)\u003c\/li\u003e\n\u003cli\u003eFinely polished optical glass, free of any striae, residual stresses, and bubbles\u003c\/li\u003e\n\u003cli\u003eExtremely scratch-resistant and durable coating\u003c\/li\u003e\n\u003cli\u003eCompletely resistant against high humidity and aging effects\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eDiffraction-limited\u003c\/li\u003e\n\u003cli\u003eOptimized spectral windows\u003c\/li\u003e\n\u003cli\u003eDelivered in a high-quality, long-lasting filter box\u003c\/li\u003e\n\u003cli\u003eMade in Germany\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSelected frame size Astronomik UHC-E Filter\u003c\/li\u003e\n\u003cli\u003ePlastic Storage Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"tab__content tab.box tab__content--active\" data-content=\"tab-3\" aria-labelledby=\"tab-title-3\" aria-hidden=\"false\" role=\"tabpanel\"\u003e\n\u003cspan\u003eManual \u0026amp; Warranty\u003c\/span\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003eAstronomik\u003cspan\u003e \u003c\/span\u003e10 year warranty\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25\" (M28.5)","offer_id":51317666611236,"sku":"xbe1787936865095","price":52.33,"currency_code":"USD","in_stock":true},{"title":"2\" (M48)","offer_id":51317666644004,"sku":"jdy1787936865096","price":84.68,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS APS-C","offer_id":51317666676772,"sku":"hjd1787936865097","price":69.52,"currency_code":"USD","in_stock":true},{"title":"XT Clip-Filter EOS APS-C","offer_id":51317666709540,"sku":"eak1787936865098","price":92.49,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS R APS-C","offer_id":51317666742308,"sku":"cxn1787936865099","price":87.76,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS XL","offer_id":51317666775076,"sku":"asw1787936865100","price":111.49,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS R XL","offer_id":51317666807844,"sku":"uhm1787936865101","price":132.97,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS M","offer_id":51317666840612,"sku":"mwa1787936865102","price":71.41,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Sony alpha 7","offer_id":51317666873380,"sku":"bbu1787936865103","price":98.34,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon XL","offer_id":51317666906148,"sku":"zzu1787936865104","price":95.22,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon Z XL","offer_id":51317666938916,"sku":"tbr1787936865105","price":104.71,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Pentax K-1","offer_id":51317666971684,"sku":"pzy1787936865106","price":99.9,"currency_code":"USD","in_stock":true},{"title":"T-Mount (M42x0.75)","offer_id":51317667004452,"sku":"wno1787936865107","price":89.63,"currency_code":"USD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":51317667037220,"sku":"dhr1787936865108","price":99.9,"currency_code":"USD","in_stock":true},{"title":"31mm","offer_id":51317667069988,"sku":"ywv1787936865109","price":63.71,"currency_code":"USD","in_stock":true},{"title":"36mm","offer_id":51317667102756,"sku":"kyy1787936865110","price":65.25,"currency_code":"USD","in_stock":true},{"title":"50mm","offer_id":51317667135524,"sku":"fwr1787936865111","price":86.05,"currency_code":"USD","in_stock":true},{"title":"M49","offer_id":51317667168292,"sku":"whb1787936865112","price":101.22,"currency_code":"USD","in_stock":true},{"title":"M52","offer_id":51317667201060,"sku":"ydl1787936865113","price":101.22,"currency_code":"USD","in_stock":true},{"title":"M55","offer_id":51317667233828,"sku":"shz1787936865114","price":192.23,"currency_code":"USD","in_stock":true},{"title":"M58","offer_id":51317667266596,"sku":"bgp1787936865115","price":211.45,"currency_code":"USD","in_stock":true},{"title":"M62","offer_id":51317667299364,"sku":"gty1787936865116","price":186.73,"currency_code":"USD","in_stock":true},{"title":"M67","offer_id":51317667332132,"sku":"rrc1787936865117","price":200.01,"currency_code":"USD","in_stock":true},{"title":"M72","offer_id":51317667364900,"sku":"meq1787936865118","price":235.3,"currency_code":"USD","in_stock":true},{"title":"M77","offer_id":51317667397668,"sku":"mve1787936865119","price":205.89,"currency_code":"USD","in_stock":true},{"title":"50 x 50mm² unmounted","offer_id":51317667430436,"sku":"otc1787936865120","price":112.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/astronomik-uhc-e-filter_1.jpg?v=1787936875"},{"product_id":"astronomik-oiii-visual-filter","title":"Astronomik OIII Visual Filter","description":"\u003ch2\u003eAstronomik OIII Visual Filter\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFrom the start, the Astronomik OIII Visual Filter has been very specifically designed for the visual observation of gaseous and planetary nebulae. The extremely narrow pass band of the two OIII lines brings a substantial contrast gain to these lines even under best observation conditions. On faint super nova remnants and faint planetary nebulae the Astronomik OIIIfilter will often make the difference as to whether the object can bee seen or not!\u003c\/strong\u003e The optimal aperture ratio for the use of the filter is 1:3 to 1:15 with apertures of more than 6\" (150mm). Transmission losses and chromatic distortions, which arise with other filters, occur with Astronomik OIII filters only when extremely bright aperture ratios of 1:3 and more come into play. The Astronomik OIII filters thus can expand the view of dispersed objects, generally speaking, to the whole visual field of view of the eyepiece and are not limited to only the center of the eyepiece.\u003c\/p\u003e\n\u003ch4\u003eMain use\u003c\/h4\u003e\n\u003cp\u003eSince enough light must be available to make use of the OIII filter it is best to use this filter with apertures of more than 6\" (150mm). Smaller instruments do not gather enough light for meaningful and satisfying astronomical work. However, please note: Many experienced Deep Sky observers, with apertures of more than 10\" (250mm), prefer using the OIII filter instead of the more versatile UHC filter. Due to the high optical quality of the Astronomik OIII filter substrate you will see the same needle-sharp stars as you would from your regular telescope. [caption id=\"attachment_3936\" align=\"aligncenter\" width=\"592\"]\u003c\/p\u003e\n\u003ch4\u003eSuitability\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (dark skies): Very good, huge contrast enhancement at O III-emission nebulas\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban skies): Very good, huge contrast enhancement at O III-emission nebulas\u003c\/li\u003e\n\u003cli\u003eFilm photography: It depends, very long exposure time\u003c\/li\u003e\n\u003cli\u003eCCD photography: Good, when used with an additional IR-block-filter\u003c\/li\u003e\n\u003cli\u003eDSLR photography (original): Very good, huge contrast enhancement at O III-emission nebulas\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro modified): Very good, huge contrast enhancement at O III-emission nebulas\u003c\/li\u003e\n\u003cli\u003eDSLR photography (MC modified): Good, when used with an additional IR-block-filter\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Deep Sky): Reasonable, if light pollution is a big problem and OIII Objects are beeing observed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specification\u003c\/h3\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/astronomik_oiii_trans.png?v=1687450098\u0026amp;width=700\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan style=\"color: #ff8000;\"\u003eThe major emission lines of artifical light pollution: | Hg 435,8nm | Hg 546,1nm | Hg 577,0nm | Hg 578,1nm | | Na 589,0nm | Na 589,6nm | Na 615,4nm | Na 616,1nm |\u003c\/span\u003e \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan style=\"color: #20a652;\"\u003eThe major emission lines of nebulas: H-β 486,1nm | OIII 495,9nm | OIII 500,7nm | H-α 656,3nm\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003eHow to Read the Chart\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003cb\u003ehorizontal axis\u003c\/b\u003e is the \u003cb\u003eWavelength in Nanometers\u003c\/b\u003e (nm). 400nm is deep blue, at 520nm the human eye senses green and at 600nm red. At 656nm is the famous “H-Alpha” emission line of hydrogen.\u003c\/li\u003e\n\u003cli\u003eThe \u003cb\u003etransmission in %\u003c\/b\u003e is plotted on the \u003cb\u003evertical axis\u003c\/b\u003e.\u003c\/li\u003e\n\u003cli\u003eThe red line shows the \u003cb\u003etransmission of the filter\u003c\/b\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVisual filters\u003c\/b\u003e: The \u003cb\u003egrey\u003c\/b\u003e line in the background shows the relative sensitivity of the human eye at night. The maximum is at ~510nm and drops to longer and shorter wavelengths. You can easily see, that you can´t see anything of the H-alpha line at night (even if you can during daylight!) The sensitivity at 656nm is 0% at night!\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePhotographic filters\u003c\/b\u003e: The grey line in the background shows the sensitivity of a typical CCD sensor.\u003c\/li\u003e\n\u003cli\u003eThe most important \u003cb\u003eartifical emission\u003c\/b\u003e lines are shown in orange. The artifical light pollution is dominated by see mercury (Hg) and sodium (Na), which are used in nearly all streetlights.\u003c\/li\u003e\n\u003cli\u003eThe most important \u003cb\u003eemission lines from nebulas\u003c\/b\u003e are shown in green. The most important lines are from ionized Hydrogen (H-alpha and H-beta) and double ionized oxygen (OIII).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003etyp. 95% transmission at 496nm (OIII)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003etyp. 95% transmission at 501nm (OIII)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eComplete blocking of all disturbing wavelength coverages\u003c\/li\u003e\n\u003cli\u003eThe ideal filter for telescopes 10 \" (25cm) and larger\u003c\/li\u003e\n\u003cli\u003eMain operational use: Planetary nebulas \u0026amp; super nova remnants\u003c\/li\u003e\n\u003cli\u003eNo moisture-sensitivity, no aging, and totally scratch-proof\u003c\/li\u003e\n\u003cli\u003eExcellent carrier material - substrate is optically polished. The optical performance (resolution \u0026amp; contrast) of your telescope is not reduced in any way by the filter.\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\u003cli\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n\u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n\u003cli\u003eAstronomik filters are delivered in a high-quality, long lasting, filter box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the box\u003c\/h3\u003e\n\u003cp\u003eFilter and filter case\u003c\/p\u003e\n\u003ch3\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eAstronomik 10-Year Warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25\" (M28.5)","offer_id":51317667692580,"sku":"npy1787936870062","price":66.34,"currency_code":"USD","in_stock":true},{"title":"2\" (M48)","offer_id":51317667725348,"sku":"kyt1787936870063","price":123.38,"currency_code":"USD","in_stock":true},{"title":"SC Rear Cell (2'' \/ 24TPI)","offer_id":51317667758116,"sku":"hcy1787936870064","price":142.05,"currency_code":"USD","in_stock":true},{"title":"T-Mount (M42 x 0.75)","offer_id":51317667790884,"sku":"mhf1787936870065","price":156.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/astronomik-oiii-visual-filter_1.jpg?v=1787936879"},{"product_id":"astrozap-baader-film-solar-filter","title":"Astrozap Baader Film Solar Filter","description":"\u003ch2\u003eAstrozap Baader Solar Filter\u003c\/h2\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/howtomeasurethesizeen.png?v=1708015233\u0026amp;width=700\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"text\"\u003eWith the Astrozap Baader Solar Filter, the Sun appears in neutral white. Other films and some glass filters produce a blurry \u003c\/span\u003e\u003cspan class=\"text\"\u003ebluish or reddish Solar image, thereby cutting part of the spectrum. Especially with an orange sun, it is \u003c\/span\u003e\u003cspan class=\"text\"\u003every hard to see faculae regions which are visible predominantly in the blue wing of the spectrum.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"text\"\u003eDue to it's neutral color balance, AstroSolar enables the use of various color (or interference) filters \u003c\/span\u003e\u003cspan class=\"text\"\u003ewhich allows the observer to concentrate on certain spectral passbands for investigations of different layers within the solar \"atmosphere\".\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"text\"\u003eThe Astrozap Baader Solar Filter is essentially free from pinholes, since - other than with even the most expensive glass filters - it is coated on both sides, so that the chance of two pinholes overlapping each other is extremely faint. Pinholes do appear, but to 1 out of 10000 only in optical density 2.5! Baader AstroSolar™ safety film has been approved for eye safety by the National Bureau of Standards in Germany, the PTB. Unlike any other Solar Filter on the market, AstroSolar™ is CE-tested according to EG-Norm 89\/686 and EN 169\/92 ( notified body 0196). All processes connected to this product have been thoroughly tested. Coatings are inspected constantly for consistency to ensure your eye safety!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"text\"\u003eBaader AstroSolar™ film Filter cell constructed from lightweight 18Ga. aluminum and powder coated white. Heavy duty threaded inserts and nylon thumbscrews insure a secure fit.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAstrozap Baader Solar Filter\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eLimited One Year Warranty\u003c\/p\u003e","brand":"Astrozap","offers":[{"title":"90mm-100mm - AZ-1000","offer_id":51317667823652,"sku":"ftl1787936870822","price":52.94,"currency_code":"USD","in_stock":true},{"title":"110mm-120mm - AZ-1001","offer_id":51317667856420,"sku":"wtt1787936870823","price":55.33,"currency_code":"USD","in_stock":true},{"title":"120mm-130mm - AZ-1001-1","offer_id":51317667889188,"sku":"msx1787936870824","price":67.06,"currency_code":"USD","in_stock":true},{"title":"136mm-146mm - AZ-1002","offer_id":51317667921956,"sku":"nkb1787936870825","price":55.33,"currency_code":"USD","in_stock":true},{"title":"145mm-155mm - AZ-1002-1","offer_id":51317667954724,"sku":"wkz1787936870826","price":51.97,"currency_code":"USD","in_stock":true},{"title":"104mm-114mm - AZ-1003","offer_id":51317667987492,"sku":"tld1787936870827","price":49.36,"currency_code":"USD","in_stock":true},{"title":"225mm-235mm - AZ-1004","offer_id":51317668020260,"sku":"ubo1787936870828","price":104.48,"currency_code":"USD","in_stock":true},{"title":"235mm-242mm - AZ-1004-1","offer_id":51317668053028,"sku":"cnn1787936870829","price":82.0,"currency_code":"USD","in_stock":true},{"title":"259mm-269mm - AZ-1005","offer_id":51317668085796,"sku":"wvt1787936870830","price":93.43,"currency_code":"USD","in_stock":true},{"title":"269mm-276mm - AZ-1005-1","offer_id":51317668118564,"sku":"abc1787936870831","price":108.03,"currency_code":"USD","in_stock":true},{"title":"288mm-298mm - AZ-1006","offer_id":51317668151332,"sku":"mic1787936870832","price":100.73,"currency_code":"USD","in_stock":true},{"title":"306mm-316mm - AZ-1007","offer_id":51317668184100,"sku":"vwo1787936870833","price":114.83,"currency_code":"USD","in_stock":true},{"title":"315mm-325mm - AZ-1007-1","offer_id":51317668216868,"sku":"ahn1787936870834","price":121.4,"currency_code":"USD","in_stock":true},{"title":"338mm-348mm - AZ-1008","offer_id":51317668249636,"sku":"mas1787936870835","price":118.37,"currency_code":"USD","in_stock":true},{"title":"347mm-357mm - AZ-1008-1","offer_id":51317668282404,"sku":"wzz1787936870836","price":145.69,"currency_code":"USD","in_stock":true},{"title":"395mm-405mm - AZ-1009","offer_id":51317668315172,"sku":"ktk1787936870837","price":93.43,"currency_code":"USD","in_stock":true},{"title":"250mm-260mm - AZ-1010","offer_id":51317668347940,"sku":"qxb1787936870838","price":88.61,"currency_code":"USD","in_stock":true},{"title":"294mm-304mm - AZ-1011","offer_id":51317668380708,"sku":"gvj1787936870839","price":105.55,"currency_code":"USD","in_stock":true},{"title":"155mm-165mm - AZ-1013","offer_id":51317668413476,"sku":"cij1787936870840","price":60.55,"currency_code":"USD","in_stock":true},{"title":"165mm-175mm - AZ-1013-1","offer_id":51317668446244,"sku":"xft1787936870841","price":61.51,"currency_code":"USD","in_stock":true},{"title":"193mm-204mm - AZ-1014","offer_id":51317668479012,"sku":"ufb1787936870842","price":76.45,"currency_code":"USD","in_stock":true},{"title":"205mm-215mm - AZ-1014-1","offer_id":51317668511780,"sku":"omu1787936870843","price":91.17,"currency_code":"USD","in_stock":true},{"title":"215mm-225mm - AZ-1014-2","offer_id":51317668544548,"sku":"sgg1787936870844","price":73.18,"currency_code":"USD","in_stock":true},{"title":"85mm-95mm - AZ-1015","offer_id":51317668577316,"sku":"fjs1787936870845","price":57.23,"currency_code":"USD","in_stock":true},{"title":"174mm-184mm - AZ-1016","offer_id":51317668610084,"sku":"rzy1787936870846","price":71.54,"currency_code":"USD","in_stock":true},{"title":"184mm-194mm - AZ-1016-1","offer_id":51317668642852,"sku":"atk1787936870847","price":71.54,"currency_code":"USD","in_stock":true},{"title":"178mm-188mm - AZ-1016-SE","offer_id":51317668675620,"sku":"rzt1787936870848","price":81.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/astrozap-baader-film-solar-filter_1.png?v=1787936880"},{"product_id":"tele-vue-bandmate-h-beta-filter","title":"Tele Vue Bandmate H-Beta Filter","description":"\u003ch2\u003eTele Vue Bandmate H-Beta Filter\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe Tele Vue Bandmate H-Beta Filter passes the aqua colored hydrogen-beta emission lines found in the Horsehead, California, and other hydrogen emitting nebulae. It is effective for viewing objects that take up the entire field — even when using our wide-angle eyepieces. It’s available in 1.25″ or 2″ mounted format.\u003c\/p\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003eBackground\u003c\/h4\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe first thing you’ll notice is that these filters are produced for us in Germany by Astronomik. Tele Vue and Astronomik are two relatively small companies that adhere to the same philosophy. Do it better, or don’t do it at all; the products, customer, and night sky deserve it.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eDavid Nagler and Gerd Neumann had crossed paths at astronomy shows for years. Both have had their frustrations with the filter business. From passband to thread tolerances, the filter industry seems like the “wild west” of astronomical products. We had been looking to develop a long-term supplier of state-of-the-art, custom filters and approached Astronomik with the idea of reintroducing Tele Vue’s line of premium quality Bandmate filters; guaranteed to perform and fit, with uniformity beyond any competitive brand. Gerd and Eric of Astronomik were excited with the idea of a partnership with Tele Vue. “When we started into Amateur-Astronomy, Tele Vue already was a legendary brand known for its outstanding quality of their telescopes and eyepieces. Today we are proud to team up with them to share our knowledge and experience in filter design and production and bring the best filters possible to all astronomers worldwide.”\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe distinction you’ll find with Bandmate filters is their consistency, achieved by keeping control of the manufacturing and quality control processes each company does so well. All the materials are sourced in Germany. Each filter is: optically tested by Tele Vue in high power-space to ensure no image degradation, tested by Astronomik on a spectrograph to ensure the coating meets design specifications, mechanically tested for fit, cosmetically inspected for pinholes, digs, and sleeks and serialized, all to insure customer satisfaction. All filters are backed with a 10-year warranty against manufacturing defects.\u003c\/p\u003e\n\u003cdiv class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--local_1 panel entry-content\" id=\"tab-local_1\" role=\"tabpanel\" aria-labelledby=\"tab-title-local_1\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eSize: 1.25″ mounted or 2″ mounted\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eIn the Box\u003c\/span\u003e\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--local_2 panel entry-content\" id=\"tab-local_2\" role=\"tabpanel\" aria-labelledby=\"tab-title-local_2\"\u003e\n\u003cp\u003e\u003cspan\u003eBandmate H-Beta Filter\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFilter Case\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty \u003c\/h3\u003e\n\u003cp\u003eTele Vue 10-Years Warranty\u003c\/p\u003e\n\u003cp\u003eTele Vue Bandmate Filters Transmission Graph\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Tele Vue","offers":[{"title":"1.25\" Mounted","offer_id":51317668708388,"sku":"zfb1787936871310","price":91.05,"currency_code":"USD","in_stock":true},{"title":"2\" Mounted","offer_id":51317668741156,"sku":"vpr1787936871311","price":170.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/tele-vue-bandmate-h-beta-filter_1.png?v=1787936880"},{"product_id":"astrozap-full-aperture-solar-filter-391-397mm","title":"Astrozap Full Aperture Solar Filter (391-397mm)","description":"\u003ch2\u003eAstrozap Full Aperture Solar Filter\u003c\/h2\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/howtomeasurethesizeen.png?v=1708015233\u0026amp;width=700\"\u003e\u003c\/p\u003e\n\u003cp\u003ePlease see that document before choosing the size of your filter: How to Choose the right Astrozap Solar Filter\u003c\/p\u003e\n\u003cp\u003eThe Astrozap Full Aperture Solar Filter is offered in size from 41mm to 403mm. These are safe full aperture (sometimes referred as clear aperture) solar filters. This means that it allows the most light possible into the telescope because it allows the full aperture of your telescope to be viewed. The full aperture allows the best possible daytime viewing when there is minimal atmospheric turbulence. If turbulence is present a mask can be put over the end of the filter to effectively reduce the aperture.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThis premium solar filter has an aluminum cell that is secured and centered to the tube end of the telescope with nylon thumb screws and felt padding. The clear aperture is made with high quality hand selected and inspected reflective coated glass. This is the highest quality, durable, glass, full aperture solar filter on the market. The sun is viewed in a natural yellowish-orange image. The filter can be used for direct viewing through the telescope or for photography. The filter box is foam lined for protection and shock absorption during handling. It is durable enough to store the filter while not in use.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications and Size\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSize Matching Specifications for Full Aperture Glass Solar Filters\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSKU #\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOutside Diameter Fit Range (Your optical tube OD needs to be within this range of fit)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTelescopes, Finders and Other Optics that Fit this Filter Size (If your model is not listed, use the \"\u003c\/strong\u003e\u003cstrong\u003eHow to Choose the Right Astrozap Solar Filter\u003c\/strong\u003e\u003cstrong\u003e\" help page.)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1501\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e1 5\/8” (41mm) to1 7\/8” (48mm)\u003c\/p\u003e\n\u003cp\u003eCelestron FirstScope 60 (older), Finders, Small Refractors and Spotting Scopes\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1502\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e1 7\/8” (48mm) to2 1\/8” (54mm)\u003c\/p\u003e\n\u003cp\u003eFinders, Small Refractors and Spotting Scopes\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1503\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2” (51mm) to 2 ¼” (57mm)\u003c\/p\u003e\n\u003cp\u003eFinders, Small Refractors and Spotting Scopes; Celestron 9X50 finder; Williams Optics 7 X 50 finders\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1504\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 3\/8” (60mm) to 2 5\/8” (67mm)\u003c\/p\u003e\n\u003cp\u003eFinders, Small Refractors and Spotting Scopes; Meade: DS-2060, M-40 AZ\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1505\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 5\/8” (67mm) to 2 7\/8” (73mm)\u003c\/p\u003e\n\u003cp\u003eMeade 60 (older models), Refractors and Finders\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1506\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 7\/8” (73mm) to 3 1\/8” (79mm)\u003c\/p\u003e\n\u003cp\u003eCelestron 60; Meade DS-60 EC; Orion 70; Takahashi FS-60; Vixen A70Lf\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1507\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e3 1\/8” (79mm) to 3 3\/8” (86mm)\u003c\/p\u003e\n\u003cp\u003eMeade DS-80EC; StellarVue: NightHawk 80mm (with dew shield), SV80s; Tele Vue Ranger; Takahashi FC-50, FC-60, FC-60C; Williams Optics ZS66, ZenithStar Racing; Zeiss Telementor Refractor\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1508\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e3 3\/8” (86mm) to 3 5\/8” (92mm)\u003c\/p\u003e\n\u003cp\u003eCelestron FirstScope: 60 AZ \u0026amp; EQ, 80 EQ; Meade: ETX-60AT, ETX-70AT; Orion: Observer 60 Altaz \u0026amp; EQ; Tele Vue-76, Tele Vue Pronto; Vixen: A80Mf, A80SSWT, ED81SWT\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1509\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e3 5\/8” (92mm) to 3 7\/8” (98mm)\u003c\/p\u003e\n\u003cp\u003eCelestron 80 (old); Meade DS-70, ETX-80 AT-TC, DS 2080; Orion: ShortTube 80, Observer 70, Astroview 80\/90, Explorer 80\/90; Takahashi SKY 9011; Vixen: ED8sf, ED100sf\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1510\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e3 7\/8” (98mm) to 4 1\/8” (105mm)\u003c\/p\u003e\n\u003cp\u003eMeade ETX 90; Celestron: NexStar 60\/80\/80GT, FirstScope 90EQ; Orion: StarMax 90, Apex 90; StellarVue: NightHawk APLANAT, NIghtHawk Next Generation (with dew shield), SV809D (with dew shield); Questar 3.5; Williams Optics: ZS80 II ED, Megrez 80\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1511\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e4 1\/8” (105mm) to 4 3\/8” (111mm)\u003c\/p\u003e\n\u003cp\u003eAstroPhysics 90mm; Meade DS-90; Tele Vue-85; GP-102; Orion ShortTube 90, GoScope 350; Transporter 70 EQ; Takahashi: FS-78, FCL-90 (Sky 90); Vixen 4;\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1512\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e4 3\/8 (111mm) to 4 5\/8 (117mm)\u003c\/p\u003e\n\u003cp\u003eOrion: ED 80\/100 Refractors, StarMax\/Apex 102, AstroView 100, SkyView Pro 100, C80 SLT; Vixen ED103SWT; Takahashi TSA-102; Williams Optics: Megrez 90\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1513\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e4 5\/8” (117mm) to 4 7\/8” (124mm)\u003c\/p\u003e\n\u003cp\u003eCelestron: FirstScope 76, NexStar 4\/4SE, C4, 102HD; Meade: ETX 105, DSX 102, 2045; StellarVue: SV102ED; Synta SkyWatcher 80 ED; Sky-Watcher: Evostar 80 ED; Questar 4.75”; Takahashi: FSQ-106 NUH\/FSQ-106 ED; Tele Vue: 101, 102; Vixen VMC110L\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1514\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e4 7\/8” (124mm) to 5 1\/8” (130mm)\u003c\/p\u003e\n\u003cp\u003eCelestron C102 HD (older); Meade 5000 ED APO 80mm; Apogee; TMB 105\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1515\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e5 3\/8” (137mm) to 5 5\/8” (143mm)\u003c\/p\u003e\n\u003cp\u003eCelestron FirstScope 102; Meade: 4500, DS-127, 4”APO, DS 2000, DS2114, POLARIS DS 114; Orion: AstroView 120 \u0026amp;120ST, SkyView Pro 120, StarBlast, StarMax 127, SkyView Pro 127, Apex 127; Sky-Watcher: Skymax 127; StellarVue: SV4, SV102T; Takahashi: FS-102, 106 N, FSQ-106; Vixen 102; Williams Optics: ZS110 APO, ZenithStar 105 (with dew shield), ZenithStar 110(with dew shield), FLT 110 APO, Megrez 110\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1516\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e5 5\/8” (143mm) to 5 7\/8” (149mm)\u003c\/p\u003e\n\u003cp\u003eCelestron: C4.5, C5\/5i, FirstScope 114, NexStar 5\/5SE, NexStar 114, 130GT; Meade: ETX 125, 114 EQ; Orion: ShortTube 4.5, SkyQuest XT4.5, 127 Mak.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1517\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e5 7\/8” (149mm) to 6 1\/8” (156mm)\u003c\/p\u003e\n\u003cp\u003eMeade: LXD-55 AR-5, 5000 ED APO 127mm; TeleVue-127NP; Vixen 114\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1518\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e6 1\/8” (156mm) to 6 3\/8” (162mm)\u003c\/p\u003e\n\u003cp\u003eMeade 127 NT; Orion: SpaceProbe 130ST, StarSeeker 130, 130 EDFS; AstroPhysics: 125, 130; Bushnell Newtonian 5” Reflector; Intes Micro MN56\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1519\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e6 3\/4” (171mm) to 7” (178mm)\u003c\/p\u003e\n\u003cp\u003eCelestron: C-150 CR, C-150 HD; Meade 5” APO, DS2130; Orion: SpaceProbe 130, Sky Watcher 6\"; StellarVue: SV5 (with dew shield), SV125 (with dew shield); Takahashi FS-128; TOA-130 (with dew shield), TOA-150; Intes MK 67\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1520\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e7 1\/8” (181mm) to 7 3\/8” (187mm)\u003c\/p\u003e\n\u003cp\u003eAstroPhysics 155; Celestron: NexStar 6\/6SE, C6; Meade LXD 55 6\" S\/Newt; Orion: AstroView 6, SkyView Pro 6 \u0026amp; 6LT, SkyView Pro 3.6 CA, Skyview Deluxe 6 EQ, SkyQuest XT6; Vixen 150\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1521\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e7 5\/8” (194mm) to 7 7\/8” (199mm)\u003c\/p\u003e\n\u003cp\u003eMeade Starfinder, MTS SN6, 6600 6”; Orion: SkyView Pro 150 Mak., DSE; Intes MK 603\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1522\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e8” (203mm) to 8 1\/4” (210mm)\u003c\/p\u003e\n\u003cp\u003eMeade LXD-55 AR-6\", Meade 6\" ED APO; Takahashi FCT-150; Intes Micro Alter M603; Questar 7”; Takahashi: Mewlon-180; Orion 180 Mak.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1523\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e8 3\/8” (213mm) to 8 5\/8” (219mm)\u003c\/p\u003e\n\u003cp\u003eCelestron: Starhopper 6\"\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1524\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e8 13\/16” (224mm) to 9 1\/16” (230mm)\u003c\/p\u003e\n\u003cp\u003eCelestron 8” and Meade 8” Schmidt-Cassegrain; Celestron: C8, C8+, Celestar 8, NexStar 8\/8i\/8SE, CPC800, CGE-800; Meade 8”: 2080, LX5, LX6, Premier, LX10, LX50, LXD-55, LXD-75, LX200, LX200R, LX200 GPS, LX90 GPS 8”; Discovery DHQ 6” Dob; Takahashi: Epsilon-180ED; Vixen: R200SS, VC200L, VMC200L, VMC260L\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1525\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e9 1\/8” (232mm) to 9 3\/8” (238mm)\u003c\/p\u003e\n\u003cp\u003eCelestron: C8 \/ Newt.; Newstar 8” Dobsonians; Orion: SkyQuest XT8, Atlas 8, SkyView Pro 8, Orion Sky Watcher\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1526\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e9 3\/8” (238mm) to 9 5\/8” (244mm)\u003c\/p\u003e\n\u003cp\u003eMeade Starfinder 8; Orion 8 DSE\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1527\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e9 5\/8” (244mm) to 9 7\/8” (251mm)\u003c\/p\u003e\n\u003cp\u003eMeade LXD-55 8\" S\/Newt, Meade 7” APO; Takahashi 212\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1528\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e10 1\/8” ( 257mm) to 10 3\/8” (264mm)\u003c\/p\u003e\n\u003cp\u003eCoulter 8\"; Skywatcher 8” Reflector; Takahashi Epsilon 180 ED\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1529\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e10 3\/8” (264mm) to 10 5\/8” (270mm)\u003c\/p\u003e\n\u003cp\u003eCelestron 9 1\/4 S-C, Celestron StarHopper 8\" Dobsonian\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1530\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e11 1\/8” (283mm) to 11 3\/8” (289mm)\u003c\/p\u003e\n\u003cp\u003eCelestron 10\" Newt; Orion SkyWatcher 10\"\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1531\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e11 5\/8” (295mm) to 11 7\/8” (302mm)\u003c\/p\u003e\n\u003cp\u003eFits all Meade 10\" Schmidt-Cassegrain’s: Meade 10\" LX200 Series, Meade LXD-55 10\" S\/ NEWT, Meade LX90 GPS 10”, Meade RCX 400 10”\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1532\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e12 1\/8” (308mm) to 12 3\/8” (314mm)\u003c\/p\u003e\n\u003cp\u003eCelestron: C11 SCT, StarHopper 10\" Dobsonian; Meade 10” Lightbridge Dobsonian; Orion: SkyQuest XT10, Atlas 10; OPT’s Starhunter 10” Dobsonian\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1533\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e12 5\/8” (321mm) to 12 7\/8” (327mm)\u003c\/p\u003e\n\u003cp\u003eMeade Starfinder 10; Coulter 10”; Takahashi: FRC300, Mewlon 300\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1534\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e13 3\/8” (340mm) to 13 5\/8” (346mm)\u003c\/p\u003e\n\u003cp\u003eMeade 12\" Schmidt-Cassegrain’s: LX200 Series 12”, LX90 GPS 12”, RCX 400 12”\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1535\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e14 7\/8” (378mm) to 15 1\/8” (384mm)\u003c\/p\u003e\n\u003cp\u003eOrion 12.5\"; 12” Dobs Zhumell\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1536\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e15 3\/8” (391mm) to 15 5\/8” (397mm)\u003c\/p\u003e\n\u003cp\u003eCelestron 14” SCT\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAZ-1537\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e15 5\/8” (397mm) to 15 7\/8” (403mm)\u003c\/p\u003e\n\u003cp\u003eMeade 14\" Schmidt-Cassegrain’s: 14” LX200 Series , RCX 400 14”\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"background-color: #ffffff; color: #23618b;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eAstrozap Full Aperture Solar Filter\u003c\/p\u003e\n\u003ch3\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp\u003eLimited One Year Warranty\u003c\/p\u003e","brand":"Astrozap","offers":[{"title":"391-397mm (AZ-1536)","offer_id":51317668773924,"sku":"sjv1787936872300","price":117.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/astrozap-full-aperture-solar-filter-391-397mm_1.jpg?v=1787936881"},{"product_id":"tele-vue-bandmate-nebustar-type-ii-filter","title":"Tele Vue Bandmate Nebustar Type II Filter","description":"\u003ch2\u003eTele Vue Bandmate Nebustar Type II Filter\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue Bandmate Nebustar Type II Filter is a unique narrowband design specifically for Tele Vue. It’s available in 1.25″ or 2″ mounted format. Unlike other UHC designs, Nebustar blocks red wavelengths normally passed by typical UHC filters. The design eliminates star bloat to produce sharper, more natural looking stars along with enhanced nebulosity. This is a great general-purpose nebula filter for scopes of any size. Astronomik is proud to deliver this exclusive filter through Tele Vue and wishes that customers “enjoy magnificent observing sessions with our most recent development for visual observers: The TeleVue Type 2 Nebustar.”\u003c\/p\u003e\n\u003ch4\u003eBackground\u003c\/h4\u003e\n\u003cp\u003eThe first thing you’ll notice is that these filters are produced for us in Germany by Astronomik. Tele Vue and Astronomik are two relatively small companies that adhere to the same philosophy. Do it better, or don’t do it at all; the products, customer, and night sky deserve it.\u003c\/p\u003e\n\u003cp\u003eDavid Nagler and Gerd Neumann had crossed paths at astronomy shows for years. Both have had their frustrations with the filter business. From passband to thread tolerances, the filter industry seems like the “wild west” of astronomical products. We had been looking to develop a long-term supplier of state-of-the-art, custom filters and approached Astronomik with the idea of reintroducing Tele Vue’s line of premium quality Bandmate filters; guaranteed to perform and fit, with uniformity beyond any competitive brand. Gerd and Eric of Astronomik were excited with the idea of a partnership with Tele Vue. “When we started into Amateur-Astronomy, Tele Vue already was a legendary brand known for its outstanding quality of their telescopes and eyepieces. Today we are proud to team up with them to share our knowledge and experience in filter design and production and bring the best filters possible to all astronomers worldwide.”\u003c\/p\u003e\n\u003cp\u003eThe distinction you’ll find with Bandmate filters is their consistency, achieved by keeping control of the manufacturing and quality control processes each company does so well. All the materials are sourced in Germany. Each filter is: optically tested by Tele Vue in high power-space to ensure no image degradation, tested by Astronomik on a spectrograph to ensure the coating meets design specifications, mechanically tested for fit, cosmetically inspected for pinholes, digs, and sleeks and serialized, all to insure customer satisfaction. All filters are backed with a 10-year warranty against manufacturing defects.\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cdiv class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--local_1 panel entry-content\" id=\"tab-local_1\" role=\"tabpanel\" aria-labelledby=\"tab-title-local_1\"\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eSize: 1.25″ mounted or 2″ mounted\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eIn the Box\u003c\/span\u003e\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--local_2 panel entry-content\" id=\"tab-local_2\" role=\"tabpanel\" aria-labelledby=\"tab-title-local_2\"\u003e\n\u003cp\u003e\u003cspan\u003eBandmate Nebustar Type II Filter\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFilter Case\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty \u003c\/h3\u003e\n\u003cp\u003eTele Vue 10-Years Warranty\u003c\/p\u003e\n\u003cp\u003eTele Vue Bandmate Filters Transmission Graph\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Tele Vue","offers":[{"title":"1.25\" mounted","offer_id":51317668970532,"sku":"ytg1787936878947","price":114.99,"currency_code":"USD","in_stock":true},{"title":"2\" mounted","offer_id":51317669003300,"sku":"bwm1787936878948","price":240.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/tele-vue-bandmate-nebustar-type-ii-filter_1.png?v=1787936889"},{"product_id":"tele-vue-bandmate-oiii-filter","title":"Tele Vue Bandmate OIII Filter","description":"\u003ch1\u003eTele Vue Bandmate OIII Filter\u003c\/h1\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe Tele Vue Bandmate OIII Filter passes light from doubly ionized oxygen atoms. As such, it is great for viewing planetary nebulae and supernovae remnants.It’s available in 1.25″ or 2″ mounted format.\u003c\/p\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003eBackground\u003c\/h4\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe first thing you’ll notice is that these filters are produced for us in Germany by Astronomik. Tele Vue and Astronomik are two relatively small companies that adhere to the same philosophy. Do it better, or don’t do it at all; the products, customer, and night sky deserve it.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eDavid Nagler and Gerd Neumann had crossed paths at astronomy shows for years. Both have had their frustrations with the filter business. From passband to thread tolerances, the filter industry seems like the “wild west” of astronomical products. We had been looking to develop a long-term supplier of state-of-the-art, custom filters and approached Astronomik with the idea of reintroducing Tele Vue’s line of premium quality Bandmate filters; guaranteed to perform and fit, with uniformity beyond any competitive brand. Gerd and Eric of Astronomik were excited with the idea of a partnership with Tele Vue. “When we started into Amateur-Astronomy, Tele Vue already was a legendary brand known for its outstanding quality of their telescopes and eyepieces. Today we are proud to team up with them to share our knowledge and experience in filter design and production and bring the best filters possible to all astronomers worldwide.”\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe distinction you’ll find with Bandmate filters is their consistency, achieved by keeping control of the manufacturing and quality control processes each company does so well. All the materials are sourced in Germany. Each filter is: optically tested by Tele Vue in high power-space to ensure no image degradation, tested by Astronomik on a spectrograph to ensure the coating meets design specifications, mechanically tested for fit, cosmetically inspected for pinholes, digs, and sleeks and serialized, all to insure customer satisfaction. All filters are backed with a 10-year warranty against manufacturing defects.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003cdiv aria-labelledby=\"tab-title-local_1\" role=\"tabpanel\" id=\"tab-local_1\" class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--local_1 panel entry-content\" data-mce-fragment=\"1\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan\u003eSize: 1.25″ mounted or 2″ mounted\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eIn the Box\u003c\/span\u003e\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv aria-labelledby=\"tab-title-local_2\" role=\"tabpanel\" id=\"tab-local_2\" class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--local_2 panel entry-content\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan\u003eBandmate OIII Filter\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFilter Case\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eManuals \u0026amp; Warranty \u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eTele Vue 10-Years Warranty\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eTele Vue Bandmate Filters Transmission Graph\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Tele Vue","offers":[{"title":"1.25\" mounted","offer_id":51317669298212,"sku":"rbi1787936884306","price":96.84,"currency_code":"USD","in_stock":true},{"title":"2\" mounted","offer_id":51317669330980,"sku":"yqd1787936884307","price":173.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/tele-vue-bandmate-oiii-filter_1.png?v=1787936893"},{"product_id":"idas-heuib-ii-h-alpha-enhanced-uvir-cut-filter","title":"IDAS HEUIB-II H-alpha Enhanced UV\/IR Cut Filter","description":"\u003ch2\u003eIDAS HEUIB-II H-alpha Enhanced UV\/IR Cut Filter\u003c\/h2\u003e\n\u003cdiv\u003eThe IDAS HEUIB-II (\u003cstrong\u003eH\u003c\/strong\u003e-α \u003cstrong\u003eE\u003c\/strong\u003enhanced \u003cstrong\u003eU\u003c\/strong\u003eV \u003cstrong\u003eI\u003c\/strong\u003eR \u003cstrong\u003eB\u003c\/strong\u003elocking) filter is designed for enhanced spectrum DSLR's and one-shot color CCD astronomical cameras.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eBesides removing the IR and UV ends of the spectrum which are often out of focus in refractive optics, it isolates the common H-alpha line relative to the surrounding extreme red end of the spectrum, making it easy to bring out the faint H-alpha emission nebulosity of astronomical photos, yet retain the background color balance of broadband photos. Some comparison shots taken with the enhanced Canon 6DH (standard Canon UV\/IR blocking filter vs. HEUIB-II filter) show a clear difference both in background sky color balance and contrast of H-alpha nebulosity in the extremely faint object IC1396. Note the good background color balance as shown in the histograms of the individual color channels of the HEUIB-II filtered image. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cimg style=\"float: none;\" height=\"252\" width=\"445\" src=\"https:\/\/www.sciencecenter.net\/hutech\/idas\/heuib-2\/heuib-ii-s.jpg?width=700\" alt=\"IDAS HEUIB-II filter bandpass plot\"\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003eThe HEUIB-II filter also returns normal daylight color balance to spectrum-enhanced cameras as can be seen in this photo at right taken with normal DSLR auto-white-balance (AWB).\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch4\u003eIDAS Filter Technology\u003c\/h4\u003e\n\u003cp\u003eA chain is only as good as its weakest link. This applies as well to an optical system such as a telescope\/filter\/imager system. With this in mind, IDAS filters are manufactured using unique technologies that result in quality that meets or exceeds that of the rest of your optical imaging system:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIGAD (Ion-Gun Assist Deposition)\u003c\/b\u003e This coating technology was originally developed for the optical communications field where long-term stability (\u0026gt;25 years) over harsh field conditions is required. IDAS is the first manufacturer to apply this technology to astronomical filters. This results in superior filters with robust coatings and long-term spectral stability even under temperature and humidity extremes. This stability is especially important for bandpass curves with steep slopes such as H-alpha, LPS filters, and other narrow bandpass filters. IGAD filters virtually eliminate bandpass shifts from the +\/-3 or 4nm typical of standard coating filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMBT (Multi Band-pass Technology)\u003c\/b\u003e This is technology originally developed for biomedical microscopes, but improved by IDAS by combining it the IGAD hard-coating technology described above. The excellent filter responses possible with this technology allows IDAS to create very complicated filters for astronomical use such as the unique LPS filter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eUFP (Ultra Fine Polish) Finishing\u003c\/b\u003e IDAS filters are polished twice as long as is typical for optical glass. In combination with the use of high-quality substrate glass, no scratches, bubbles, or other defects are visible even under microscopic inspection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eAdditional Features:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eIdeal precision prime focus T-Adapter for your astro imaging\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSCA Provides 360 deg. rubber square rings contact for the most secure and reliable adaption in your focuser\u003c\/li\u003e\n\u003cli\u003eSCA Brings your Camera to the Closest Optical Axis in the Drawtube\/Visual back for BEST Imaging Result\u003c\/li\u003e\n\u003cli\u003eSCA Eliminates Drawtube\/Visual Back Slop\u003c\/li\u003e\n\u003cli\u003eSCA Eliminates unstable locking from thumbscrew or unified compression ring\u003c\/li\u003e\n\u003cli\u003eSCA Accepts the Imperfection of a Drawtube\/Visual Back\u003c\/li\u003e\n\u003cli\u003eShort SCA Profile Prevents Oscillation\u003c\/li\u003e\n\u003cli\u003eSCA Damps Vibration\u003c\/li\u003e\n\u003cli\u003eSCA Accepts Filter Thread device.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specification\u003cbr\u003e\n\u003c\/h3\u003e\n\u003ctable border=\"0\" cellspacing=\"0\"\u003e\n\u003ccolgroup width=\"174\"\u003e\u003c\/colgroup\u003e \u003ccolgroup width=\"199\"\u003e\u003c\/colgroup\u003e \u003ccolgroup width=\"464\"\u003e\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\" align=\"center\" height=\"18\"\u003e\u003cb\u003e\u003cspan style=\"color: #000000;\"\u003eType\u003c\/span\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cb\u003e\u003cspan style=\"color: #000000;\"\u003eModel\u003c\/span\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cb\u003e\u003cspan style=\"color: #000000;\"\u003eUse \u0026amp; Thickness\u003c\/span\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\" align=\"center\" height=\"33\"\u003e\u003cspan style=\"color: #000000;\"\u003eM48\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003eHEUIB-II 48S \u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003eM48mm P0.75mm, substrate thickness 2.5mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\" align=\"center\" height=\"33\"\u003e\u003cspan style=\"color: #000000;\"\u003eM48\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003eHEUIB-II 48ST2 \u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003eM48mm P0.75mm, substrate thickness 2.0mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\" align=\"center\" height=\"33\"\u003e\u003cspan style=\"color: #000000;\"\u003eM52\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003eHEUIB-II 52ST2 \u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003eM52mm P0.75mm, substrate thickness 2.0mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\" align=\"center\" height=\"18\"\u003e\u003cspan style=\"color: #000000;\"\u003eDi2\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003eHEUIB-II Di2 \u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003edrops in AD19.4 drop-in mount adapter\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\" align=\"center\" height=\"33\"\u003e\u003cspan style=\"color: #000000;\"\u003eZF\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003eHEUIB-II DRE \u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003efor use with ZWO cams (fb 6.5mm) and also IDAS AD19.4 drop-in filter mount\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\" align=\"center\" height=\"62\"\u003e\u003cspan style=\"color: #000000;\"\u003eDRE\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003eHEUIB-II ZF \u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003efor Canon EF-EOSR drop-in mount adapter \u0026amp; Meike MK-EFTR-C (EF-R) \u0026amp; MK-EFTE-C (EF-E) drop-in mount adapters - Details at: IDAS DRE Filter\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eIdas HEUIB-II Filter at selected size :\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eM48 S\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eM48 ST2\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eM52\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDi2\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eZF\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eDRE\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eIDAS 3-Year Warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"IDAS","offers":[{"title":"48mm (2 mm thickness)","offer_id":51317669363748,"sku":"ijg1787936890655","price":127.48,"currency_code":"USD","in_stock":true},{"title":"52mm (2 mm thickness)","offer_id":51317669396516,"sku":"qbp1787936890656","price":124.11,"currency_code":"USD","in_stock":true},{"title":"Di2 drop in filter","offer_id":51317669429284,"sku":"nte1787936890657","price":122.11,"currency_code":"USD","in_stock":true},{"title":"DRT for EF-EOSR","offer_id":51317669462052,"sku":"lak1787936890658","price":163.0,"currency_code":"USD","in_stock":true},{"title":"ZF for ZWO Cameras","offer_id":51317669494820,"sku":"wnu1787936890659","price":106.23,"currency_code":"USD","in_stock":true},{"title":"DZ for use with ZWO cams","offer_id":51317669527588,"sku":"zqf1787936890660","price":139.51,"currency_code":"USD","in_stock":true},{"title":"DS for use with IDAS AD42-DS","offer_id":51317669560356,"sku":"nms1787936890661","price":128.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/idas-heuib-ii-h-alpha-enhanced-uvir-cut-filter_1.webp?v=1787936900"},{"product_id":"celestron-light-pollution-filter-rasa-8-93614","title":"Celestron Light Pollution Filter RASA 8\" (93614)","description":"\u003ch2 class=\"heading h2 pdp-product-title\"\u003eCelestron Light Pollution Filter RASA 8\"\u003c\/h2\u003e\n\u003cp\u003eLight pollution in the night sky can significantly degrade contrast in astronomical images. This is especially true when using very fast telescopes like the 8” RASA because the sky background saturates very quickly. The “noise” of the light pollution overwhelms the “signal” from the celestial object you are imaging, making it difficult to get the most detailed image. The Light Pollution Imaging Filter for the 8” RASA remedies this by blocking light pollution while transmitting light from deep-sky objects. The result is bright, detailed objects that pop off the black sky background with superior contrast.\u003cbr\u003e\u003cbr\u003eFortunately, many sources of light pollution have relatively discreet emission spectra; they emit primarily at specific wavelengths of light. By strategically blocking these wavelengths, the filter greatly reduces the effects of light pollution without degrading overall image quality.\u003cbr\u003e\u003cbr\u003eThe Light Pollution Imaging (LPI) Filter for the 8” RASA blocks light from some of the most common sources of light pollution between 400-700nm (i.e., the visible spectrum), including high- and low-pressure sodium-vapor streetlights, mercury-vapor streetlights, and natural airglow caused by oxygen in the atmosphere. Unlike some light pollution filters, the LPI filter blocks only specific areas of the spectrum instead of wide regions. This helps to maintain image brightness and color balance. In addition, specific wavelengths associated with emission nebulae, such as H-α(656nm), H-β (486nm), OIII (496nm and 501nm), and SII (672nm), are highly transmitted, ensuring minimal loss of image brightness for those objects.\u003cbr\u003e\u003cbr\u003eThe filter fits directly into the internal filter mount in the RASA 8’s front lens cell, where the optical window normally mounts. By removing the clear window and replacing it with the filter, optical performance for the entire system is maintained.\u003cbr\u003e\u003cbr\u003eEach filter comes with a plastic storage case to safely store the filter or the placeholder glass that came with your RASA when not in use. You will also receive a spectral transmission graph unique to your specific unit, verifying its performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAdditional Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEnhance your 8” Rowe-Ackermann Schmidt Astrograph (RASA) by blocking light pollution, improving image contrast, and darkening the sky background.\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/li\u003e\n\u003cli\u003eThis filter selectively blocks wavelengths of light from sources of light pollution, such as streetlights, not broad regions of the spectrum.\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/li\u003e\n\u003cli\u003eDoes not block wavelengths associated with emission nebulae, keeping your nebula images bright and detailed.\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/li\u003e\n\u003cli\u003eFits into the 8” RASA’s integrated filter mount, maintaining peak optical performance.\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/li\u003e\n\u003cli\u003eOptically flat surfaces free of defects, constructed of Schott glass with anti-reflection coatings.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"box-sizing: inherit; border-collapse: collapse; border-spacing: 0px; text-align: left; width: 1200px; color: #333e48; font-family: 'Open Sans', Arial, Helvetica, sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" id=\"product-specs-list\" class=\"table-open\"\u003e\n\u003ctbody style=\"box-sizing: inherit;\" id=\"spec-block-1\"\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eMaterial:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003eSchott B270\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eGlass thickness:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003e1.9mm (0.07\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eFilter diameter:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003e46mm (1.81\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eClear aperture:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003e43mm (1.69\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eCoatings:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003eDichroic, multi-layer anti-reflection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 0px;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eHousing:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003eAluminum, black anodized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eCelestron Light Pollution Filter RASA 8\"\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e2-Year Warranty\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":51317669593124,"sku":"uar1787936891013","price":217.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/celestron-light-pollution-filter-rasa-8-93614_1.webp?v=1787936900"},{"product_id":"idas-nb1-nebula-booster-filter-h-alpha-h-beta-oiii","title":"IDAS NB1 Nebula Booster Filter H-alpha, H-beta \u0026 OIII","description":"\u003ch2\u003eIDAS NB1 Nebula Booster Filter H-alpha, H-beta \u0026amp; OIII\u003c\/h2\u003e\nThe IDAS NB1 Nebula Booster Filter is a triple line-pass filter (H-alpha, H-beta \u0026amp; OIII) which can be used with one-shot color (OSC) cameras such as DSLR's or astronomical OSC cameras. Passing the red Hα+NII and the green-blue Hβ+OIII lines, the NB1 filter enhances the contrast of emission line nebulae without the time-consuming use of single-band filters. IDAS NB Filters are designed to enhance the contrast of emission nebula, yet accommodate the filter spectral shift*when used with modern fast optical systems. All interference filters are subject to a bandpass spectral shift which depends on the angle of incidence of the incoming light. IDAS NB filters are designed to accommodate the spectral shift of modern fast optical systems. When placed in front of an optical system, the spectral shift is determined by the focal length of the optics and the size of the imaging sensor. For an APS-C sensor, up to a 50mm focal length can be accommodated. For a full-frame sized sensor, up to an 80mm focal length can be used. For filters placed between the optical system and imaging sensor, the situation is more complex. IDAS NB filters are designed with modern fast optics in mind and can accommodate an angle of incidence of up to 14°.\n\u003ch4\u003e\u003c\/h4\u003e\n\u003ch4\u003eFeatures\u003cbr\u003e\n\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eIdeal flat-top and moderate bandpass\u003c\/li\u003e\n\u003cli\u003eExcellent in-band transmission\u003c\/li\u003e\n\u003cli\u003eExtremely steep bandpass edges minimize internal reflections\u003c\/li\u003e\n\u003cli\u003eNear IR (NIR) is blocked up to 1100nm\u003c\/li\u003e\n\u003cli\u003eAvailable in 52mm and 48mm sizes\u003c\/li\u003e\n\u003cli\u003e2.5mm thickness (parfocal with other IDAS LPS filters)\u003c\/li\u003e\n\u003cli\u003eIDAS-proprietary IGAD\/MBT\/UFPquality\u003c\/li\u003e\n\u003cli\u003eMade in Japan\u003c\/li\u003e\n\u003c\/ul\u003e\nMore on other members of the NB filter family...\n\u003ctable cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003eEmission Lines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003eNB1\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003eTriple - Hβ+OIII, Hα\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003eNB2\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003eDual - OIII, Hα\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003eNB3\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003eDual - OIII, SII\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch4\u003eIDAS Filter Technology\u003c\/h4\u003e\nA chain is only as good as its weakest link. This applies as well to an optical system such as a telescope\/filter\/imager system. With this in mind, IDAS filters are manufactured using unique technologies that result in quality that meets or exceeds that of the rest of your optical imaging system:\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIGAD (Ion-Gun Assist Deposition)\u003c\/b\u003e This coating technology was originally developed for the optical communications field where long-term stability (\u0026gt;25 years) over harsh field conditions is required.IDAS is the first manufacturer to apply this technology to astronomical filters. This results in superior filters with robust coatings and long-term spectral stability even under temperature and humidity extremes. This stability is especially important for bandpass curves with steep slopes such as H-alpha, LPS filters, and other narrow bandpass filters. IGAD filters virtually eliminate bandpass shifts from the +\/-3 or 4nm typical of standard coating filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMBT (Multi Band-pass Technology)\u003c\/b\u003e This is technology originally developed for biomedical microscopes, but improved by IDAS by combining it the IGAD hard-coating technology described above. The excellent filter responses possible with this technology allows IDAS to create very complicated filters for astronomical use such as the unique LPS filter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eUFP (Ultra Fine Polish) Finishing\u003c\/b\u003e IDAS filters are polished twice as long as is typical for optical glass. In combination with the use of high-quality substrate glass, no scratches, bubbles, or other defects are visible even under microscopic inspection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003ch3\u003eIn the Box\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eNB1 Filter\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eIDAS 3-Year Warranty\u003c\/p\u003e","brand":"IDAS","offers":[{"title":"48mm mounted (2mm thickness)","offer_id":51317670051876,"sku":"ghb1787936890721","price":120.39,"currency_code":"USD","in_stock":true},{"title":"ZWO Cameras","offer_id":51317670084644,"sku":"rvp1787936890722","price":116.85,"currency_code":"USD","in_stock":true},{"title":"DS for use with IDAS AD42-DSS","offer_id":51317670117412,"sku":"vlj1787936890723","price":152.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/idas-nb1-nebula-booster-filter-h-alpha-h-beta-oiii_1.webp?v=1787936901"},{"product_id":"daystar-uvir-cut-2-dsiuv2","title":"Daystar UV\/IR Cut 2\" (DSIUV2)","description":"\u003ch2\u003eDaystar UV\/IR Cut 2\"\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe Daystar UV\/IR Cut 2″ reduces the heat load on your filter assembly by absorbing or reflecting UV and\/or I light and transmitting light in the desired visual spectrum. \u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"page\" title=\"Page 1\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"layoutArea\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"column\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eTo prevent damage, we recommend using an Energy Rejection Filter on telescopes of 80mm aperture or more, or when tracking the Sun for long periods. This can be a UV\/IR cut filter mounted before the diagonal, or a full aperture red or yellow glass ERF mounted in front of the telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWhen to use a Front Mounted ERF\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eTelescopes upon which we do not recommend UV\/IR cut filters:\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSome larger aperture (130mm and higher) and\/or all-day tracking applications where the Quark \/ Quantum are susceptible to overheating.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSCT telescopes\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ePetzval refractors (a concentrated beam will fall upon unknown coatings)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eCertain older oil spaced triplets prior to adoption of UV resistant oils.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eAny instrument for which the owner is not comfortable with the UV\/IR cut solution.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThese users should consider front mount energy rejection.  This is accomplished using a colored glass optical window before the objective or corrector plate.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eA refractor with an aperture of 80mm or less doesn’t require energy rejection.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThis is because the amount of energy collected with 80mm of light just isn’t enough to do damage to your system. 80mm is the size of the palm of your hand.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eYour hand doesn’t spontaneously ignite in the sun – and it’s not transparent like your refractor’s objective is.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAll of your lenses are transparent and do not absorb energy.  A diagonal and the front elements of the QUARK are \u0026gt;99% reflective and doesn’t either.  All of that energy is reflected back out the front of your telescope unmagnified.  Unless your telescope is made of paper, then it is not at-risk for damage with an aperture of 80mm or less.\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan\u003eThread: M48x0.75 (2″)\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan\u003e2″ UV\/IR Cut Filter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan\u003eFilter Box\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eDaystar 1-Years Warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cbr\u003e","brand":"Daystar","offers":[{"title":"Default Title","offer_id":51317670150180,"sku":"esz1787936893785","price":80.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/daystar-uvir-cut-2-dsiuv2_1.jpg?v=1787936903"},{"product_id":"astronomik-cls-filter","title":"Astronomik CLS Filter","description":"\u003ch2\u003eAstronomik CLS Filter\u003c\/h2\u003e\n\u003cp\u003eThe Astronomik CLS Filter is a budget filter for visual observation, Black \u0026amp; White photography and CCD photographs of nebulae, galaxies and star clusters with astronomical instruments of any size. The Astronomik CLS Filter blocks the light of the spectral lines of mercury and sodium-vapor lamps and lets the largest part of the visible light and H-alpha emissions pass. All the important emission lines, as well as the spectral region that the very well dark adapted eye can see, can pass through the filter.\u003c\/p\u003e\n\u003ch3\u003eMain use\u003c\/h3\u003e\n\u003cp\u003eThe filters are optimized for use with aperture ratios from 1:3 to 1:15. Transmission losses and chromatic distortions, which are problems with other filters, only appear with Astronomik filters when extremely bright aperture ratios of 1:2 and more are used. The CLS filter is suitable for use with telescopes of all aperture sizes.\u003c\/p\u003e\n\u003ch3\u003eSuitability\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVisual observation (dark skies): Good, to reduce light pollution by mercury-vapour lamps (streetlight)\u003c\/li\u003e\n\u003cli\u003eVisual observation (urban skies): Good, an UHC-E or UHC filter is more suitable\u003c\/li\u003e\n\u003cli\u003eFilm photography: Very good, colour balance is near perfect\u003c\/li\u003e\n\u003cli\u003eCCD photography: Good, when used with an additional IR-block-filter\u003c\/li\u003e\n\u003cli\u003eDSLR photography (original): Good, colour balance shifted but contrast enhanced\u003c\/li\u003e\n\u003cli\u003eDSLR photography (astro modified): Very good, colour balance is near perfect\u003c\/li\u003e\n\u003cli\u003eDSLR photography (MC modified): Good, when used with an additional IR-block-filter\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Planets): Unsuitable\u003c\/li\u003e\n\u003cli\u003eWebcam \/ Video (Deep Sky): Very good, if light pollution is a big problem\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe table gives you a short Overview about the suitability of our filters for various applications: \u003cstrong\u003eLegend\u003c\/strong\u003e ++ The filter is excellent for this application, the dramatic better image! + The filter is good for this application, the much better image! o The filter is suitable for this application, the slightly better image! - The filter is usable for this application. -- The filter is not suitable for this application. \u003c\/p\u003e\n\u003cdiv class=\"basic ui-accordion selected\" id=\"list1b\"\u003e\n\u003ch3\u003eHow to Read the Chart\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003cb\u003ehorizontal axis\u003c\/b\u003e is the \u003cb\u003eWavelength in Nanometers\u003c\/b\u003e (nm). 400nm is deep blue, at 520nm the human eye senses green and at 600nm red. At 656nm is the famous \"H-Alpha\" emission line of hydrogen.\u003c\/li\u003e\n\u003cli\u003eThe \u003cb\u003etransmission in %\u003c\/b\u003e is plotted on the \u003cb\u003evertical axis\u003c\/b\u003e.\u003c\/li\u003e\n\u003cli\u003eThe \u003cspan style=\"color: red;\"\u003ered\u003c\/span\u003e line shows the \u003cb\u003etransmission of the filter\u003c\/b\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVisual filters\u003c\/b\u003e: The \u003cb\u003egrey\u003c\/b\u003e line in the background shows the relative sensitivity of the human eye at night. The maximum is at ~510nm and drops to longer and shorter wavelengths. You can easily see, that you can´t see anything of the H-alpha line at night (even if you can during daylight!) The sensitivity at 656nm is 0% at night!\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePhotographic filters\u003c\/b\u003e: The grey line in the background shows the sensitivity of a typical CCD sensor.\u003c\/li\u003e\n\u003cli\u003eThe most important \u003cb\u003eartifical emission\u003c\/b\u003e lines are shown in \u003cspan style=\"color: orange;\"\u003eorange\u003c\/span\u003e. The artifical light pollution is dominated by see mercury (Hg) and sodium (Na), which are used in nearly all streetlights.\u003c\/li\u003e\n\u003cli\u003eThe most important \u003cb\u003eemission lines from nebulas\u003c\/b\u003e are shown in \u003cspan style=\"color: green;\"\u003egreen\u003c\/span\u003e. The most important lines are from ionized Hydrogen (H-alpha and H-beta) and double ionized oyxgen (OIII).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan style=\"color: orange;\"\u003eThe major emission lines of artifical light pollution: | Hg 435,8nm | Hg 546,1nm | Hg 577,0nm | Hg 578,1nm | | Na 589,0nm | Na 589,6nm | Na 615,4nm | Na 616,1nm | \u003c\/span\u003e \u003cspan style=\"color: green;\"\u003eThe major emission lines of nebulas: H-β 486,1nm | OIII 495,9nm | OIII 500,7nm | H-α 656,3nm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch3\u003eQuality Characteristics of Astronomik Filters\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Substrate: \u003c\/strong\u003eAstronomik filters consist of a precision polished substrate on which the actual filter, in the form of very thin (dichroic) interference layers, is applied. Because of these high quality measures Astronomik filters will in no way reduce the performance of your optical system. And contrary to common experience with other manufacturers´ filters, with Astronomik filters stars remain fine needle points of light!\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating: \u003c\/strong\u003eAstronomik filters consist of up to 130 layers deposited on top of the completely transparent carrier glass. These layers work as the actual filter and as an antireflective coating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability: \u003c\/strong\u003eAstronomik filters are completely scratch resistant, and not sensitive to moisture, dew, or high humidity. With others’ filters, after a few years, you start to notice their filter is no longer up to its full capability. Not so with Astronomik filters which maintain their ‘brand new’ transmission specifications year after year. \u003cstrong\u003eAnd, because of Astronomik’s extraordinarily resistant coating technology, our filters come with a 10year warranty.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAstronomik filters are highquality accessories for visual observing which will significantly expand your observing opportunities. After many years of use your Astronomik filters will be an accessory which will be ready to give you the same joy you experienced many years earlier when they were new. Now that’s an investment worth making!\u003c\/p\u003e\n\u003ch4\u003eCompatible Canon EOS R APS-C cameras\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"text-align: center;\"\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R7\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 23px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R10\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 23px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R50\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 23px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R50 V\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 23px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon EOS R100\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/c5\/79\/36\/1775813946\/Haken.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 23px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eNon-compatible Canon lenses\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"text-align: center;\"\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon RF 14mm f\/1.4 L VCM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 18px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon RF 28mm F2.8 STM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 18px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon RF 35mm F1.8 IS Macro STM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 18px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon RF 85mm F1.2L USM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 18px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon Extender RF 2x\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 18px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left;\"\u003eCanon Extender RF 1.4x\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/www.astronomik.com\/media\/9e\/75\/05\/1775813946\/Kreuz.svg?ts=1775813946\u0026amp;width=700\" style=\"width: 18px; height: 18px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eAstronomik filters are diffraction-limited, ensuring that the optical performance (resolution and contrast) of your telescope is not compromised. Thanks to the high-precision machining of the glas substrate, all Astronomik filters are parfocal. The wedge errors are far below all common tolerances. Therefore, all issues concerning focal distances and the exact alignment of images from each color channel are effectively eliminated.\u003c\/p\u003e\n\u003cp\u003eAll Astronomik filters are ideal for modern cameras, including both CMOS- and CCD-based models, ensuring you capture the best possible images with your equipment. Sharpness, contrast, and the absence of any reflections and halos are guaranteed. Even with bright stars in the field of view, nebulae and galaxies will be captured with the finest structures. The Astronomik MFR and MaxFR coatings are designed for optimal performance across a wide range of focal ratios of the optics used.\u003c\/p\u003e\n\u003cp\u003eEvery Astronomik filter undergoes a rigorous quality control process before delivery.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e92% transmission at 486nm (H-beta)\u003c\/li\u003e\n\u003cli\u003e92% transmission at 496nm (OIII)\u003c\/li\u003e\n\u003cli\u003e92% transmission at 501nm (OIII)\u003c\/li\u003e\n\u003cli\u003e97% transmission at 656nm (H-alpha)\u003c\/li\u003e\n\u003cli\u003eTransmission range: 450 to 540nm and above 650nm\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm (except Astronomik OWB Type 3 and XT filters)\u003c\/li\u003e\n\u003cli\u003eFinely polished optical glass, free of any striae, residual stresses, and bubbles\u003c\/li\u003e\n\u003cli\u003eExtremely scratch-resistant and durable coating\u003c\/li\u003e\n\u003cli\u003eCompletely resistant against high humidity and aging effects\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eDiffraction-limited\u003c\/li\u003e\n\u003cli\u003eOptimized spectral windows\u003c\/li\u003e\n\u003cli\u003eDelivered in a high-quality, long-lasting filter box\u003c\/li\u003e\n\u003cli\u003eMade in Germany\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eCLS filter, at selected size. \u003c\/p\u003e\n\u003ch3 class=\"tab__content tab.box tab__content--active\" data-content=\"tab-3\" aria-labelledby=\"tab-title-3\" aria-hidden=\"false\" role=\"tabpanel\"\u003e\n\u003cspan\u003eManual \u0026amp; Warranty\u003c\/span\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003eAstronomik\u003cspan\u003e \u003c\/span\u003e10 year warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25\"\/M28.5","offer_id":51317670182948,"sku":"pzc1787936894696","price":52.29,"currency_code":"USD","in_stock":true},{"title":"2\"\/M48","offer_id":51317670215716,"sku":"iaf1787936894697","price":101.39,"currency_code":"USD","in_stock":true},{"title":"31mm Round","offer_id":51317670248484,"sku":"mzx1787936894698","price":77.07,"currency_code":"USD","in_stock":true},{"title":"36mm Round","offer_id":51317670281252,"sku":"gsz1787936894699","price":79.61,"currency_code":"USD","in_stock":true},{"title":"50mm Round","offer_id":51317670314020,"sku":"gvi1787936894700","price":99.73,"currency_code":"USD","in_stock":true},{"title":"50 mm Square","offer_id":51317670346788,"sku":"iww1787936894701","price":128.15,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS APS-C","offer_id":51317670379556,"sku":"oih1787936894702","price":94.12,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS-R","offer_id":51317670412324,"sku":"rmz1787936894703","price":94.54,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS M","offer_id":51317670445092,"sku":"rot1787936894704","price":101.07,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS XL","offer_id":51317670477860,"sku":"hwp1787936894705","price":112.85,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter EOS R XL","offer_id":51317670510628,"sku":"hzl1787936894706","price":127.3,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon XL","offer_id":51317670543396,"sku":"ltr1787936894707","price":117.5,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Nikon Z XL","offer_id":51317670576164,"sku":"riz1787936894708","price":127.3,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Pentax K-1","offer_id":51317670608932,"sku":"qhn1787936894709","price":117.5,"currency_code":"USD","in_stock":true},{"title":"Clip-Filter Sony alpha 7","offer_id":51317670641700,"sku":"rpa1787936894710","price":133.17,"currency_code":"USD","in_stock":true},{"title":"M49","offer_id":51317670674468,"sku":"zsx1787936894711","price":128.72,"currency_code":"USD","in_stock":true},{"title":"M52","offer_id":51317670707236,"sku":"djh1787936894712","price":143.01,"currency_code":"USD","in_stock":true},{"title":"M55","offer_id":51317670740004,"sku":"spc1787936894713","price":240.3,"currency_code":"USD","in_stock":true},{"title":"M58","offer_id":51317670772772,"sku":"gci1787936894714","price":239.43,"currency_code":"USD","in_stock":true},{"title":"M62","offer_id":51317670805540,"sku":"cdv1787936894715","price":257.57,"currency_code":"USD","in_stock":true},{"title":"M67","offer_id":51317670838308,"sku":"jat1787936894716","price":291.09,"currency_code":"USD","in_stock":true},{"title":"M72","offer_id":51317670871076,"sku":"zsz1787936894717","price":302.58,"currency_code":"USD","in_stock":true},{"title":"M77","offer_id":51317670903844,"sku":"nbk1787936894718","price":256.62,"currency_code":"USD","in_stock":true},{"title":"SC Rear Cell 2\"x24TPI","offer_id":51317670936612,"sku":"tzs1787936894719","price":115.15,"currency_code":"USD","in_stock":true},{"title":"T-Mount\/M42x0.75","offer_id":51317670969380,"sku":"tfz1787936894720","price":93.89,"currency_code":"USD","in_stock":true},{"title":"XT Clip-Filter EOS APS-C","offer_id":51317671002148,"sku":"dkk1787936894721","price":110.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/astronomik-cls-filter_1.jpg?v=1787936906"},{"product_id":"zwo-lrgb-filters","title":"ZWO LRGB Filters","description":"\u003ch1\u003eZWO LRGB Filters\u003c\/h1\u003e\n\u003cp\u003eThe new ZWO LRGB Filters  are designed to approximately equalize the flux of mono sensors.\u003c\/p\u003e\n\u003cp\u003eThe LRGB filters have a better transmission, better coatings and  better color separation.\u003c\/p\u003e\n\u003cp\u003eThe RGB color combine weights will be approximately 1:1:1. Available in 1.25″ \u0026amp; 2″ round mounted sizes as well as 31mm \u0026amp; 36mm round unmounted sizes.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFine-optically polished to ensure accurate 1\/4 wavefront\u003c\/li\u003e\n\u003cli\u003eMore than 92% transmission at passband\u003c\/li\u003e\n\u003cli\u003eInfrared wavelength 700-1100nm cut-off\u003c\/li\u003e\n\u003cli\u003ePrecision off-band blocking\u003c\/li\u003e\n\u003cli\u003eMulti-layers anti-reflection coating\u003c\/li\u003e\n\u003cli\u003eSmall spectral “gap” to minimize effect of light pollution\u003c\/li\u003e\n\u003cli\u003eMore parfocal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.25″ Round Mounted\n\u003cp\u003e31mm Round Unmounted\u003c\/p\u003e\n\u003cp\u003e36mm Round Unmounted\u003c\/p\u003e\n\u003cp\u003e2″ Round Mounted\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.9mm (for 1.25″ filter)\n\u003cp\u003e2mm (for 31mm \u0026amp; 36m filters)\u003c\/p\u003e\n\u003cp\u003e1.85mm (for 2″ filter)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFilters LRGB\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eZWO 2-Years Warranty\u003c\/p\u003e\n\u003cp\u003eZWO General Product \u0026amp; Software Manuals\u003c\/p\u003e\n\u003cp\u003eZWO LRGB Filters Optimized Curves\u003c\/p\u003e\n\u003cp\u003eZWO LRGB Filters 2″ Mechanical Drawing\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"1.25\" Mounted","offer_id":51317671034916,"sku":"szg1787936897804","price":109.2,"currency_code":"USD","in_stock":true},{"title":"36mm Unmounted","offer_id":51317671067684,"sku":"wdm1787936897805","price":127.02,"currency_code":"USD","in_stock":true},{"title":"2\" Mounted","offer_id":51317671100452,"sku":"kyi1787936897806","price":218.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/zwo-lrgb-filters_1.png?v=1787936907"},{"product_id":"zwo-7nm-narrowband-sho-filters-ha-oiii-sii","title":"ZWO 7nm Narrowband SHO Filters (Ha, OIII \u0026 SII)","description":"\u003ch2\u003eZWO 7nm SHO Narrowband Filters (Ha, OIII \u0026amp; SII)\u003c\/h2\u003e\n\u003cp\u003eThe ZWO SHO Narrowband Filter Set contains one H-alpha, one OIII and one SII filter. Use it for tricolor CCD astrophotography. Available in 1.25″ \u0026amp; 2″ round mounted sizes as well as 31mm \u0026amp; 36mm round unmounted sizes.\u003c\/p\u003e\n\u003cp\u003eThe ZWO H-alpha 7nm Narrowband Filter has a bandpass of  7nm and passes light at 656nm  wavelength, light transmission rate comes up to 90%. Best choice of narrowband H-alpha astrophotography filter for high-contrast imaging and revealing rich details of the nebula even in areas with strong light pollution, just prepare to experience the infinite fun with it!\u003c\/p\u003e\n\u003cp\u003eThe ZWO OIII 7nm Narrowband Filter is designed for nebula observation allowing the 7nm bandwidth of light centered on a wavelength of 500nm through,  which corresponds to OIII emission lines, blocking out all other light.  Adding the ZWO O-III Narrowband filter to your imaging collection will help you go beyond the RGB imaging and will help capture your favorite nebulas in a totally new light, no matter how polluted your skies may be!\u003c\/p\u003e\n\u003cp\u003eThe ZWO SII 7nm Narrowband Filter passes light at 672nm wavelength with a bandpass of 7nm which is designed for nebula observation. It is suitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants, use it with H-alpha and OIII narrowband filters (SHO Set) for tricolor CCD astrophotography.\u003c\/p\u003e\n\u003cp\u003eNarrowband filter does not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula.\u003c\/p\u003e\n\u003cp\u003eIt can reduce the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/0b7561e863701da396bce2092bc696ec.webp?v=1752870758\u0026amp;width=700\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch4\u003eNew vs Old Filters\u003c\/h4\u003e\n\u003cp\u003eNew Ha filter is based on the new base glass, less reflection( less halo of bright stars).\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eWe made a test of our Ha Filters (ASI1600 mono camera, single frame, 300s, DDP in MaximDL) :\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/0c2508e6ce1e835958f976b9e417026a.webp?v=1752870720\u0026amp;width=700\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eNew OIII filter is based on the same base glass, new coating standard, better block rate of off-band.\u003c\/p\u003e\n\u003cp\u003eNew SII filter is based on the new base glass, less reflection( less halo of bright stars).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFWHM\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7±0.5nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.25″ Round Mounted\n\u003cp\u003e31mm Round Unmounted\u003c\/p\u003e\n\u003cp\u003e36mm Round Unmounted\u003c\/p\u003e\n\u003cp\u003e2″ Round Mounted\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGlass Thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.0+\/-0.03 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePolishing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\/4 wavefront over the both surfaces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmission\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAbout 90% at SII line 672nm\n\u003cp\u003e\u0026lt;0.1% transmission of off-band, OD3(Optical Density)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIR-Cut\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e700-1100nm cut-off\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eFilter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCase\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eZWO 2-Years Warranty\u003c\/p\u003e\n\u003cp\u003eZWO General Product \u0026amp; Software Manuals\u003c\/p\u003e\n\u003cp\u003eZWO Narrowband Filters Transmission Curves\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Filter Set (SHO) \/ 1.25\" Mounted","offer_id":51317671133220,"sku":"eol1787936902960","price":239.12,"currency_code":"USD","in_stock":true},{"title":"Filter Set (SHO) \/ 31mm Unmounted","offer_id":51317671165988,"sku":"rtc1787936902961","price":311.78,"currency_code":"USD","in_stock":true},{"title":"Filter Set (SHO) \/ 36mm Unmounted","offer_id":51317671198756,"sku":"trw1787936902962","price":334.59,"currency_code":"USD","in_stock":true},{"title":"Filter Set (SHO) \/ 2\" Mounted","offer_id":51317671231524,"sku":"gqg1787936902963","price":565.99,"currency_code":"USD","in_stock":true},{"title":"Oxygen III \/ 1.25\" Mounted","offer_id":51317671264292,"sku":"roc1787936902964","price":82.4,"currency_code":"USD","in_stock":true},{"title":"Oxygen III \/ 31mm Unmounted","offer_id":51317671297060,"sku":"teh1787936902965","price":106.21,"currency_code":"USD","in_stock":true},{"title":"Oxygen III \/ 36mm Unmounted","offer_id":51317671329828,"sku":"sie1787936902966","price":116.46,"currency_code":"USD","in_stock":true},{"title":"Oxygen III \/ 2\" Mounted","offer_id":51317671362596,"sku":"mfu1787936902967","price":161.41,"currency_code":"USD","in_stock":true},{"title":"H-Alpha \/ 1.25\" Mounted","offer_id":51317671395364,"sku":"pms1787936902968","price":87.64,"currency_code":"USD","in_stock":true},{"title":"H-Alpha \/ 31mm Unmounted","offer_id":51317671428132,"sku":"nyu1787936902969","price":96.82,"currency_code":"USD","in_stock":true},{"title":"H-Alpha \/ 36mm Unmounted","offer_id":51317671460900,"sku":"xvr1787936902970","price":109.61,"currency_code":"USD","in_stock":true},{"title":"H-Alpha \/ 2\" Mounted","offer_id":51317671493668,"sku":"cie1787936902971","price":201.77,"currency_code":"USD","in_stock":true},{"title":"Sulfur II \/ 1.25\" Mounted","offer_id":51317671526436,"sku":"dit1787936902972","price":92.87,"currency_code":"USD","in_stock":true},{"title":"Sulfur II \/ 31mm Unmounted","offer_id":51317671559204,"sku":"ykj1787936902973","price":109.2,"currency_code":"USD","in_stock":true},{"title":"Sulfur II \/ 36mm Unmounted","offer_id":51317671591972,"sku":"gks1787936902974","price":104.47,"currency_code":"USD","in_stock":true},{"title":"Sulfur II \/ 2\" Mounted","offer_id":51317671624740,"sku":"pjs1787936902975","price":194.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/zwo-7nm-narrowband-sho-filters-ha-oiii-sii_1.jpg?v=1787936913"},{"product_id":"zwo-duo-band-filter","title":"ZWO Duo-Band Filter","description":"\u003ch2\u003eZWO Duo-Band Filter\u003c\/h2\u003e\n\u003cp\u003eThe ZWO Duo-Band Filter is a dual narrowband filter primarily aimed at complementing our range of colour ASI cameras. The Duo-Band filter is aimed at the astronomer who may already own a One Shot Colour (OSC) camera and wants to image using narrowband techniques or emission objects without purchasing a mono camera, filter wheel and narrowband filter set.\u003c\/p\u003e\n\u003cp\u003eThe Duo-Band filter offers an economical entry into the world of narrowband imaging and can also offer a practical solution to imaging in light polluted urban areas.\u003c\/p\u003e\n\u003cp\u003eThe dual band pass nature of the Duo-Band filter passes light at Hα (656nm) and OIII (500nm) wavelength, and can reduce the interference from natural light sources such as moonlight, or artificial light pollution such as street lighting.\u003c\/p\u003e\n\u003cp\u003eIt can help improve the contrast and visibility of deep sky objects such as emission nebula using a OSC camera.\u003c\/p\u003e\n\u003cp\u003eIf you are looking for a solution to deep sky photography in light pollution area, then ZWO Duo-Band Filter will be a great choice.\u003c\/p\u003e\n\u003cp\u003eThe Duo-Band filter can be used with all ASI cameras and EFW Electronic Filter Wheel and comes in 1.25” and 2” sizes.\u003c\/p\u003e\n\u003ch4\u003eFeatures\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eAerometal material. Precise CNC machining;\u003c\/li\u003e\n\u003cli\u003eFine sandblasting process and anodized finish;\u003c\/li\u003e\n\u003cli\u003eExtinction treatment to prevent reflection;\u003c\/li\u003e\n\u003cli\u003eLaser engraving font that will never fade;\u003c\/li\u003e\n\u003cli\u003ePrecise double-sided optical coating;\u003c\/li\u003e\n\u003cli\u003eFine-optically polished to ensure accurate 1\/4 wavefront and \u0026lt;30 seconds parallelism over the both surfaces;\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eKindly Reminder\u003c\/h4\u003e\n\u003cp\u003eThe incoming light transmitted through the filter should be perpendicular to the filter, or the incident angle should be less than 8°. Therefore, this product is not suitable for wide-angle or ultra wide-angle lenses.\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e  \u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFWHM\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15nm (H-alpha)\n\u003cp\u003e35nm (OIII)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.25″ Round Mounted\n\u003cp\u003e2″ Round Mounted\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGlass Thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.85\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurface Quality\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e60\/40 (Refer to MIL-O-13830)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmission\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMore than 90% transmission at major OIII line 486.nm1, 496nm and 501nm.\n\u003cp\u003eMore than 80% transmission at Ha line 656.3nm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSchott substrate material\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eFilter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCase\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eZWO 2-Years Warranty\u003c\/p\u003e\n\u003cp\u003eZWO General Product \u0026amp; Software Manuals\u003c\/p\u003e\n\u003cp\u003eZWO Duo-Band Filter Transmission Curve\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"1.25\" Round Mounted","offer_id":51317671657508,"sku":"ktv1787936905833","price":70.31,"currency_code":"USD","in_stock":true},{"title":"2\" Round Mounted","offer_id":51317671690276,"sku":"fbx1787936905834","price":122.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/zwo-duo-band-filter_1.png?v=1787936914"},{"product_id":"zwo-uvir-cut-filter","title":"ZWO UV\/IR Cut Filter","description":"\u003ch2\u003eZWO UV\/IR Cut Filter\u003c\/h2\u003e\n\u003cp\u003eThe ZWO UV\/IR Cut Filter  filter is suitable for color camera with AR protect window. It’s available in 1.25″ or 2″ round mounted sizes.\u003c\/p\u003e\n\u003cp\u003eThe ZWO UV\/IR Cut Filter blocks infrared light from reaching the sensor of your CCD or CMOS camera or your expensive H-alpha filter. When imaging, the addition of this simple and inexpensive accessory will result in sharper images, and when doing solar work, the IR Cut Filter will your protect H-alpha filter from the damaging effects of infrared radiation.\u003c\/p\u003e\n\u003cp\u003eInfrared or IR light is invisible to the human eye, and so even though most telescopes are not designed to focus IR light, it does not matter when you are using your telescope visually. However, when you add a camera to the mix, its a whole other story! Unlike the human eye, a silicon sensor is very sensitive to light in the infrared portion of the spectrum, and that is a problem because infrared images are blurry as all get out. That means your nice, sharp visual light image is degraded by the addition of the infrared layer. This problem can easily be solved by blocking the infrared, and this filter will do just that.\u003c\/p\u003e\n\u003cp\u003eThe ZWO UV\/IR Cut Filter filter is housed in a 1.25” cell, and has internal threads so that you can stack filters together. The filter comes with a protective plastic case.\u003c\/p\u003e\n\u003cp\u003eThickness: 1.85 mm\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.25″ Round Mounted\n\u003cp\u003e2″ Round Mounted\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFilter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eZWO 2-Years Warranty\u003c\/p\u003e\n\u003cp\u003eZWO General Product \u0026amp; Software Manuals\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"1.25\" Mounted","offer_id":51317671723044,"sku":"jll1787936905929","price":18.5,"currency_code":"USD","in_stock":true},{"title":"2\" Mounted","offer_id":51317671755812,"sku":"bcu1787936905930","price":39.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/zwo-uvir-cut-filter_1.webp?v=1787936915"},{"product_id":"zwo-ir-850nm-pass-filter-125-850ir125","title":"ZWO IR 850nm Pass Filter 1.25\" (850IR125)","description":"\u003ch2\u003eZWO IR 850nm Pass Filter 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe ZWO IR 850nm Pass Filter 1.25″ suitable for IR sensitive cameras. The transmission properties of the IR 850nm Pass Filter are optimized for CCD \u0026amp; CMOS astrophotography. You don’t need to debayer and get the full resolution of this sensor when use it with a Color camera such like ASI224MC or ASI185MC. Because the QE responce  of sensor beyond 850nm  is all the same. So you can use a color camera as mono camera with this filter, just don’t forget to keep the WB_R and WB_B to 50 (no White Balance applied).\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.25″ Round Mounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.9-2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFilter\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eZWO 2-Years Warranty\u003c\/p\u003e\n\u003cp\u003eZWO General Product \u0026amp; Software Manuals\u003c\/p\u003e\n\u003cp\u003eZWO IR 850nm Pass Filter Transmission Curve\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":51317671788580,"sku":"xws1787936909548","price":17.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/zwo-ir-850nm-pass-filter-125-850ir125_1.jpg?v=1787936919"},{"product_id":"zwo-methane-ch4-filter-125-ch4","title":"ZWO Methane CH4 Filter 1.25\" (CH4)","description":"\u003ch2\u003eZWO Methane CH4 Filter 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe ZWO Methane CH4 Filter 1.25″ is a special filter for photographic use.\u003c\/p\u003e\n\u003cp\u003eIts FWHM is 20 nm which is suitable for most IR sensitive color or mono cameras.It can reveal the detail of the target and not too dark.\u003c\/p\u003e\n\u003cp\u003eIt is recommended  for planetary imaging such like Jupiter, Saturn and the other planets.\u003c\/p\u003e\n\u003cp\u003eThis filter is a 1.25″(31.7mm) filter and comes with an inner filter thread . It is protected in a plastic case.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.25″ Round Mounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTBD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCH4 Filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eZWO 2-Years Warranty\u003c\/p\u003e\n\u003cp\u003eZWO General Product \u0026amp; Software Manuals\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":51317671821348,"sku":"xqv1787936914427","price":60.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/zwo-methane-ch4-filter-125-ch4_1.jpg?v=1787936923"},{"product_id":"zwo-ar-protective-window-for-asi","title":"ZWO AR Protective Window for ASI","description":"\u003ch2\u003eZWO AR Protective Window for ASI\u003c\/h2\u003e\n\u003ch4\u003eZWO D21 AR protect window\u003c\/h4\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eTechnical Parameter:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eDiameter: 21mm\u003c\/p\u003e\n\u003cp\u003eType: AR window\u003c\/p\u003e\n\u003cp\u003eThickness: 1.1mm\u003c\/p\u003e\n\u003cp\u003eFlatness: 1\/4 λ\u003c\/p\u003e\n\u003cp\u003eProtect the sensor from dust and humidity.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMatch Model：\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe cameras that come with the D21*1.1mm AR protictive window as list as below :\u003c\/p\u003e\n\u003cp\u003eASI120MM-S, ASI224MC, ASI385MC, ASI290MC\/MM, ASI290MINI, ASI178MM, ASI462MC, ASI120MINI.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eZWO D25 AR protect window\u003c\/h4\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eTechnical Parameter:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eDiameter: 25mm\u003c\/p\u003e\n\u003cp\u003eType: AR window\u003c\/p\u003e\n\u003cp\u003eThickness: 1.1mm\u003c\/p\u003e\n\u003cp\u003eFlatness: 1\/4 λ\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMatch Model：\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eASI174 series.\u003c\/p\u003e\n\u003cp\u003eProtect the sensor from dust and humidity.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eZWO D32 AR protect window\u003c\/h4\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eTechnical Parameter:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eDiameter: 32mm\u003c\/p\u003e\n\u003cp\u003eType: AR window\u003c\/p\u003e\n\u003cp\u003eThickness: 2mm\u003c\/p\u003e\n\u003cp\u003eFlatness: 1\/4 λ\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMatch Model：\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eASI1600 series, ASI294 series, ASI183 series.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eZWO D60 AR protect window\u003c\/h4\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eTechnical Parameter:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eDiameter: 60mm\u003c\/p\u003e\n\u003cp\u003eType: AR window\u003c\/p\u003e\n\u003cp\u003eThickness: 2mm\u003c\/p\u003e\n\u003cp\u003eFlatness: 1\/4 λ\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMatch Model：\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eASI071 MC Pro，ASI6200MM Pro， ASI2600MM Pro.\u003c\/p\u003e\n\u003ch2\u003eUV IR-CUT Protective Window\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/f8fc754efe2799ca917eee21d7350efd.webp?v=1752870455\u0026amp;width=700\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/8b31dcef5493bd69e48bfc953d4ee19d.webp?v=1752870455\u0026amp;width=700\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch4\u003eZWO D21 UV IR-CUT protect window\u003c\/h4\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eTechnical Parameter:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eDiameter: 21mm\u003c\/p\u003e\n\u003cp\u003eType: UV IR-cut window\u003c\/p\u003e\n\u003cp\u003eThickness: 1.1mm\u003c\/p\u003e\n\u003cp\u003eFlatness: 1\/4 λ\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMatch Model：\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eASI120 series, ASI120-S series, ASI178 series, ASI290 series, ASI224MC series, ASI385 series, ASI185MC series.\u003c\/p\u003e\n\u003cp\u003eProtect the sensor from dust and humidity.\u003c\/p\u003e\n\u003cp\u003eThe cameras that come with the D21*1.1mm IR protictive window as list as below :\u003c\/p\u003e\n\u003cp\u003eASI120MC-S, ASI178MC.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eZWO D25 UV IR-CUT protect window\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/426474105bc9afcb1261044235a281b3-1.webp?v=1752870570\u0026amp;width=700\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/5875bb92023c162b4c80286c9a1773b2-1.webp?v=1752870570\u0026amp;width=700\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eTechnical Parameter:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eDiameter: 25mm\u003c\/p\u003e\n\u003cp\u003eType: UV IR-cut window\u003c\/p\u003e\n\u003cp\u003eThickness: 1.1mm\u003c\/p\u003e\n\u003cp\u003eFlatness: 1\/4 λ\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMatch Model：\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eIt is used for ASI174MM ASI174MC ASI174MM-COOL ASI174MC-COOL to protect the sensor from dust and humidity.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eZWO D60 UV IR-CUT protect window\u003c\/h4\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eTechnical Parameter:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eDiameter: 60mm\u003c\/p\u003e\n\u003cp\u003eType: UV IR-cut window\u003c\/p\u003e\n\u003cp\u003eThickness: 2mm\u003c\/p\u003e\n\u003cp\u003eFlatness: 1\/4 λ\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMatch Model：\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eIt is used for ASI6200MC Pro, ASI2400MC Pro, ASI2600MC Pro to protect the sensor from dust and humidity.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eProtective Window\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eZWO 2-Years Warranty\u003c\/p\u003e\n\u003cp\u003eZWO General Product \u0026amp; Software Manuals\u003c\/p\u003e\n\u003cp\u003eZWO AR Protective Window for ASI Transmission Curve\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"AR D21 Window","offer_id":51317671886884,"sku":"sbh1787936914449","price":11.65,"currency_code":"USD","in_stock":true},{"title":"AR D25 Window","offer_id":51317671919652,"sku":"smn1787936914450","price":11.65,"currency_code":"USD","in_stock":true},{"title":"AR D32 Window","offer_id":51317671952420,"sku":"pox1787936914451","price":21.39,"currency_code":"USD","in_stock":true},{"title":"AR D60 Window","offer_id":51317671985188,"sku":"czm1787936914452","price":31.41,"currency_code":"USD","in_stock":true},{"title":"UV\/IR Cut D21 Window","offer_id":51317672017956,"sku":"lec1787936914453","price":11.46,"currency_code":"USD","in_stock":true},{"title":"UV\/IR Cut D25 Window","offer_id":51317672050724,"sku":"nyt1787936914454","price":13.9,"currency_code":"USD","in_stock":true},{"title":"UV\/IR Cut D60 Window","offer_id":51317672083492,"sku":"bhh1787936914455","price":40.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/zwo-ar-protective-window-for-asi_1.jpg?v=1787936923"},{"product_id":"celestron-125-variable-polarizing-filter-94107","title":"Celestron 1.25\" Variable Polarizing Filter (94107)","description":"\u003ch2\u003eCelestron 1.25\" Variable Polarizing Filter\u003c\/h2\u003e\n\u003cp\u003eWhen you want to selectively reduce the brightness of celestial objects for a customized view, the Variable Polarizing Filter is the perfect choice. Unlike regular Moon Filters and Neutral Density Filters, the level of brightness can be reduced to just 1% or as much as 40%. To make the adjustment, simply rotate the filter’s lower ring and the image gets brighter or dimmer.\u003cbr\u003e\u003cbr\u003eThis filter does not alter the color of the object you’re observing, making it a great choice for astroimaging, especially when imaging the surface of the Moon. By reducing the brightness, lunar details become more pronounced and defined. This filter can also be used to darken the blue-sky background when hunting for planets like Venus or Jupiter in the daylight, making the planet stand out from the background.\u003cbr\u003e\u003cbr\u003eThe Variable Polarizing filter threads onto any Celestron 1.25” eyepiece. Lastly, the filter can be threaded on both sides so you can stack it with other filters, such as color or neutral density, if needed.\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"box-sizing: inherit; border-collapse: collapse; border-spacing: 0px; text-align: left; width: 1200px; color: #333e48; font-family: 'Open Sans', Arial, Helvetica, sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" id=\"product-specs-list\" class=\"table-open\"\u003e\n\u003ctbody style=\"box-sizing: inherit;\" id=\"spec-block-1\"\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eSize diameter:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003e31.75mm (1.25\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eCell Housing:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003eAluminum cell housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eStackable Filter:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eLight Transmission:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003eAdjustable for large and small telescopes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eDimensions Filter only:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003e31.4mm x 22.4mm (1.23\" x .88\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eDimensions Case only:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003e68mm x 28mm (2.67\" x 1.1\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eDimensions Packaging:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003e72mm x 71mm x 33mm (2.83\" x 2.8\" x 1.3\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eWeight Filter only:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003e0.56 oz (16 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eWeight Case only:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003e0.91 oz (26 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 0px;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eTotal Package Weight:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003e1.7 oz (50 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCelestron 1.25\" Variable Polarizing Filter\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e2-Year Warranty\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":51317672149028,"sku":"svl1787936916835","price":32.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/celestron-125-variable-polarizing-filter-94107_1.webp?v=1787936926"},{"product_id":"celestron-125-neutral-density-moon-filter-94105","title":"Celestron 1.25\" Neutral Density Moon Filter (94105)","description":"\u003ch2\u003eCelestron 1.25\" Neutral Density Moon Filter\u003c\/h2\u003e\n\u003cp\u003eThe Celestron Neutral Density Moon Filter attaches to a 1.25” eyepiece to lower the amount of light entering the eyepiece by 87%.  The Moon is one of the most viewed objects in the sky, but you shouldn’t be deprived of its features due to brightness.  This filter only allows 13% of the telescope’s light to reach the eyepiece, making it a lot more comfortable to view.   Unlike color filters, the Neutral Density Moon filter affects all colors of the visible spectrum evenly, darkening the image without shifting the color.   Some Moon filters are #58 Green filters, and while they work well for cutting glare, they also add an unnatural green cast to the Moon’s surface.  The Neutral Density Moon filter gives a true color image.\u003c\/p\u003e\n\u003cp\u003eThis filter is also great for helping to cut glare and increase contrast when viewing bright planets like Venus or Jupiter, or even to dim bright stars when splitting close double stars. The filter is glass with an aluminum cell that attaches to 1.25” eyepieces and is threaded on both sides so it can be stacked with color filters.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReduces brightness and cuts glare, increasing clarity of the Moon, Venus, and bright double stars\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e13% light transmission\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eProvides a true color image\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThreads on to any Celestron 1.25” eyepiece\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable class=\"table-open\" id=\"product-specs-list\" style=\"box-sizing: inherit; border-collapse: collapse; border-spacing: 0px; text-align: left; width: 1200px; color: #333e48; font-family: 'Open Sans', Arial, Helvetica, sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\n\u003ctbody id=\"spec-block-1\" style=\"box-sizing: inherit;\"\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eSize diameter:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003e31.75mm (1.25\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eCell Housing:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003eAluminum cell housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eStackable Filter:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eLight Transmission:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003e13%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eDimensions Filter only:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003e31mm x 11.5mm (1.22\" x .45\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eDimensions Case only:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003e54.5mm x 43mm x 18mm (2.14\" x 1.7\" x .7\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eDimensions Packaging:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003e60mm x 50mm x 23mm (2.36\" x 2\" x .9\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eWeight Filter only:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003e0.21 oz (6 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 1px solid #e4e8ea;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eWeight Case only:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003e0.5 oz (14 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: inherit; border-bottom: 0px;\"\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px; width: 300px; font-weight: bold;\"\u003eTotal Package Weight:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: inherit; padding: 13px; font-size: 14px; height: 43px;\"\u003e0.88 oz (25 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCelestron 1.25\" Neutral Density Moon Filter\u003c\/li\u003e\n\u003cli\u003eFilter Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e2-Year Warranty\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":51317672181796,"sku":"adh1787936918468","price":15.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/celestron-125-neutral-density-moon-filter-94105_1.webp?v=1787936927"},{"product_id":"antares-125-filter-neutral-density-25-nd25","title":"Antares 1.25\" Filter Neutral Density 25% (ND25)","description":"\u003ch3\u003eAntares Filter Neutral Density 25%\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv aria-expanded=\"true\" role=\"tabpanel\" class=\"tab-pane fade active in\" id=\"description\"\u003e\n\u003cdiv class=\"product-description\"\u003e\n\u003cdiv class=\"tab-pane fade in active\" id=\"description\" role=\"tabpanel\"\u003e\n\u003cdiv class=\"product-description\"\u003eNeutral density filters can reduce brightness across the visual spectrum without losing resolution, enhancing lunar-planetary observing. Can be used stacked with color filters. The ND25 transmits 25% and threads into all 1.25\" accessories.\u003c\/div\u003e\n\u003cdiv class=\"product-description\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"product-description\"\u003e\u003cstrong\u003eNOT FOR SOLAR VIEWING.\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"product-description\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003e\u003c\/h3\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\nAntares Filter Neutral Density 25% \u003cbr\u003e\n\u003cdiv class=\"woocommerce-product-details__short-description\"\u003e\n\u003cbr\u003e\n\u003cdiv data-mce-fragment=\"1\" class=\"value\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAntares 1-Year Warranty\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Antares","offers":[{"title":"Default Title","offer_id":51317676146724,"sku":"soh1787937204912","price":12.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/antares-125-filter-neutral-density-25-nd25_1.png?v=1787937213"},{"product_id":"antlia-h-beta-and-oiii-filter-125","title":"Antlia H-beta and OIII Filter 1.25″","description":"\u003ch2 data-mce-fragment=\"1\"\u003eAntlia H-beta and OIII Filter – 1.25″\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAntlia HB-OIII filter is engineered specifically for night visual nebulae observation at a high contrast and Deep-sky astrophotography. Its transmission is 90% or greater at critical wavelengths (OIII 500.7nm, OIII 495.9nm, and H-Beta 486.1nm). You’ll notice much higher contrast boost to observe Planetary Nebula, Supernova Remnant, Emission Nebula, Diffuse Nebula, and extremely faint nebulae by Antlia HB-OIII filter.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWhen it is used for Astro Deep-sky imaging, it enhances the details of the OIII and H-Beta emission lines with astronomical cameras and DSLRs.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eMain Application and Performance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAntlia HB-OIII filter was coated with almost total suppression of optical density (OD)4 on unwanted wavelength and the filter cut-off wavelength is 300-1000nm, which meets the spectral requirements of photographic cameras and further enhances the suppression of the IR region, compared with the visual filters with a cut-off depth of OD3@350-750nm, it performs better to darken the sky background and make deep-sky observation and photography of nebulae, star clusters, and galaxies more easily.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe HB-OIII filter helps faint objects become much more visible against the blackened background and produces near-photographic views of the Veil, Dumbbell, and Orion nebula, among many other objects under both light-polluted and dark skies.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSince human eyes are less sensitive at night, large aperture telescopes are recommended to gather light and funnel it into the observer’s eyes.\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable cellspacing=\"0\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"185\" valign=\"top\"\u003e\u003c\/td\u003e\n\u003ctd width=\"174\" valign=\"top\"\u003eOxygen III\u003c\/td\u003e\n\u003ctd width=\"168\" valign=\"top\"\u003eOxygen III\u003c\/td\u003e\n\u003ctd width=\"168\" valign=\"top\"\u003eH-Beta\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"185\" valign=\"top\"\u003eCWL (Central Wavelength)\u003c\/td\u003e\n\u003ctd width=\"174\" valign=\"top\"\u003e500.7nm\u003c\/td\u003e\n\u003ctd width=\"168\" valign=\"top\"\u003e495.9nm\u003c\/td\u003e\n\u003ctd width=\"168\" valign=\"top\"\u003e486.1nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"185\" valign=\"top\"\u003ePeak Transmission\u003c\/td\u003e\n\u003ctd width=\"174\" valign=\"top\"\u003e＞90%\u003c\/td\u003e\n\u003ctd width=\"168\" valign=\"top\"\u003e＞90%\u003c\/td\u003e\n\u003ctd width=\"168\" valign=\"top\"\u003e＞90%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"185\" valign=\"top\"\u003eBlocking\u003c\/td\u003e\n\u003ctd width=\"509\" valign=\"top\" colspan=\"3\"\u003eOD4@ 300-1000nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"185\" valign=\"top\"\u003eFilter Thickness\u003c\/td\u003e\n\u003ctd width=\"509\" valign=\"top\" colspan=\"3\"\u003e2mm+\/-0.05mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"185\" valign=\"top\"\u003eBasic Substrate\u003c\/td\u003e\n\u003ctd width=\"509\" valign=\"top\" colspan=\"3\"\u003eOptical, Single, Non-glued substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"185\" valign=\"top\"\u003eSurface Quality\u003c\/td\u003e\n\u003ctd width=\"509\" valign=\"top\" colspan=\"3\"\u003eS\/D (scratch\/dig)= 60\/40 (Refer to MIL-O-13830)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"185\" valign=\"top\"\u003eTransmitted Wavefront\u003c\/td\u003e\n\u003ctd width=\"509\" valign=\"top\" colspan=\"3\"\u003eLambda\/4 or better\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"185\" valign=\"top\"\u003eParallelism\u003c\/td\u003e\n\u003ctd width=\"509\" valign=\"top\" colspan=\"3\"\u003eless than 30 arcsec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eFilter\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"value\" data-mce-fragment=\"1\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAntlia 3-Years Warranty Against Delamination\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Antlia","offers":[{"title":"Default Title","offer_id":51317676572708,"sku":"wvd1787937226724","price":67.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/antlia-h-beta-and-oiii-filter-125_1.webp?v=1787937235"},{"product_id":"antlia-sho-45nm-narrowband-edge-filters-sho-edge","title":"Antlia SHO 4.5nm Narrowband EDGE Filters (SHO-EDGE)","description":"\u003ch2 data-mce-fragment=\"1\"\u003eAntlia SHO 4.5nm Narrowband EDGE Filters\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAntlia SHO EDGE narrowband filter optimizes the FWHM (full width half maximum) to 4.5nm bandpass. The suppression of optical density (OD)5 on unwanted wavelengths and the excellent transmittance characteristics found in the Antlia 3nm Pro series has been incorporated into the 4.5nm EDGE narrowband filters. The result is that these filters deliver superior SNR (signal to noise ratio) and better contrast in your images.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAntlia 4.5nm EGDE filters are designed to deliver high transmittance that provides you with the maximum signal to reveal the faintest of nebulae structures.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eConventional broader narrowband filters cause a heavy loss in transmission due to the strong Center Wavelength (CWL)-shift. We guarantee T\u0026gt;90% within 1nm range of the center bandwidth, which means that the SHO 4.5nm EDGE narrowband filters can guarantee high transmittance for working with both long focal ratios and fast optical systems. Blue-shift data shows that Antlia 4.5nm EDGE filters can be used with nearly all systems as fast as f\/3 with minimal loss in emission signal and meets the requirements of fast optics.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eApplication and Performance:\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eHigh transmittance and narrow bandwidth to maximize contrast\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSteep spectral profile minimizes halos around bright stars\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eA single substrate to eliminate internal reflections\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eNarrowband Objects: Emission Nebulae, Planetary, Wolf Rayet Nebulae and Supernova Remnants\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eUse in light polluted areas and dark sites\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eExtends imaging time when the moon is up\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAntlia narrowband EDGE filters can be used down to f\/3 systems with minimal loss of signal\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAll Antlia unmounted filters are edge blackened to eliminate internal reflections from stray light\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSuperior optical reliability reduces post image processing\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThis filter is only effective for deep sky objects that contain H-alpha, SII, OIII emissions\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cem data-mce-fragment=\"1\"\u003eSII Specifications:\u003c\/em\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eBasic Substrate:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eOptical, Single \/ Non-glued substrate\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eFilter Thickness:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e2mm+\/-0.05mm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eFWHM (Full width at half maximum):\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e4.5nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eCWL (Central Wavelength):\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e671.6nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003ePeak Transmission:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e＞90%\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eBlocking:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u0026gt; 5 OD(0.001% out of band blocking) @ 300-1000nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eSurface Quality:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eS\/D (scratch\/dig)= 60\/40 (Refer to MIL-O-13830)\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eTransmitted Wavefront:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eLambda\/4 or better.\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cstrong data-mce-fragment=\"1\"\u003eParallelism:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eless than 30 arcsec\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg class=\"jz-image-viewer__img urst-none wh-auto ht-auto lazyloaded\" src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAghoqZkQYozeKEwgIwwgo4gAY.jpg\" alt=\"\" width=\"519\" height=\"296\" data-v-b1f4dd62=\"\" data-ll-status=\"loaded\" data-mce-fragment=\"1\" data-mce-src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAghoqZkQYozeKEwgIwwgo4gAY.jpg?width=700\"\u003e\u003c\/p\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003e\n\u003cem data-mce-fragment=\"1\"\u003e\u003c\/em\u003e\u003cbr\u003e\n\u003c\/h4\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cem data-mce-fragment=\"1\"\u003eH-Alpha Specifications:\u003c\/em\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eBasic Substrate:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eOptical, Single \/ Non-glued substrate\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eFilter Thickness:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e2mm+\/-0.05mm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eFWHM (Full width at half maximum):\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e4.5nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eCWL (Central Wavelength):\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e656.3nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003ePeak Transmission:\u003c\/strong\u003e＞90%\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cstrong data-mce-fragment=\"1\"\u003eBlocking:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u0026gt; 5 OD (out of band blocking) @ 300-1000nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eSurface Quality:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eS\/D (scratch\/dig)= 60\/40 (Refer to MIL-O-13830)\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eTransmitted Wavefront:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eLambda\/4 or better.\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cstrong data-mce-fragment=\"1\"\u003eParallelism:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eless than 30 arcsec\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg class=\"need_fix lazyloaded\" src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAgo5SZkQYonP3zmgYwwQo4gQY.jpg\" alt=\"Antlia H-alpha 4.5nm EDGE curve.jpg\" width=\"567\" height=\"324\" data-ll-status=\"loaded\" data-mce-fragment=\"1\" data-mce-src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAgo5SZkQYonP3zmgYwwQo4gQY.jpg?width=700\"\u003e\u003c\/p\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003e\n\u003cem data-mce-fragment=\"1\"\u003e\u003c\/em\u003e\u003cbr\u003e\n\u003c\/h4\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cem data-mce-fragment=\"1\"\u003eOIII Specifications:\u003c\/em\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eBasic Substrate:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eOptical, Single \/ Non-glued substrate\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eFilter Thickness:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e2mm+\/-0.05mm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eFWHM (Full width at half maximum):\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e4.5nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eCWL (Central Wavelength):\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e500.7nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003ePeak Transmission:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u0026gt;85%\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cstrong data-mce-fragment=\"1\"\u003eBlocking:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u0026gt; 5 OD(0.001% out of band blocking) @ 300-1000nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eSurface Quality:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eS\/D (scratch\/dig)= 60\/40 (Refer to MIL-O-13830)\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eTransmitted Wavefront:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eLambda\/4 or better. Parallelism: less than 30 arcsec\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg class=\"need_fix lazyloaded\" src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAg9ouZkQYogL624gMwvwo4gQY.jpg\" alt=\"Antlia OIII 4.5nm EDGE curve.jpg\" width=\"577\" height=\"330\" data-ll-status=\"loaded\" data-mce-fragment=\"1\" data-mce-src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAg9ouZkQYogL624gMwvwo4gQY.jpg?width=700\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eNot Recommended:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSolar imaging\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eNight visual observation\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eNot Permitted:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eDO NOT LOOK AT THE SUN WITH THIS FILTER\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSerious eye damage will result if you fail to observe the warning\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWhen we design filters for astronomy imaging systems, we look at how they will work together with optical systems, carefully designing the out of band blocking rate, transmittance and band-pass parameters to achieve an optimum result. Each filter is individually tested and scanned by strict QC to ensure that the quality meets the high-performance parameters. The result is that Antlia is known for designing filters for astrophotography that achieve exceptional quality and performance parameters at affordable prices. We believe the price to performance ratio compares more favorably than similar premium filters in the market.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eSelected Filters\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"value\" data-mce-fragment=\"1\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAntlia 3-Years Warranty Against Delamination\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e","brand":"Antlia","offers":[{"title":"1.25\" Round Mounted \/ SHO Filter Set","offer_id":51317676605476,"sku":"eya1787937220240","price":370.62,"currency_code":"USD","in_stock":true},{"title":"1.25\" Round Mounted \/ H-Alpha","offer_id":51317676638244,"sku":"vsz1787937220241","price":119.74,"currency_code":"USD","in_stock":true},{"title":"1.25\" Round Mounted \/ Sulfur II","offer_id":51317676671012,"sku":"ghy1787937220242","price":142.55,"currency_code":"USD","in_stock":true},{"title":"1.25\" Round Mounted \/ Oxygen III","offer_id":51317676703780,"sku":"ycz1787937220243","price":114.04,"currency_code":"USD","in_stock":true},{"title":"31mm Round Unmounted \/ SHO Filter Set","offer_id":51317676736548,"sku":"vnz1787937220244","price":365.01,"currency_code":"USD","in_stock":true},{"title":"31mm Round Unmounted \/ H-Alpha","offer_id":51317676769316,"sku":"kth1787937220245","price":143.61,"currency_code":"USD","in_stock":true},{"title":"31mm Round Unmounted \/ Sulfur II","offer_id":51317676802084,"sku":"bqe1787937220246","price":131.64,"currency_code":"USD","in_stock":true},{"title":"31mm Round Unmounted \/ Oxygen III","offer_id":51317676834852,"sku":"fus1787937220247","price":155.58,"currency_code":"USD","in_stock":true},{"title":"36mm Round Unmounted \/ SHO Filter Set","offer_id":51317676867620,"sku":"rbv1787937220248","price":449.53,"currency_code":"USD","in_stock":true},{"title":"36mm Round Unmounted \/ H-Alpha","offer_id":51317676900388,"sku":"dme1787937220249","price":184.42,"currency_code":"USD","in_stock":true},{"title":"36mm Round Unmounted \/ Sulfur II","offer_id":51317676933156,"sku":"wxy1787937220250","price":177.51,"currency_code":"USD","in_stock":true},{"title":"36mm Round Unmounted \/ Oxygen III","offer_id":51317676965924,"sku":"svj1787937220251","price":163.68,"currency_code":"USD","in_stock":true},{"title":"2\" Round Mounted \/ SHO Filter Set","offer_id":51317676998692,"sku":"fze1787937220252","price":686.11,"currency_code":"USD","in_stock":true},{"title":"2\" Round Mounted \/ H-Alpha","offer_id":51317677031460,"sku":"zjp1787937220253","price":231.68,"currency_code":"USD","in_stock":true},{"title":"2\" Round Mounted \/ Sulfur II","offer_id":51317677064228,"sku":"kak1787937220254","price":204.94,"currency_code":"USD","in_stock":true},{"title":"2\" Round Mounted \/ Oxygen III","offer_id":51317677096996,"sku":"dti1787937220255","price":213.85,"currency_code":"USD","in_stock":true},{"title":"50mm Round Unmounted \/ SHO Filter Set","offer_id":51317677129764,"sku":"amu1787937220256","price":732.7,"currency_code":"USD","in_stock":true},{"title":"50mm Round Unmounted \/ H-Alpha","offer_id":51317677162532,"sku":"myp1787937220257","price":287.34,"currency_code":"USD","in_stock":true},{"title":"50mm Round Unmounted \/ Sulfur II","offer_id":51317677195300,"sku":"qlf1787937220258","price":244.24,"currency_code":"USD","in_stock":true},{"title":"50mm Round Unmounted \/ Oxygen III","offer_id":51317677228068,"sku":"ert1787937220259","price":251.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/antlia-sho-45nm-narrowband-edge-filters-sho-edge_1.webp?v=1787937235"},{"product_id":"vespera-light-pollution-filter-ac023","title":"Vespera Light Pollution Filter (AC023)","description":"\u003ch1 data-mce-fragment=\"1\"\u003eVespera Light Pollution Filter\u003c\/h1\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe Vespera light pollution filter or CLS (City Light Suppression) filter allows you to improve the quality of your photos when observing in the city or suburbs. It attenuates the effects of light pollution and thus increases the contrast between the celestial object being photographed and the background sky.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe broadband filter blocks Na (sodium) and Hg (mercury) wavelengths mainly emitted by urban night lighting or undesirable natural light (atmospheric oxygen radiation, etc.), while allowing the main wavelengths from celestial objects.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe anti-light pollution filter is particularly useful for improving the brightness of deep sky objects: nebulae, star clusters, galaxies, etc. It is especially effective on emission nebulae because of the filtered wavelengths.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eExamples of emission nebulae: Bubble (NGC 7635), Crescent (NGC 6888), Eagle (M16), Elephant’s Trunk (IC 1396), Flame (NGC 2024), Lagoon (M8), North America (NGC 7000), Omega (M17), Orion (M42), Pacman (NGC 281), Rosette (NGC 2237), Tarantula (NGC 2070), Thor’s Helmet (NGC 2359), Trifid (M20), Tulip (Sh2-101).\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eDesigned specifically for the Vespera lens, it fits easily and discreetly into the optical arm. The lens ring that holds the CLS filter is equipped with an electronic card that allows Vespera to detect it.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe filter is delivered in a transparent storage box.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong\u003eTransmission curve\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg height=\"300\" width=\"777\" src=\"https:\/\/vaonis.com\/wp-content\/uploads\/2022\/07\/Courbe-filtre-cls.png?width=700\" alt=\"Vespera light pollution filter transmission curve\" data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"box-sizing: border-box; border-spacing: 0px; border-collapse: collapse; max-width: 100%; background-color: transparent; margin-bottom: 1.618em; width: 1170px; border-width: 1px 0px 0px; border-image: initial; color: #131523; font-family: Montserrat; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; border-color: rgba(0, 0, 0, 0.1) initial initial initial; border-style: dotted initial initial initial;\" class=\"woocommerce-product-attributes shop_attributes\"\u003e\n\u003ctbody style=\"box-sizing: border-box;\"\u003e\n\u003ctr style=\"box-sizing: border-box; background-color: #f7f7f7;\" class=\"woocommerce-product-attributes-item woocommerce-product-attributes-item--attribute_pa_colors\"\u003e\n\u003cth style=\"box-sizing: border-box; padding: 8px; text-align: left; width: 150px; font-weight: bold; border-top: 0px; border-bottom: 1px dotted rgba(0, 0, 0, 0.1); margin: 0px; line-height: 1.5;\" class=\"woocommerce-product-attributes-item__label\"\u003eColors\u003c\/th\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 8px; font-style: italic; border-top: 0px; border-bottom: 1px dotted rgba(0, 0, 0, 0.1); margin: 0px; line-height: 1.5;\" class=\"woocommerce-product-attributes-item__value\"\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px; padding: 8px 0px;\"\u003eBlack (exterior)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: border-box; background-color: #fdfdfd;\" class=\"woocommerce-product-attributes-item woocommerce-product-attributes-item--attribute_pa_net-weight\"\u003e\n\u003cth style=\"box-sizing: border-box; padding: 8px; text-align: left; width: 150px; font-weight: bold; border-top: 0px; border-bottom: 1px dotted rgba(0, 0, 0, 0.1); margin: 0px; line-height: 1.5; background: rgba(0, 0, 0, 0.024);\" class=\"woocommerce-product-attributes-item__label\"\u003eNet weight\u003c\/th\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 8px; font-style: italic; border-top: 0px; border-bottom: 1px dotted rgba(0, 0, 0, 0.1); margin: 0px; line-height: 1.5; background: rgba(0, 0, 0, 0.024);\" class=\"woocommerce-product-attributes-item__value\"\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px; padding: 8px 0px;\"\u003e15 g (0.53 oz)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: border-box; background-color: #f7f7f7;\" class=\"woocommerce-product-attributes-item woocommerce-product-attributes-item--attribute_pa_net-dimensions\"\u003e\n\u003cth style=\"box-sizing: border-box; padding: 8px; text-align: left; width: 150px; font-weight: bold; border-top: 0px; border-bottom: 1px dotted rgba(0, 0, 0, 0.1); margin: 0px; line-height: 1.5;\" class=\"woocommerce-product-attributes-item__label\"\u003eNet Dimensions\u003c\/th\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 8px; font-style: italic; border-top: 0px; border-bottom: 1px dotted rgba(0, 0, 0, 0.1); margin: 0px; line-height: 1.5;\" class=\"woocommerce-product-attributes-item__value\"\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px; padding: 8px 0px;\"\u003eThickness: 0,6 cm (0.24 in), Width: 7,80 cm (3.07 in)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: border-box; background-color: #fdfdfd;\" class=\"woocommerce-product-attributes-item woocommerce-product-attributes-item--attribute_pa_materials\"\u003e\n\u003cth style=\"box-sizing: border-box; padding: 8px; text-align: left; width: 150px; font-weight: bold; border-top: 0px; border-bottom: 1px dotted rgba(0, 0, 0, 0.1); margin: 0px; line-height: 1.5; background: rgba(0, 0, 0, 0.024);\" class=\"woocommerce-product-attributes-item__label\"\u003eMaterials\u003c\/th\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 8px; font-style: italic; border-top: 0px; border-bottom: 1px dotted rgba(0, 0, 0, 0.1); margin: 0px; line-height: 1.5; background: rgba(0, 0, 0, 0.024);\" class=\"woocommerce-product-attributes-item__value\"\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px; padding: 8px 0px;\"\u003eGlass, Plastic\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"box-sizing: border-box; background-color: #f0f0f0;\" class=\"woocommerce-product-attributes-item woocommerce-product-attributes-item--attribute_pa_package-weight\"\u003e\n\u003cth style=\"box-sizing: border-box; padding: 8px; text-align: left; width: 150px; font-weight: bold; border-top: 0px; border-bottom: 1px dotted rgba(0, 0, 0, 0.1); margin: 0px; line-height: 1.5;\" class=\"woocommerce-product-attributes-item__label\"\u003ePackage Weight\u003c\/th\u003e\n\u003ctd style=\"box-sizing: border-box; padding: 8px; font-style: italic; border-top: 0px; border-bottom: 1px dotted rgba(0, 0, 0, 0.1); margin: 0px; line-height: 1.5;\" class=\"woocommerce-product-attributes-item__value\"\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px; padding: 8px 0px;\"\u003e60 g (2.12 oz)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eVespera Light Pollution Filter\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eVaonis 3-Year Warranty\u003c\/p\u003e","brand":"Vaonis","offers":[{"title":"Default Title","offer_id":51317677260836,"sku":"mzm1787937227545","price":141.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/3547\/4212\/files\/vespera-light-pollution-filter-ac023_1.webp?v=1787937236"},{"product_id":"baader-35-4nm-f2-ultra-highspeed-filters-cmos-optimized-h-alpha-o-iii-s-ii","title":"Baader 3.5 \/ 4nm f\/2 Ultra-Highspeed Filters – CMOS-optimized (H-alpha \/ O-III \/ S-II)","description":"\u003ch2\u003eBaader 3.5 \/ 4nm f\/2 Ultra-Highspeed Filters – CMOS-optimized (H-alpha \/ O-III \/ S-II)\u003c\/h2\u003e\n\u003cp\u003eBaader has released a whitepaper guiding you how to select the best filter for your telescope system, and why this is important in relation to \"PRESHIFT\" to stay \"on band\".\u003c\/p\u003e\n\u003cp\u003eNow with 47.4 mm unmounted for use with FCCT\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBaader H-alpha \/ O-III \/ S-II f \/ 2 Ultra-Highspeed Filter Set - Premium Grade\u003c\/li\u003e\n\u003cli\u003e3.5 \/ 4 nm half width (to harmonize the exposure time of H-alpha with O-III \/ S-II), recommended for extremely fast optical systems from f \/ 3.4 to f \/ 1.8\u003c\/li\u003e\n\u003cli\u003eSpecially designed for the special filter requirements when used with highly opened optics such as the Celestron RASA astrograph\u003c\/li\u003e\n\u003cli\u003eEnables the highest contrast even with the strongest light pollution, minimizes the size of the stars, makes the finest nebula details accessible - indispensable under Bortle 9\/8\/7 \/ (6) sky\u003c\/li\u003e\n\u003cli\u003eReflex-Blocker ™ hard-coated and optically polished - with sealed coating edges ( Life-Coat ™ )\u003c\/li\u003e\n\u003cli\u003eBlackened edges all around, with a filter front indicator in the form of a black outer edge on the front\u003c\/li\u003e\n\u003cli\u003eOptimized for modern CMOS cameras, but ideally suited for CCD camera technologies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe new generation of Baader CMOS-optimized filters features:\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCMOS-Optimized Baader Filter\u003c\/li\u003e\n\u003cli\u003eIncreased contrast\u003c\/li\u003e\n\u003cli\u003eEver more narrow passbands\u003c\/li\u003e\n\u003cli\u003eReflex-Blocker™ coatings, for largest ever freedom from halos, even under most adverse conditions concerning aux-optics\u003c\/li\u003e\n\u003cli\u003eFWHM on each filter category carefully designed to allow for 1:1:1 exposures, matched for typical CMOS quantum efficiency and s\/n ratio\u003c\/li\u003e\n\u003cli\u003eIdentical filter thickness to existing standards, with utmost care for parfocality\u003c\/li\u003e\n\u003cli\u003eBlackened edges all around, with filter-lead-side-indicator in the form of a black frontside outer rim, to additionally eliminate any reflection due to light falling onto the edge of a filter\u003c\/li\u003e\n\u003cli\u003eEach filter coated individually, with sealed coating edge (NOT cut out of a larger plate with coatings left exposed read more)\u003c\/li\u003e\n\u003cli\u003eLife-Coat™: evermore hard coatings to enable a non-aging coating for life – even in a most adverse environment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid rgba(128, 128, 128, 0.16); box-shadow: rgba(128, 128, 128, 0.11) 0px 1px 4px; display: block; border-collapse: collapse; max-width: 100%; height: auto; overflow: auto; white-space: normal; background-color: #ffffff; width: 1500.12px; text-align: left; table-layout: fixed; color: #4c5154; font-family: 'Libre Franklin', sans-serif; font-size: 15px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" id=\"product-attribute-specs-table\" class=\"data-table\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid rgba(128, 128, 128, 0.16); box-shadow: rgba(128, 128, 128, 0.11) 0px 1px 4px; display: block; border-collapse: collapse; max-width: 100%; height: auto; overflow: auto; white-space: normal; background-color: #ffffff; width: 1500.12px; text-align: left; table-layout: fixed; color: #4c5154; font-family: 'Libre Franklin', sans-serif; font-size: 15px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\n\u003ctbody data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);\"\u003e\n\u003ctr data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); height: 19px;\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); height: 19px;\"\u003e\n\u003cth data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"label\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003eMANUFACTURER\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"data\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003eBaader Planetarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); background: #eeeeee; height: 19px;\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); background: #eeeeee; height: 19px;\"\u003e\n\u003cth data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"label\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003eSUITABLE FOR F\/RATIO\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"data\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003e\u0026lt; f\/2.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); height: 19px;\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); height: 19px;\"\u003e\n\u003cth data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"label\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003eTRANSMISSION RANGE\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"data\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003eH-alpha \/ O-III \/ S-II\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); background: #eeeeee; height: 38px;\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); background: #eeeeee; height: 38px;\"\u003e\n\u003cth data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 38px;\" class=\"label\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 38px;\"\u003eFILTER THICKNESS (WITHOUT CELL)\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 38px;\" class=\"data\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 38px;\"\u003e\n\u003cp data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin-top: 0.9375rem; margin-bottom: 0.9375rem;\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin-top: 0.9375rem; margin-bottom: 0.9375rem;\"\u003e2 mm Thickness = 1.25\"\/ 2\" \/ 31mm \/ 36mm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin-top: 0.9375rem; margin-bottom: 0.9375rem;\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin-top: 0.9375rem; margin-bottom: 0.9375rem;\"\u003e3mm Thickness = 50.4mm \/ 50x50 \/ 65x65\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); height: 19px;\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); height: 19px;\"\u003e\n\u003cth data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"label\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003eHBW (HALFBANDWIDTH)\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"data\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003e3.5 nm (H-alpha) \/ 4 nm (O-III \/ S-II)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); background: #eeeeee; height: 19px;\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); background: #eeeeee; height: 19px;\"\u003e\n\u003cth data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"label\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003eCWL (CENTRAL WAVELENGTH)\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"data\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003e656,3 nm \/ 500,7 nm \/ 671,7 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); height: 38px;\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); height: 38px;\"\u003e\n\u003cth data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 38px;\" class=\"label\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 38px;\"\u003eAR-COATING\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 38px;\" class=\"data\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 38px;\"\u003eReflex-Blocker™ hard coated, planeoptically polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); background: #eeeeee; height: 19px;\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); background: #eeeeee; height: 19px;\"\u003e\n\u003cth data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"label\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003eSPECIAL FEATURES\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"data\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003eCMOS-optimized with\u003cspan data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);\"\u003e \u003c\/span\u003eLife-Coat™\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); height: 19px;\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); height: 19px;\"\u003e\n\u003cth data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"label\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003eFILTER SIZE\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"data\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003eMultiple\u003cbr data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);\"\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); background: #eeeeee; height: 19px;\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); background: #eeeeee; height: 19px;\"\u003e\n\u003cth data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"label\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003eFILTER USAGE\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"data\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003eCMOS, CCD, H-alpha, O-III, S-II\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); height: 19px;\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); height: 19px;\"\u003e\n\u003cth data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"label\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003eFILTER MOUNTED\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"data\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003eMounted (LPFC 6mm) \/ Unmounted \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); background: #eeeeee; height: 19px;\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); background: #eeeeee; height: 19px;\"\u003e\n\u003cth data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"label\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003eTYPE OF FILTER\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"data\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003ef\/2 Ultra-Highspeed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); height: 22.1875px;\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); height: 22.1875px;\"\u003e\n\u003cth data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 22.1875px;\" class=\"label\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 22.1875px;\"\u003eSINGLE OR SET?\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 22.1875px;\" class=\"data\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 22.1875px;\"\u003eSingles and Filter-Set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); background: #eeeeee; height: 19px;\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); background: #eeeeee; height: 19px;\"\u003e\n\u003cth data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"label\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-weight: 600; border: 1px solid #aaaaaa; font-family: 'Libre Franklin', sans-serif; font-style: normal; font-size: var(--font-size-body); padding: 2px; text-align: left; color: #4c4c4c; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003eFILTER SHAPE\u003c\/th\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\" class=\"data\" data-mce-style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 1px solid #aaaaaa; font-size: 13px; padding: 2px; width: 326.132px; overflow-wrap: break-word; margin-left: auto; margin-right: auto; height: 19px;\"\u003eround \/ square (depending on size)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eBaader 3.5 \/ 4nm f\/2 Ultra-Highspeed Filters\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\u003c\/ul\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\u003c\/ul\u003e\n\u003ch3 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At these longer wavelengths, the sensitivity of the unaided eye is reduced, so it is not suitable for visual observations. The filter is highly recommended for any planetary photography. At long-wavelength spectral range the atmospheric air turbulence (seeing) has much lower impact on the sharpness. 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