{"title":"Antlia Dual \u0026 Multi-Band Filters","description":"\u003cp\u003eAntlia dual \u0026amp; multi-band filters. Part of \u003ca href=\"\/collections\/antlia-filters\"\u003eAntlia Filters\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"antlia-alp-t-dual-band-5nm-filter-2-00-mounted","title":"Antlia ALP-T Dual Band 5nm Filter 2.00'' Mounted","description":"\u003cp style=\"text-size-adjust: 100%; margin: 0px; color: rgb(102, 102, 102); font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eThe Antlia ALP-T dual band 5nm filter is a dual line-pass filter which was designed to be used primarily with one-shot color (OSC) cameras such as DSLR's or astronomical OSC cameras. It can also be used as a narrowband filter for monochrome cameras to save imaging time. The advanced multi-coatings on our ALP-T ultra dual band filter effectively isolates the red Ha and the blue-green OIII lines light from emission nebulae, with almost total suppression of optical density (OD)4.5 on unwanted wavelengths from light pollution, moonlight, and airglow. The result is that our ALP-T dual band 5nm filter creates a superior signal-to-noise ratio and better contrast in your images. The filter enables the capture of the two main emission nebulae bands at the same time, whilst suppressing unwanted light pollution. It enables you to capture cleaner data and reduces the post processing efforts to isolate faint details from the background light pollution. As Antlia ALP-T dual band 5nm filter looks golden yellow to the naked eye, we also call it the Golden filter.\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; color: rgb(102, 102, 102); font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; color: rgb(102, 102, 102); font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cstrong style=\"text-size-adjust: 100%;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; color: rgb(246, 124, 1);\"\u003eApplication and Performance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"text-size-adjust: 100%; color: rgb(255, 167, 39);\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; color: rgb(102, 102, 102); font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eEngineered specifically for use with DSLR, CMOS, and CCD color cameras\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; color: rgb(102, 102, 102); font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eSuppression of optical density (OD)4.5 on unwanted visual wavelengths adds signal-to-noise\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; color: rgb(102, 102, 102); font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eExtremely steep bandpass edges minimize internal reflections\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; color: rgb(102, 102, 102); font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eIdeal flat- top and moderate bandpass reducing spectrum down shifts\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; color: rgb(102, 102, 102); font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eIon Gun Assisted Deposition coating technology on the double-sided polished substrate making it the most consistent and accurate light pollution suppression filter\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; color: rgb(102, 102, 102); font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eGood performance at focal ratios faster than F3.0 with contrast increasing as focal ratioincreases\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; color: rgb(102, 102, 102); font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eDesigned to suppress artificial lighting from Bortle scale 1 to Bortle scale 8\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; color: rgb(102, 102, 102); font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eNear IR (NIR) is blocked up to 1100nm\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; color: rgb(102, 102, 102); font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.7em;\"\u003e\u003cstrong style=\"text-size-adjust: 100%;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; color: rgb(227, 108, 10); font-size: 14px;\"\u003eNot Recommended:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.7em;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 14px;\"\u003eSolar imaging\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.7em;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 14px;\"\u003eNight visual observation\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.7em;\"\u003e\u003cstrong style=\"text-size-adjust: 100%;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; color: rgb(227, 108, 10); font-size: 13px;\"\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.7em;\"\u003e\u003cstrong style=\"text-size-adjust: 100%;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; color: rgb(227, 108, 10); font-size: 14px;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.7em;\"\u003e\u003cstrong style=\"text-size-adjust: 100%;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; color: rgb(227, 108, 10); font-size: 14px;\"\u003eNot Permitted:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 14px;\"\u003eDO NOT LOOK AT THE SUN WITH \u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 14px;\"\u003eANTLIA\u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-size: 14px;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: ??;\"\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: ??; font-size: 13px;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 14px;\"\u003eFILTER\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 14px;\"\u003eS\u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 14px;\"\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 14px;\"\u003eSerious eye damage will result if you\u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-size: 14px;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: ??;\"\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: ??; font-size: 13px;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 14px;\"\u003efail to observe the warning.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eWhen we design filters for astronomy imaging systems, we look at how they will work together with optical systems, carefully designing the blocking and bandpass parameters to achieve an optimum result. The out of band blocking rate is a very important performance index since it is designed to sharply attenuate off unwanted band wavelengths.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eEach filter is individually tested and scanned to ensure that the quality meets the high performance parameters. The end result is a filter that achieves excellent signal-to-noise but with a higher production cost. We believe the price to performance ratio compares more favorably than similar premium filters in the market.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cbr style=\"text-size-adjust: 100%; color: rgb(102, 102, 102); font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255);\"\u003e\u003c\/p\u003e","brand":"Antlia Filters","offers":[{"title":"Default Title","offer_id":44013702119535,"sku":"ANT-ALP-T-Dual","price":474.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ANT-5nm-1__18363.jpg?v=1766560189"},{"product_id":"antlia-alp-t-dual-narrowband-oiii-5nm-and-h-a-5nm-filter-36mm-round-unmounted","title":"Antlia ALP-T Dual Narrowband OIII (5nm) and H-a (5nm) Filter - 36mm Round Unmounted","description":"\u003cp style=\"text-size-adjust: 100%; margin: 0px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe Antlia ALP-T dual band 5nm filter is a dual line-pass filter which was designed to be used primarily with one-shot color (OSC) cameras such as DSLR's or astronomical OSC cameras. It can also be used as a narrowband filter for monochrome cameras to save imaging time. The advanced multi-coatings on our ALP-T ultra dual band filter effectively isolates the red Ha and the blue-green OIII lines light from emission nebulae, with almost total suppression of optical density (OD)4.5 on unwanted wavelengths from light pollution, moonlight, and airglow. The result is that our ALP-T dual band 5nm filter creates a superior signal-to-noise ratio and better contrast in your images. The filter enables the capture of the two main emission nebulae bands at the same time, whilst suppressing unwanted light pollution. It enables you to capture cleaner data and reduces the post processing efforts to isolate faint details from the background light pollution. As Antlia ALP-T dual band 5nm filter looks golden yellow to the naked eye, we also call it the Golden filter.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; color: rgb(102, 102, 102); font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; color: rgb(102, 102, 102); font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cstrong style=\"text-size-adjust: 100%;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; color: rgb(246, 124, 1);\"\u003eApplication and Performance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"text-size-adjust: 100%; color: rgb(255, 167, 39);\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eEngineered specifically for use with DSLR, CMOS, and CCD color cameras\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eSuppression of optical density (OD)4.5 on unwanted visual wavelengths adds signal-to-noise\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eExtremely steep bandpass edges minimize internal reflections\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eIdeal flat- top and moderate bandpass reducing spectrum down shifts\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eIon Gun Assisted Deposition coating technology on the double-sided polished substrate making it the most consistent and accurate light pollution suppression filter\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eGood performance at focal ratios faster than F3.0 with contrast increasing as focal ratioincreases\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eDesigned to suppress artificial lighting from Bortle scale 1 to Bortle scale 8\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eNear IR (NIR) is blocked up to 1100nm\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; color: rgb(102, 102, 102); font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.7em;\"\u003e\u003cstrong style=\"text-size-adjust: 100%;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; color: rgb(227, 108, 10); font-size: 14px;\"\u003eNot Recommended:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.7em;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12pt;\"\u003eSolar imaging\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.7em;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 14px;\"\u003eNight visual observation\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.7em;\"\u003e\u003cstrong style=\"text-size-adjust: 100%;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 13px;\"\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.7em;\"\u003e\u003cstrong style=\"text-size-adjust: 100%;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; color: rgb(227, 108, 10); font-size: 14px;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.7em;\"\u003e\u003cstrong style=\"text-size-adjust: 100%;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; color: rgb(227, 108, 10); font-size: 14px;\"\u003eNot Permitted:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 14px;\"\u003eDO NOT LOOK AT THE SUN WITH \u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 14px;\"\u003eANTLIA\u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-size: 14px;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: ??;\"\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: ??; font-size: 13px;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 14px;\"\u003eFILTER\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 14px;\"\u003eS\u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 14px;\"\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 14px;\"\u003eSerious eye damage will result if you\u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-size: 14px;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: ??;\"\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: ??; font-size: 13px;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 14px;\"\u003efail to observe the warning.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eWhen we design filters for astronomy imaging systems, we look at how they will work together with optical systems, carefully designing the blocking and bandpass parameters to achieve an optimum result. The out of band blocking rate is a very important performance index since it is designed to sharply attenuate off unwanted band wavelengths.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eEach filter is individually tested and scanned to ensure that the quality meets the high performance parameters. The end result is a filter that achieves excellent signal-to-noise but with a higher production cost. We believe the price to performance ratio compares more favorably than similar premium filters in the market.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cbr style=\"text-size-adjust: 100%; color: rgb(102, 102, 102); font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255);\"\u003e\u003c\/p\u003e","brand":"Antlia Filters","offers":[{"title":"Default Title","offer_id":44013735444591,"sku":"ANT-ALP-T-DUAL-36","price":399.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/antlia-alp-t-gold-dual-band-5nm-filter-36mm-4-1000x1000w__24104.jpg?v=1766561225"},{"product_id":"antlia-alp-t-dual-band-5nm-highspeed-filter-2-00-mounted","title":"Antlia ALP-T Dual Band 5nm Highspeed Filter - 2.00'' Mounted","description":"\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eALP-T Dual Band 5nm Highspeed Filters are further optimized to work with high-speed imaging systems by shifting slightly the passband and center wavelength. Using these highspeed filters between optics f\/2.2 and f\/3.6 shows much stronger and more contrasted in nebulae imaging compared to the standard version.\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eFor optics f-ratios slower than f\/3.6, the standard ALP-T Dual Band 5nm filter is highly recommended. Meanwhile, if you seek the best possible performance with any optics faster than f\/2.2, the highspeed version is the best choice.\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eBut keep in mind, the blue shift data by the computer simulation indicates narrowband filter shifts its bandwidth to shorter wavelengths with faster optics than f\/2, transmission at the emission wavelength may decrease perhaps 15%-20%. Although the Antlia ALP-T highspeed filter has similar transmission rates reduction in the H-a and OIII when the filter is used on fast optics, based on current standard version users’ data, it is evident that the filter still has the high performance of increase in emission nebula contrast and minimized halo.\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eThe highspeed version price is the same as the standard filters and double benefits for the high-speed optics users. Worth mentioning is that Antlia inspected and measured products piece by piece with one of Agilent Cary’s professional spectrophotometer, resolution\/slit width is up to 0.2nm, which make us provide highly reliable and consistent products to you.\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eThe Antlia ALP-T dual band 5nm series filter is a dual line-pass filter that was designed to be used primarily with one-shot color (OSC) cameras such as DSLR's and astronomical OSC cameras. It can also be used as a narrowband filter for monochrome cameras to save imaging time. The advanced multi-coatings on our ALP-T ultra dual band filter effectively isolate the red Ha and the blue-green OIII lines light from emission nebulae, with almost total suppression of optical density (OD)4.5 on unwanted wavelengths from light pollution, moonlight, and airglow. The result is that our ALP-T dual band 5nm filter creates a superior signal-to-noise ratio and better contrast in your images.\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eThe filter enables the capture of the two main emission nebulae bands at the same time, whilst suppressing unwanted light pollution. It enables you to capture cleaner data and reduces the post-processing efforts to isolate faint details from the background light pollution.\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cstrong style=\"text-size-adjust: 100%;\"\u003e\u003cspan style=\"text-size-adjust: 100%;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cstrong style=\"text-size-adjust: 100%;\"\u003e\u003cspan style=\"text-size-adjust: 100%;\"\u003eApplication and Performance:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eDesigned especially for fast astronomy optics, in particular f-ratios f\/2.2 to f\/3.6\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eEngineered specifically for use with DSLR, CMOS, and CCD color cameras\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eSuppression of optical density (OD)4.5 on unwanted wavelengths adds signal-to-noise\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eExtremely steep bandpass edges minimize internal reflections\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eIdeal flat-top and moderate bandpass reducing spectrum down shifts\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eIon Gun Assisted Deposition coating technology on the double-sided polished substrate making it the most consistent and accurate light pollution suppression filter\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eDesigned to suppress artificial lighting from Bortle scale 1 to Bortle scale 8\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003eNear IR (NIR) is blocked up to 1050nm\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px;\"\u003e\u003cstrong style=\"text-size-adjust: 100%;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial;\"\u003eNot Recommended:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px;\"\u003e\u003cspan style=\"text-size-adjust: 100%;\"\u003eSolar imaging\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px;\"\u003e\u003cspan style=\"text-size-adjust: 100%;\"\u003eNight visual observation\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px;\"\u003e\u003cstrong style=\"text-size-adjust: 100%;\"\u003e\u003cspan style=\"text-size-adjust: 100%;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px;\"\u003e\u003cstrong style=\"text-size-adjust: 100%;\"\u003e\u003cspan style=\"text-size-adjust: 100%;\"\u003eNot Permitted:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px;\"\u003e\u003cspan style=\"text-size-adjust: 100%;\"\u003eDO NOT LOOK AT THE SUN WITH THIS FILTER\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px;\"\u003e\u003cspan style=\"text-size-adjust: 100%;\"\u003eSerious eye damage will result if you fail to observe the warning\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px;\"\u003e\u003cbr style=\"text-size-adjust: 100%; color: rgb(102, 102, 102); font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255);\"\u003e\u003c\/p\u003e","brand":"Antlia Filters","offers":[{"title":"Default Title","offer_id":44013745373295,"sku":"ANT-ALP-T-Dual-HS","price":474.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/5nm_252520hs_252520dual_252520band__64300.1682635934.1280.1280.jpg?v=1766561553"},{"product_id":"antlia-alp-t-dual-band-5nm-highspeed-filter-36mm","title":"Antlia ALP-T Dual Band 5nm Highspeed Filter - 36mm","description":"\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eALP-T Dual Band 5nm Highspeed Filters are further optimized to work with high-speed imaging systems by shifting slightly the passband and center wavelength. Using these highspeed filters between optics f\/2.2 and f\/3.6 shows much stronger and more contrasted in nebulae imaging compared to the standard version.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eFor optics f-ratios slower than f\/3.6, the standard ALP-T Dual Band 5nm filter is highly recommended. Meanwhile, if you seek the best possible performance with any optics faster than f\/2.2, the highspeed version is the best choice.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eBut keep in mind, the blue shift data by the computer simulation indicates narrowband filter shifts its bandwidth to shorter wavelengths with faster optics than f\/2, transmission at the emission wavelength may decrease perhaps 15%-20%. Although the Antlia ALP-T highspeed filter has similar transmission rates reduction in the H-a and OIII when the filter is used on fast optics, based on current standard version users’ data, it is evident that the filter still has the high performance of increase in emission nebula contrast and minimized halo.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe highspeed version price is the same as the standard filters and double benefits for the high-speed optics users. Worth mentioning is that Antlia inspected and measured products piece by piece with one of Agilent Cary’s professional spectrophotometer, resolution\/slit width is up to 0.2nm, which make us provide highly reliable and consistent products to you.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe Antlia ALP-T dual band 5nm series filter is a dual line-pass filter that was designed to be used primarily with one-shot color (OSC) cameras such as DSLR's and astronomical OSC cameras. It can also be used as a narrowband filter for monochrome cameras to save imaging time. The advanced multi-coatings on our ALP-T ultra dual band filter effectively isolate the red Ha and the blue-green OIII lines light from emission nebulae, with almost total suppression of optical density (OD)4.5 on unwanted wavelengths from light pollution, moonlight, and airglow. The result is that our ALP-T dual band 5nm filter creates a superior signal-to-noise ratio and better contrast in your images.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe filter enables the capture of the two main emission nebulae bands at the same time, whilst suppressing unwanted light pollution. It enables you to capture cleaner data and reduces the post-processing efforts to isolate faint details from the background light pollution.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cstrong style=\"text-size-adjust: 100%;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cstrong style=\"text-size-adjust: 100%;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial;\"\u003eApplication and Performance:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eDesigned especially for fast astronomy optics, in particular f-ratios f\/2.2 to f\/3.6\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eEngineered specifically for use with DSLR, CMOS, and CCD color cameras\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eSuppression of optical density (OD)4.5 on unwanted wavelengths adds signal-to-noise\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eExtremely steep bandpass edges minimize internal reflections\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eIdeal flat-top and moderate bandpass reducing spectrum down shifts\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eIon Gun Assisted Deposition coating technology on the double-sided polished substrate making it the most consistent and accurate light pollution suppression filter\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eDesigned to suppress artificial lighting from Bortle scale 1 to Bortle scale 8\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eNear IR (NIR) is blocked up to 1050nm\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255); line-height: 1.5em;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px;\"\u003e\u003cstrong style=\"text-size-adjust: 100%;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial;\"\u003eNot Recommended:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial;\"\u003eSolar imaging\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial;\"\u003eNight visual observation\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px;\"\u003e\u003cstrong style=\"text-size-adjust: 100%;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px;\"\u003e\u003cstrong style=\"text-size-adjust: 100%;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial;\"\u003eNot Permitted:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial;\"\u003eDO NOT LOOK AT THE SUN WITH THIS FILTER\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial;\"\u003eSerious eye damage will result if you fail to observe the warning\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px;\"\u003e\u003cbr style=\"text-size-adjust: 100%; color: rgb(102, 102, 102); font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255);\"\u003e\u003c\/p\u003e","brand":"Antlia Filters","offers":[{"title":"Default Title","offer_id":44013745602671,"sku":"ANT-ALP-T-Dual-HS-36","price":399.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/5nm_252520hs_252520dual_252520band_25252036__85187.1682635935.1280.1280.jpg?v=1766561558"},{"product_id":"antlia-triband-rgb-ultra-filter-2-00-mounted","title":"Antlia Triband RGB Ultra Filter - 2.00'' Mounted","description":"\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-size: 16px; font-family: Arial; font-weight: bold;\"\u003eAntlia Triband RGB Ultra Filter\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-size: 16px; font-family: Arial; font-weight: bold;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003eIt is designed for light pollution suppression for OSC and Mono cameras. The spectral \u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003edesign selected the most substantial information in the RGB bands, which makes Antlia Triband RGB Ultra Filter possible to shoot over 90% of deep sky objects, in addition to its excellent performance on emission nebula, different from other ultra-narrowband filters, it is able to capture galaxies, reflection nebulae, and star clusters from a Bortle 8 location to Bortle 1 while presenting more balanced RGB colors in your images. Also, it has a broad \u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003ebandpass designed to cope with faster optics up to the f\/2 focal ratio.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003eThe quantum efficiency of the B channel in current CMOS sensors is often significantly lower than that of R and G channels. \u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003eAntlia team was to provide a filter with a more realistic color balance for astrophotography from light polluted locations. \u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003eThe problem with the low blue wavelength efficiency becomes apparent when imaging reflection nebulae and blue stars. In \u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003eCMOS sensors, the blue wavelengths also contain contribution from the stronger green spectrum, thereby affecting the balance \u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003eof the blue colours. Many popular imaging objects contain reflection nebula with faint blue hues such the central part of\u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003eNGC2264. Therefore, we designed Antlia Triband RGB Ultra Filter that not only retains the HSO emission signal but also\u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003eincreases the amount of Luminous flux of the blue B channel. By improving the blue wavelength transmission, the color of the\u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003ephoto is better balanced and easier to manage in post processing.\u003c\/span\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-size: 11px; font-family: Arial; font-weight: bold;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-weight: bold; font-family: Arial; font-size: 12px;\"\u003eApplication and Performance:\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003eIt is workable to shoot galaxies, reflection nebulae and star clusters.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003eRefined coating process makes the Triband RGB Ultra filters with excellent halo suppression and improved \u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003esignal-to-noise performance.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003eIt has been specifically designed for balanced color transmission using Antlia's experience in spectrum design.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003eThe balanced transmission allows the minimal color cast to broadband emission objects such as stars, galaxies, and \u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003eglobular clusters.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003eThe Triband RGB Ultra can be used with nearly all systems as fast as f\/2 with minimal loss of efficiency or shifts in\u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003espectral response.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003eWhen shooting LRGB with mono cameras, unless you are wanting to image LDN (dark nebulae) the Triband RGB Ultra \u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003ecan be used as a luminance filter replacement for objects such as nebulae and galaxies to improve contrast and signal to\u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003enoise ratio.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003eThe Triband RGB Ultra is able to better isolate the H-alpha, O3 and blue spectrum from the background light pollution.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003eFor visual use, Triband RGB Ultra filter ensures the high transmittance of the HSO emission line and can be used for \u003c\/span\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003eobserving deep-sky objects with large-diameter telescopes.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003eThe filter provides excellent flexibility and compatibility with both OSC and Mono camera systems.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"text-size-adjust: 100%; font-family: Arial; font-size: 12px;\"\u003eIt facilitates the imaging of most astronomical objects using all optical configurations down to f\/2 focal ratio.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-weight: bold; font-family: Arial; font-size: 12px;\"\u003e\u003cbr style=\"text-size-adjust: 100%;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-weight: bold; font-family: Arial; font-size: 12px;\"\u003eSize Available: 2’’ mounted\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"text-size-adjust: 100%; margin: 0px; line-height: 1.5em;\"\u003e\u003cbr style=\"text-size-adjust: 100%; color: rgb(102, 102, 102); font-family: ????; font-size: 14px; background-color: rgb(255, 255, 255);\"\u003e\u003c\/p\u003e","brand":"Antlia Filters","offers":[{"title":"Default Title","offer_id":44013803995247,"sku":"ANT-RGB-Ultra","price":244.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Triband_252520Ultra__41067.1682636044.1280.1280.jpg?v=1766563258"},{"product_id":"antlia-quad-band-anti-light-pollution-filter-2","title":"Antlia Quad Band Anti-Light Pollution Filter 2\"","description":"\u003cp\u003eThe Antlia Quad Band Anti-Light Pollution Filter is a light suppression filter for color and monochrome cameras. It is able to shoot most deep sky objects like galaxies, reflection nebulae, emission nebula, and star clusters from a Bortle 8 location to Bortle 1 as its spectral transmission passes through visible light region, near-ultraviolet (NUV) and near-infrared (NIR) region.\u003c\/p\u003e\n\u003cp\u003eAntlia Quad Band filter has a broad bandpass designed to cope with faster optics up to the f\/2 focal ratio.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eConsidering the high quantum efficiency (QE) characteristics of the latest cameras in the near-infrared region and this region is less susceptible to artificial light pollution, the Antlia Quad Band Light-Pollution Filter adds high transmission in the near-infrared (NIR) band. This spectrum design improves image signal-to-noise ratio and contrast by capturing signals in visible bands and NIR region, while also maintaining ood color balance and being easier to manage in post-processing.\u003c\/p\u003e\n\u003cp\u003eCertain full-spectrum objects like M51, M83 possess significant signal in the near-infrared (NIR) region, you can possibly capture these deep sky objects more contrasted with the Antlia Quad Band filter under light polluted condition.\u003c\/p\u003e\n\u003cp\u003eWhen using this filter with a camera that has UV\/IR cut protective glass, the visible band transmission signal is retained, but the IR cut limits your ability to capture targets with infrared signal.\u003c\/p\u003e\n\u003cp\u003eTherefore, the Antlia Quad Band filter is more suitable for cameras with AR protective glass as they can capture both NIR and visible band signals.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp class=\"p\"\u003e\u003cstrong\u003e\u003cspan\u003eSpectrum\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan\u003e Specifications:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable border=\"0\" width=\"580\" cellspacing=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"center\"\u003e \u003c\/td\u003e\n\u003ctd valign=\"center\"\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eH-alpha\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\" width=\"100\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eS-II\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\" width=\"107\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eO-III\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\" width=\"103\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eH-beta\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eNII\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"center\"\u003e\n\u003cp\u003e\u003cspan\u003eWavelength\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\"\u003e\n\u003cp\u003e\u003cspan\u003e656.3nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\" width=\"100\"\u003e\n\u003cp\u003e\u003cspan\u003e671.6nm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e672.4nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\" width=\"107\"\u003e\n\u003cp\u003e\u003cspan\u003e495.9nm,\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e500.7nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\" width=\"103\"\u003e\n\u003cp\u003e\u003cspan\u003e486.1nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\"\u003e\n\u003cp\u003e\u003cspan\u003e658.3nm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e654.8nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"center\"\u003e\n\u003cp\u003e\u003cspan\u003ePeak Transmission\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\"\u003e\n\u003cp\u003e\u003cspan\u003e＞92%\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\" width=\"100\"\u003e\n\u003cp\u003e\u003cspan\u003e＞92%\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\" width=\"107\"\u003e\n\u003cp\u003e\u003cspan\u003e＞92%\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\" width=\"103\"\u003e\n\u003cp\u003e\u003cspan\u003e＞92%\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\"\u003e\n\u003cp\u003e\u003cspan\u003e92%\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"center\"\u003e\n\u003cp\u003e\u003cspan\u003eBlocking\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"5\" valign=\"center\" width=\"534\"\u003e\n\u003cp\u003e\u003cspan\u003e≥OD4@ 300-1\u003c\/span\u003e\u003cspan\u003e050\u003c\/span\u003e\u003cspan\u003enm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"center\"\u003e\n\u003cp\u003e\u003cspan\u003eFilter Thickness\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"5\" valign=\"center\" width=\"534\"\u003e\n\u003cp\u003e\u003cspan\u003e2mm+\/-0.05mm\u003c\/span\u003e\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\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSpectrum Curve:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e\u003cimg class=\"need_fix\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ABUIABACGAAg5LTqrwYop7Dg2gQwqwk4-AU_08aa0d61-78a8-4df2-b66e-36d70491b152.jpg?v=1766570201\" alt=\"Antlia Quad Band filter spectrum curve.jpg\" width=\"1193\" height=\"762\"\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe main features and application:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- Anti-Light Pollution\u003c\/p\u003e\n\u003cp\u003eThe Antlia Quad Band filter is an effective solution for reducing light pollution, as it cuts out most of the orange-yellow lights from 589nm and part of blue lights from LEDs\u003c\/p\u003e\n\u003cp\u003e- Possible to shoot over 95% of deep sky objects\u003c\/p\u003e\n\u003cp\u003e- Unique spectral design offers more possibilities for astrophotography\u003c\/p\u003e\n\u003cp\u003e- High transmittance of the main emission lines Ha\/SII\/OIII\/H-Beta in the visible region, enhances the astrophotography's high SNR and contrast;\u003c\/p\u003e\n\u003cp\u003e- Near-infrared (NIR) region transmittance\u003c\/p\u003e\n\u003cp\u003e- Passing near infrared region is for shooting deep sky objects that cannot be shot with other filters without NIR transmission\u003c\/p\u003e\n\u003cp\u003e- The broad bandpass designed to cope with faster optics up to the f\/2 focal ratio.\u003c\/p\u003e\n\u003cp\u003e- Good color balance\u003c\/p\u003e\n\u003cp\u003e- It is easier to achieve color balance by adding the short-wavelength transmission\u003c\/p\u003e\n\u003cp\u003e- Superior optical reliability reduces post image processing\u003c\/p\u003e\n\u003cp\u003e- Basic Substrate: Optical, Single \/ Non-glued substrate\u003c\/p\u003e\n\u003cp\u003e- Surface Quality: S\/D (scratch\/dig)= 60\/40 (Refer to MIL-O-13830)\u003c\/p\u003e\n\u003cp\u003e- Transmitted Wavefront: Lambda\/4 or better.\u003c\/p\u003e\n\u003cp\u003e- Parallelism: less than 30 arcsec\u003c\/p\u003e\n\u003cp\u003e- Warranty: 3-years against delamination\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSizes\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan\u003eand MAP Prices\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan\u003e：\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"0\" width=\"666\" cellspacing=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"center\" width=\"150\"\u003e\n\u003cp\u003e\u003cspan\u003eSize\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\" width=\"516\"\u003e\n\u003cp\u003e\u003cspan\u003eMinimum Advertised Pricing (MAP)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"center\" width=\"150\"\u003e\n\u003cp\u003e\u003cspan\u003eMounted: 2’’\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\" width=\"516\"\u003e\n\u003cp\u003e\u003cspan\u003eUS$\u003c\/span\u003e\u003cspan\u003e198\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"center\" width=\"150\"\u003e\n\u003cp\u003e\u003cspan\u003eOther sizes\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\" width=\"516\"\u003e\n\u003cp\u003e\u003cspan\u003eAvailability is to be confirmed\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFilter Ring:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAntlia standard ring:1.25’’ (M28.5*0.6)，2’’(M48*0.75)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUltra-thin filter cell to minimize vignetting by maximize possible clear aperture\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBlack Anodized Finish\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLaser Engraving No Fading\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eNot Recommended:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSolar imaging\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eNight visual observation\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eNot Permitted:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDO NOT LOOK AT THE SUN WITH THIS FILTER\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSerious eye damage will result if you fail to observe the warning.\u003c\/span\u003e\u003c\/p\u003e","brand":"Antlia Filters","offers":[{"title":"Default Title","offer_id":44014081409135,"sku":"ANT-QUAD","price":267.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ANT-Quad__34911.jpg?v=1766570203"}],"url":"https:\/\/ontariotelescope.com\/collections\/antlia-dual-band.oembed","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}