{"title":"Filters for Colour Cameras","description":"","products":[{"product_id":"zwo-duo-band-filter-1-25","title":"ZWO Duo-Band Filter 1.25","description":"\u003cp\u003eZWO 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 (One Shot Colour) 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\u003cp\u003ePrecision CNC machined  from Aircraft grade alloys,hard anodised finished Cell with Laser engravings, finely polished optical surface to ensure 1\/4 wavefront and \u0026lt;30  arc seconds parallelism over the both surfaces. Precise double sided coatings with anti-reflection coatings\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e ZWO Duo-Band Filter Technical Specification\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSize: Standard 1.25”\u003c\/p\u003e\n\u003cp\u003eThickness: 1.85 mm\u003c\/p\u003e\n\u003cp\u003eBandwidth: HA (15nm) OIII (35nm)\u003c\/p\u003e\n\u003cp\u003eSurface quality: 60\/40 (Refer to MIL-O-13830)\u003c\/p\u003e\n\u003cp\u003eSchott substrate material\u003c\/p\u003e\n\u003cp\u003eMore than 90% transmission at major OIII line 486.nm1, 496nm and 501nm.\u003c\/p\u003e\n\u003cp\u003eMore than 80% transmission at Ha line 656.3nm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\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.\u003ca href=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/5.png\"\u003e\u003cbr\u003e\n\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"alignleft wp-image-59979 size-full\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/ZWO-KIND-REMiND.jpg\" alt=\"ZWO Duo-Band Filter 1.25\" width=\"549\" height=\"268\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eT\u003c\/strong\u003e\u003cstrong\u003eest Results\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eImages captured with ASI color cameras and Duo-Band Filters. You can see that the potential for deep space photography in strong light polluted areas is vastly improved with the Duo-Band filters.\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"size-full wp-image-59980 alignleft\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/ZWODB-Test.jpg\" alt=\"\" width=\"617\" height=\"308\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":42045239394373,"sku":"ZWO-DB125","price":149.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-duo-band-filter-125-275796.jpg?v=1731541427"},{"product_id":"zwo-duo-band-filter-2inch","title":"ZWO Duo-Band Filter 2inch","description":"\u003cp\u003eZWO Duo-Band Filter 2inch  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 (One Shot Colour) 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\u003cp\u003ePrecision CNC machined  from Aircraft grade alloys,hard anodised finished Cell with Laser engravings, finely polished optical surface to ensure 1\/4 wavefront and \u0026lt;30  arc seconds parallelism over the both surfaces. Precise double sided coatings with anti-reflection coatings\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e ZWO Duo-Band Filter Technical Specification\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSize: Standard :2”\u003c\/p\u003e\n\u003cp\u003eThickness: 1.85 mm\u003c\/p\u003e\n\u003cp\u003eBandwidth: HA (15nm) OIII (35nm)\u003c\/p\u003e\n\u003cp\u003eSurface quality: 60\/40 (Refer to MIL-O-13830)\u003c\/p\u003e\n\u003cp\u003eSchott substrate material\u003c\/p\u003e\n\u003cp\u003eMore than 90% transmission at major OIII line 486.nm1, 496nm and 501nm.\u003c\/p\u003e\n\u003cp\u003eMore than 80% transmission at Ha line 656.3nm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\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.\u003ca href=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/5.png\"\u003e\u003cbr\u003e\n\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"alignleft wp-image-59979 size-full\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/ZWO-KIND-REMiND.jpg\" alt=\"ZWO Duo-Band Filter 1.25\" width=\"549\" height=\"268\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eT\u003c\/strong\u003e\u003cstrong\u003eest Results\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eImages captured with ASI color cameras and Duo-Band Filters. You can see that the potential for deep space photography in strong light polluted areas is vastly improved with the Duo-Band filters.\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"size-full wp-image-59980 alignleft\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/ZWODB-Test.jpg\" alt=\"\" width=\"617\" height=\"308\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":42045239492677,"sku":"ZWO-DB2","price":279.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-duo-band-filter-2inch-958989.jpg?v=1731541427"},{"product_id":"antlia-alp-t-dual-band-5nm-filter-2-inch-m48-mounted","title":"Antlia ALP-T Dual Band 5nm Filter - 2 Inch\/M48 Mounted","description":"\u003cp\u003eALP-T Dual Band 5nm Filter is best suited for optics f-ratios slower than f\/3.6, the standard Antlia ALP-T Dual Band 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\n\u003cp\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\n\u003cp\u003eThe Antlia ALP-T Dual Band 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\n\u003cp\u003e\u003cstrong\u003eApplication and Performance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned especially for optics, slower than f\/3.6\u003c\/p\u003e\n\u003cp\u003eEngineered specifically for use with DSLR, CMOS, and CCD color cameras\u003c\/p\u003e\n\u003cp\u003eSuppression of optical density (OD) 4.5 on unwanted wavelengths adds signal-to-noise\u003c\/p\u003e\n\u003cp\u003eExtremely steep bandpass edges minimize internal reflections\u003c\/p\u003e\n\u003cp\u003eIdeal flat-top and moderate bandpass reducing spectrum downshifts\u003c\/p\u003e\n\u003cp\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\n\u003cp\u003eDesigned to suppress artificial lighting from Bortle scale 1 to Bortle scale 8\u003c\/p\u003e\n\u003cp\u003eNear IR (NIR) is blocked up to 1050nm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" width=\"585px\" align=\"LEFT\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"25.3%\"\u003eHydrogen-alpha\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\"\u003eOxygen III\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003eFWHM\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"25.3%\"\u003e5nm\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\"\u003e5nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003eCWL (Central Wavelength)\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"25.3%\"\u003e657.8nm\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\"\u003e502.2nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003ePeak Transmission\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"25.3%\"\u003e88%\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\"\u003e82%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003eBlocking\u003c\/td\u003e\n\u003ctd colspan=\"2\" rowspan=\"1\" valign=\"top\"\u003e≥OD4.5 @ 300-1050nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003eFilter Thickness\u003c\/td\u003e\n\u003ctd colspan=\"2\" valign=\"top\"\u003e2mm+\/-0.05mm\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 \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFilter Ring:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2'' (M48*0.75)\u003c\/p\u003e\n\u003cp\u003eUltra-thin filter cell to minimize vignetting by maximize possible clear aperture\u003c\/p\u003e\n\u003cp\u003eBlack Anodized Finish\u003c\/p\u003e\n\u003cp\u003eLaser Engraving No Fading\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpectrum Curve:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/ABUIABACGAAgjqickgYov6i9hwIwwgk4lgw-4.jpg\"\u003e\u003cimg class=\"aligncenter size-full wp-image-138748\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/ABUIABACGAAgjqickgYov6i9hwIwwgk4lgw-4.jpg\" alt=\"\" width=\"1218\" height=\"1558\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot Recommended:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSolar imaging\u003c\/p\u003e\n\u003cp\u003eNight visual observation\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot Permitted:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDO NOT LOOK AT THE SUN WITH THIS FILTER\u003c\/p\u003e\n\u003cp\u003eSerious eye damage will result if you fail to observe the warning\u003c\/p\u003e","brand":"QHY","offers":[{"title":"Default Title","offer_id":42045283172421,"sku":"40050","price":649.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/antlia-alp-t-dual-band-5nm-filter-2-inchm48-mounted-132422.jpg?v=1731540419"},{"product_id":"alp-t-dual-band-5nm-highspeed-filter","title":"Antlia ALP-T Dual Band 5nm Highspeed Filter","description":"\u003cp\u003eAntlia ALP-T Dual Band 5nm Highspeed Filters are 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,  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\n\u003cp\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\n\u003cp\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\n\u003cp\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\n\u003cp\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\n\u003cp\u003e\u003cstrong\u003eApplication and Performance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned especially for fast astronomy optics, in particular f-ratios f\/2.2 to f\/3.6\u003c\/p\u003e\n\u003cp\u003eEngineered specifically for use with DSLR, CMOS, and CCD color cameras\u003c\/p\u003e\n\u003cp\u003eSuppression of optical density (OD)4.5 on unwanted wavelengths adds signal-to-noise\u003c\/p\u003e\n\u003cp\u003eExtremely steep bandpass edges minimize internal reflections\u003c\/p\u003e\n\u003cp\u003eIdeal flat-top and moderate bandpass reducing spectrum down shifts\u003c\/p\u003e\n\u003cp\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\n\u003cp\u003eDesigned to suppress artificial lighting from Bortle scale 1 to Bortle scale 8\u003c\/p\u003e\n\u003cp\u003eNear IR (NIR) is blocked up to 1050nm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" width=\"585px\" align=\"LEFT\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"25.3%\"\u003eHydrogen-alpha\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\"\u003eOxygen III\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003eFWHM\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"25.3%\"\u003e5nm\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\"\u003e5nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003eCWL (Central Wavelength)\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"25.3%\"\u003e657.8nm\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\"\u003e502.2nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003ePeak Transmission\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"25.3%\"\u003e88%\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\"\u003e82%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003eBlocking\u003c\/td\u003e\n\u003ctd colspan=\"2\" rowspan=\"1\" valign=\"top\"\u003e≥OD4.5 @ 300-1050nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003eFilter Thickness\u003c\/td\u003e\n\u003ctd colspan=\"2\" valign=\"top\"\u003e2mm+\/-0.05mm\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 \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFilter Ring:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2'' (M48*0.75)\u003c\/p\u003e\n\u003cp\u003eUltra-thin filter cell to minimize vignetting by maximize possible clear aperture\u003c\/p\u003e\n\u003cp\u003eBlack Anodized Finish\u003c\/p\u003e\n\u003cp\u003eLaser Engraving No Fading\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpectrum Curve:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/ABUIABACGAAgjqickgYov6i9hwIwwgk4lgw-4.jpg\"\u003e\u003cimg class=\"aligncenter wp-image-138748 size-full\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/ABUIABACGAAgjqickgYov6i9hwIwwgk4lgw-4.jpg\" alt=\"\" width=\"1218\" height=\"1558\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot Recommended:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSolar imaging\u003c\/p\u003e\n\u003cp\u003eNight visual observation\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot Permitted:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDO NOT LOOK AT THE SUN WITH THIS FILTER\u003c\/p\u003e\n\u003cp\u003eSerious eye damage will result if you fail to observe the warning\u003c\/p\u003e","brand":"QHY","offers":[{"title":"Default Title","offer_id":42045298114629,"sku":"040052","price":689.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/antlia-alp-t-dual-band-5nm-highspeed-filter-901684.jpg?v=1731540419"},{"product_id":"optolong-l-extreme-f-2-filter-2-inch","title":"Optolong L-eXtreme f\/2 filter 2 inch","description":"\u003cp\u003e\u003cstrong\u003e1.  L-eXtreme F\/2  Introduction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOptolong L-eXtreme F\/2 is a dual-band (500.7 nm and 656.28 nm, FWHM=7 nm) narrowband pass filter that meets the requirements for transmission at continuously varying angles. Astronomically characterised spectral lines (OIII, Ha) as the main transmission wavelengths, the OIII and H-Alpha nebula emission lines pass accurately at f2 - f3.3 Focal Ratio.   It's a product that Optolong has developed specifically for fast optical systems or fast focal ratio imaging systems. It has performed well on RASA, HyperStar, and other fast ratio telescopes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e♦Together with one-shot colour astronomical cameras, monochrome astronomical cameras, and Digital SLR cameras, you can fast and quickly obtain clear and detailed images of the deep sky;\u003c\/p\u003e\n\u003cp\u003e♦Ideal for fast optical systems, like RASA, Hyperstar, and other fast focal ratio telescope users;\u003c\/p\u003e\n\u003cp\u003e♦Recommended for using a fast optical system with a focal ratio from f2 to f3.3;\u003c\/p\u003e\n\u003cp\u003e♦Anti-light pollution、better contrast、more details of the celestial bodies: This filter cuts out background light and noise beyond the target celestial bodies to get better details and contrast of the images. L-eXtreme F\/2 can effectively block light pollution so that the images will not affected by unwanted lights and skylight of the background. You can quickly get satisfactory pictures in fast optical systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2. Spectrum and Characteristic\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"letter-spacing: 0em;\"\u003eBased on the characteristics of celestial bodies’ emission lines and light pollution emission lines, the L-eXtreme F\/2 retains the prominent nebula OIII and Ha colours while blocking most of the light pollution. Specifically designed and optimally calculated for the characteristics of a fast optical system, the L-eXtreme F2 always keeps both OIII and Ha bands having high transmittance, which helps users to capture nebulae emission lines in these bands more accurately and quickly and obtain better astrophotographic images.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"aligncenter wp-image-145765 size-full\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/L-eXtreme-f2a.jpg\" alt=\"L-eXtreme F\/2\" width=\"1000\" height=\"1015\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow to read the chart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e▲The horizontal axis is the Wavelength in Nanometers(nm).\u003c\/p\u003e\n\u003cp\u003e▲The vertical axis is transmission in %.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/0ff2d7f395c427aa390ff53daf333cec-1.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3. Coating Technology\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e·Multi-layers anti-reflection coating\u003c\/p\u003e\n\u003cp\u003e·Non-cementing optical substrate coating\u003c\/p\u003e\n\u003cp\u003e·Optolong filter adopts precision coating based on Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL(central wavelength) no deviation affected by temperature change.\u003c\/p\u003e\n\u003cp\u003e·Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off-band.\u003c\/p\u003e\n\u003cp\u003eSKU: 14803\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":42045303750725,"sku":"14803","price":539.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/optolong-l-extreme-f2-filter-2-inch-947434.jpg?v=1731540833"},{"product_id":"optolong-l-quad-enhance-filter-2inch","title":"Optolong L-Quad Enhance Filter 2 inch","description":"\u003cp\u003eL-Quad Enhance Filter (L-QEF) is a quad bandpass light pollution suppression filter for colour cameras. It effectively suppresses the transmission of light pollution wavelengths, especially light pollution generated by artificial lighting (including mercury and sodium lamps), as well as the effects of natural skylight-induced effects on the shot, thus effectively enhancing the contrast and details of the celestial bodies, and making the objects more distinct and stereoscopic. This filter provides better color balance while improving resistance of light pollution. L-QEF can be used for both wide field astrophotography, such as the Milky Way in Summer and Winter, and deep sky objects such as nebulae, galaxies, star clusters, and so forth; It allows you to save a lot of time during the shooting process and get better results at the same time. The design of quad bandpass maximises the colour balance of nebulae, galaxies and other broadband spectral targets.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCuts out light pollution from mercury and sodium lamps and produces a nice broadband image with minimal colour cast;\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"letter-spacing: 0em;\"\u003eSignal-to-noise ratio (SNR);\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"letter-spacing: 0em;\"\u003eNear IR cut-off to 1000nm, reducing the effects of IR noise;\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"letter-spacing: 0em;\"\u003eL-QEF has more than 90% transmittance of the nebula emission lines at H-Beta\/OIII\/H-Alpha\/SII, with cut-off depth from OD2 to OD4, thus providing a significant increase in resistance to light pollution. L-QEF is good for night sky from Bortel 1 to Bortel 7 levels; (Bortel 8, Bortel 9 environments shall not be recommended, kindly chose Optolong other narrow-band filters, 3nm, 7nm type of filters are available.);\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"letter-spacing: 0em;\"\u003eSuitable for wide range of deep sky targets: it covers most nebulae, galaxies, star clusters, reflected and emitted line signals astronomical objects with higher contrast and rich details while maintaining excellent colour balance. L-QEF is superior to other filters of the same type.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\u003cstrong\u003eSpectrum and Characteristic\u003c\/strong\u003e\u003c\/h5\u003e\n\u003ctable style=\"height: 206px;\" border=\"1\" width=\"724\" cellspacing=\"1\" cellpadding=\"1\" align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSbustrate\u003c\/td\u003e\n\u003ctd\u003eoptical glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e1.85mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFWHM\u003c\/td\u003e\n\u003ctd\u003eQuad bandpass filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking range\u003c\/td\u003e\n\u003ctd\u003e300-1000nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking Depth\u003c\/td\u003e\n\u003ctd\u003eOD2-OD4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface quality\u003c\/td\u003e\n\u003ctd\u003e60\/40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitted Wavefront RMS\u003c\/td\u003e\n\u003ctd\u003eλ\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e Parallelism\u003c\/td\u003e\n\u003ctd\u003e30s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eBased on the characteristics of celestial bodies’ emission lines and light pollution emission lines, L-Quad Enhance filter effectively reduces the impact of light pollution and suppresses the background light of astronomical objects, thus effectively enhancing the contrast and details of the celestial bodies. Using L-QEF filter can help you save a lot of time during the shooting process, yet obtaining incredible results.\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"alignnone wp-image-145519 size-medium\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Quadband-800x391.jpg\" alt=\"Optolong L-Quad\" width=\"800\" height=\"391\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":42045303914565,"sku":"14702","price":329.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/optolong-l-quad-enhance-filter-2inch-456161.jpg?v=1731540833"},{"product_id":"optolong-l-ultimate-filter-2-inch","title":"Optolong L-Ultimate filter","description":"\u003cp\u003eIt's about a 3nm dual band designed to drastically reduce the effect of light pollution, the 3nm isolates the nebulae's emissions into H-Alpha (red) and OIII (green-blue). It blocks light pollution, maximizes the signal from nebulae, and darkens the sky background. It also blocks artificial light from mercury vapor lamps, high and low pressure sodium vapor lights, and unwanted natural light caused by the emission of neutral oxygen in our atmosphere. Maximizes the transmission of the main emission lines of the nebula in OIII (496nm and 500nm) and H-alpha (656nm). Used with DSLR, color\/MONO CMOS and CCD, however, this filter is not suitable for fast ratio systems.\u003c\/p\u003e\n\u003cp\u003eThe advantage of L-Ultimate is that it only passes through the emission lines OIII(500.7nm) and Ha(656.3nm), in which case all other light pollution emission lines are eliminated so that only the emission and reflection signals of the nebula are captured during imaging. Therefore, the sky background of the image is darker, and the contrast between the nebulae and the signal-to-noise ratio are improved to the greatest extent. In heavy light pollution areas, the product can also selectively filter light pollution and clutter signals through the emission lines of nebulae, and finally avoid the impact of light pollution on astrophotography.\u003c\/p\u003e\n\u003cp\u003eIt is different from the series of dual-narrowband L-eNhance and L-eXtreme in that L-Ultimate is a dual-3nm bandwidth filter that only passes through Ha and OIII emission lines. You will get a darker sky background, more contrast of the image and the suppression on stars. L-Ultimate has also been optimised in terms of halo performance, so that there is no obvious halo when shooting on a bright star object.\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"alignnone size-medium wp-image-145496\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Graph--800x392.png\" alt=\"\" width=\"800\" height=\"392\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eFeatures\u003c\/p\u003e\n\u003ctable border=\"1\" width=\"600\" cellspacing=\"2\" cellpadding=\"1\" align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubstrate\u003c\/td\u003e\n\u003ctd\u003eoptical glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFWHM\u003c\/td\u003e\n\u003ctd\u003eOIII 3nm Ha 3nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking range\u003c\/td\u003e\n\u003ctd\u003e300-1000nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;OD4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface quality\u003c\/td\u003e\n\u003ctd\u003e60\/40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitted Wavefront RMS:\u003c\/td\u003e\n\u003ctd\u003eλ\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParallelism\u003c\/td\u003e\n\u003ctd\u003e30seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n","brand":"Optolong","offers":[{"title":"1.25 inch","offer_id":43103921078341,"sku":"11601","price":500.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch","offer_id":43103921111109,"sku":"11602","price":670.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/optolong-l-ultimate-filter-2-inch-880415.jpg?v=1731540833"},{"product_id":"optolong-l-pro-filter","title":"Optolong L-Pro Filter","description":"\u003cp\u003eOptolong L-Pro 1.25 inch is multi-bandpass filter which offers better color balance by maximizing the transmission band. The balanced transmission allows astrophotos to be taken with minimal color cast to broadband emission objects such as galaxies, reflection nebulae and globular star clusters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003eWarning - Do not use this filter for solar purposes ! \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOptolong L-Pro (L-Professional) filter is designed to improve the visibility of various deepsky objects. By selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings including mercury vapor lamps, both high \u0026amp; low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Together with the highly transparent in main nebula emission lines at OIII(496nm and 500nm), H-beta (486nm), NII(654nm and 658nm), H-alpha(656nm) as well as SII(672nm), the filter is suitable for enhancing the contrast and details for both visual and photograghic purpose at sub-rural area with heavy light pollution.\u003c\/p\u003e\n\u003cp\u003eOptolong L-Pro is multi-bandpass filter which offers better color balance by maximizing the transmission band. The balanced transmission allows astrophotos to be taken with minimal color cast to broadband emission objects such as galaxies, reflection nebulae and globular star clusters. L-Pro is the best choice for light pollution suppression.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOptical glass fine material\u003c\/li\u003e\n\u003cli\u003eSpectrum: 380-750nm\u003c\/li\u003e\n\u003cli\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\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\u003cli\u003eHigh transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm\u0026amp;500nm, SII 672nm and H-beta 486nm).\u003c\/li\u003e\n\u003cli\u003ePrecision off-band blocking, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nm and 578nm).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg class=\"alignnone size-medium wp-image-145135\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Optolong-l-pro-light-curve--800x422.jpg\" alt=\"\" width=\"800\" height=\"422\"\u003e\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"1.25 inch","offer_id":42151311409221,"sku":"10201","price":260.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch","offer_id":42151311441989,"sku":"10202","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS-C","offer_id":42151311474757,"sku":"10203","price":430.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS-FF","offer_id":42151311507525,"sku":"10204","price":470.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon NK-FF","offer_id":42151311540293,"sku":"10205","price":470.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/optolong-l-pro-filter-2-inch-706785.jpg?v=1731540833"},{"product_id":"optolong-l-enhance-filter","title":"Optolong L-eNhance filter","description":"\u003cp\u003e\u003cstrong\u003eL-eNhance filter\u003c\/strong\u003e\u003cbr\u003eThe relentless spread of urbanization and its associated light pollution have become a growing problem for all amateur astrophotographers. The current solutions to the problem can be expensive and might include the purchase of a monochrome camera, several types of narrowband filters, and a filter wheel.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptolong L-eNhance\u003c\/strong\u003e filter provides an economical and practical solution for amateurs. It is a dual-band pass filter that has been designed for DSLR (digital SLR), color CMOS, and monochrome CCD cameras. The convenience and cost-effectiveness of this filter allow amateurs to image a rich selection of astronomical images, even in bright, heavily light-polluted areas. Optolong believes the design of our L-eNhance filter is a technical innovation among filters. It effectively isolates the H-Alpha, H-Beta, and Oxygen III nebula emission lines and achieves a maximum transmission of up to 90%. The performance of this filter delivers images that superbly control the impact of light-polluted skies.\u003c\/p\u003e\n\u003cp\u003eHydrogen is the largest, the most primitive, the simplest, and the oldest element in the universe. Scientists consider that Hydrogen amounts to more than 90% of visible substances in space. Our sun is 5 billion years old, but so far hydrogen is still the key matter of nuclear fusion. While the sulfur element does not have much scientific significance, keeping H and O is meaningful for the exploration of life.\u003cbr\u003eTherefore, we highlight H-a, H-b, O3, and O2, and reduce the signal of sulfur.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2. Spectrum and Characteristic\u003c\/strong\u003e\u003cbr\u003eSubstrate: B270\u003cbr\u003eThickness: 1.85mm\u003cbr\u003eTpeak: T\u0026gt;90%\u003cbr\u003eBlocking range: 300-1000nm\u003cbr\u003eBlocking depth: light pollution line blocking \u0026gt;99%\u003cbr\u003eSurface quality: 60\/40\u003cbr\u003eTransmitted Wavefront RMS: λ\/4\u003cbr\u003eParallelism: 30s\u003c\/p\u003e\n\u003cp\u003e\u003cimg height=\"488\" width=\"1000\" alt=\"L-eNhance filter 1.25\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/L-enhnce-125c.jpg\" class=\"aligncenter wp-image-145746 size-full\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/L-enhnce-125c.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eHow to read the chart?\u003c\/p\u003e\n\u003cp\u003e▲The horizontal axis is the Wavelength in Nanometers(nm).\u003c\/p\u003e\n\u003cp\u003e▲The vertical axis is transmission in %.\u003c\/p\u003e\n\u003cp\u003e▲The WHITE line shows the transmission of the filter. The artificial emission lines are shown in Yellow. The emission lines from the constellation are shown in GREEN, BLUE, AND RED.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/0ff2d7f395c427aa390ff53daf333cec.jpg\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/0ff2d7f395c427aa390ff53daf333cec.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eSKU: 13801\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"1.25 inch","offer_id":42151578140741,"sku":"13801","price":310.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch","offer_id":42151578173509,"sku":"13802","price":400.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS-C","offer_id":42151578206277,"sku":"13804","price":450.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/optolong-l-enhance-filter-125-inch-180620.jpg?v=1731540834"},{"product_id":"optolong-l-extreme-filter","title":"Optolong L-eXtreme filter","description":"\u003cp\u003eL-eXtreme is a two 7nm bandpass filter which can be used with one-shot color cameras like DSLR's (digital SLR), and monochrome CCD cameras, it is also more suited for fast systems. The convenience and cost effectiveness of this filter allows amateurs to image a rich emission nebulas, even in bright, light pollution skies. Optolong believes the design of L-eXtreme filter would be better choice for fast systems in competitive price. It isolates the H-Alpha, and Oxygen III nebula emission lines so that the contrast and signal-to-noise ratio between nebulae were maximized. For people who is living in very light polluted areas, or when the moon is out, the L-eXtreme will be a good filter.\u003c\/p\u003e\n\u003cp\u003eUnlike the Optolong L-eNhance filter which is a tri-band (transmits Hb, Ha, and OIII), the L-eXtreme filter is dual band that passes Ha and OIII emission lines.The advantage of the L-eXtreme filter is that there is no transmission between the H-beta and OIII lines, as there is no nebula emission lines there. In this case, it isn't letting light pollution come through so that maximize nebulas signal and make the sky background darker while imaging. The L-eXtreme filter should better isolate the emission lines only and better protect from light pollution.\u003c\/p\u003e\n\u003cp\u003eHydrogen is the largest, the most primitive, the simplest, and the oldest element in the universe. Scientists consider that Hydrogen amounts to more than 90% of visible substance in space. Our sun is 5 billion years old, but so far hydrogen is still the key matter of nuclear fusion. While the sulfur element does not have much scientific significance, so keeping H and O is meaning for exploration of life.\u003cbr\u003eTherefore, we highlight H-a, H-b, O3 and O2, and reduce the signal of sulfur.\u003c\/p\u003e\n\u003ch5\u003eSpectrum and Characteristics\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eSbustrate: B270\u003c\/li\u003e\n\u003cli\u003eThickness: 1.85mm\u003c\/li\u003e\n\u003cli\u003eTpeak: T\u0026gt;90%\u003c\/li\u003e\n\u003cli\u003eBlocking range: 300-1000nm\u003c\/li\u003e\n\u003cli\u003eBlcoking depth: light pollution line blocking \u0026gt;99%\u003c\/li\u003e\n\u003cli\u003eSurface quality: 60\/40\u003c\/li\u003e\n\u003cli\u003eTransmitted Wavefront RMS: λ\/4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg class=\"alignnone size-medium wp-image-145155\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Optolong-L-eXtreme-curve--800x386.jpg\" alt=\"\" width=\"800\" height=\"386\"\u003e\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"1.25 inch","offer_id":42151619723333,"sku":"13901","price":420.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch","offer_id":42151619756101,"sku":"13902","price":540.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z Clip-In","offer_id":44862003740741,"sku":"AS100313","price":420.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/optolong-l-extreme-filter-2-inch-422662.jpg?v=1731540833"},{"product_id":"optolong-uhc-filter","title":"Optolong UHC filter","description":"\u003cp\u003e\u003cspan\u003eThe UHC (Ultra High Contrast) broadband filter is designed to improve the visibility of various deepsky objects. By selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings including mercury vapor lamps, both high \u0026amp; low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Together with the highly transparent in main nebula emission lines at OIII(496nm and 500nm), H-beta (486nm), NII(654nm and 658nm), H-alpha(656nm) as well as SII(672nm), the filter is suitable for enhancing the contrast and details for both visual and photograghic purpose at sub-rural area with heavy light pollution.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMain Use and Performance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSuitable for color CCD cameras and unmodified DSLRs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUHC with narrower passband provides higher contrast than CLS. Thus it is more suitable for urban environment where you suffer from severe light pollution.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUHC has a substantial red passband and offer superb views for objects like the Orion Nebula (M42).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLight pollution filter do 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\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cu\u003eWARNING\u003c\/u\u003e: The filters of Optolong are not designed for sun observation. DO NOT LOOK AT THE SUN WITH OPTOLONG FILTER. You would be BLIND if you fail to observe the warning.\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"438\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"187\"\u003e\n\u003ccol width=\"251\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl65\" width=\"187\"\u003eSbustrate\u003c\/td\u003e\n\u003ctd width=\"251\"\u003eoptical glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl65\"\u003e\u003cspan\u003eTave\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;95%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl65\"\u003e\u003cspan\u003eBlocking range\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e300-700nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl65\"\u003e\u003cspan\u003eBlcoking depth\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"xl65\"\u003eOD3, light pollution line blocking \u0026gt;99%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl65\"\u003e\u003cspan\u003eSurface quality\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e60\/40 (Refer to MIL-O-13830A, MIL-C-48497A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl65\"\u003e\u003cspan\u003eTransmitted Wavefront RMS\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e  ¼ λ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl65\"\u003e\u003cspan\u003e Parallelism\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e30s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Optolong","offers":[{"title":"1.25 inch","offer_id":42152607547461,"sku":"10101","price":99.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch","offer_id":42152607580229,"sku":"10102","price":150.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS-C","offer_id":42152607612997,"sku":"10103","price":170.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS-FF","offer_id":42152607645765,"sku":"10104","price":200.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon NK-FF","offer_id":42152607678533,"sku":"10105","price":200.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/OptolongUHC.jpg?v=1731557654"},{"product_id":"astronomik-cls-filter","title":"Astronomik CLS Filter","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cstrong\u003eThe Astronomik CLS 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. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Astronomik CLS 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\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/astronomik_cls_trans.png?v=1731970910\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch4\u003eMain use\u003c\/h4\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\u003ch4\u003eSuitability\u003c\/h4\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\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e92% transmission at 486nm (H-beta)\u003c\/li\u003e\n\u003cli\u003e92% transmission at 496nm (O\u003cspan\u003eIII\u003c\/span\u003e)\u003c\/li\u003e\n\u003cli\u003e92% transmission at 501nm (O\u003cspan\u003eIII\u003c\/span\u003e)\u003c\/li\u003e\n\u003cli\u003e97% transmission at 656nm (H alpha)\u003c\/li\u003e\n\u003cli\u003epass from 450 to 540nm and beyond 650nm\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\u003cli\u003eSince 2008 we do ship filters with a completely new design. Any kind of halo or strange reflection is a matter of past\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25 inch (M28\/5)","offer_id":42156188237893,"sku":"8h0053","price":140.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch (M48)","offer_id":42156188270661,"sku":"8h0054","price":265.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS APS-C Clip","offer_id":42156188303429,"sku":"8h00ic","price":210.0,"currency_code":"AUD","in_stock":true},{"title":"Cannon XT EOS APS-C Clip","offer_id":42156188336197,"sku":"8h00ke","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS XL Clip","offer_id":42156188368965,"sku":"8h00lc","price":280.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS R XL Clip","offer_id":42156188401733,"sku":"8h11g9","price":310.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS M Clip","offer_id":42156188434501,"sku":"8h00r6","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"Sony alpha 7 Clip","offer_id":42156188467269,"sku":"8h00xa","price":310.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon XL Clip","offer_id":42156188500037,"sku":"8h11as","price":310.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z XL Clip","offer_id":42156188532805,"sku":"8h11kx","price":310.0,"currency_code":"AUD","in_stock":true},{"title":"Pentax K-1 Clip","offer_id":42156188565573,"sku":"8h11eb","price":310.0,"currency_code":"AUD","in_stock":true},{"title":"T-Mount (M42x075)","offer_id":42170250526789,"sku":null,"price":219.0,"currency_code":"AUD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":42156188598341,"sku":"8h00ia","price":295.0,"currency_code":"AUD","in_stock":true},{"title":"31mm","offer_id":42156188631109,"sku":"8h00fi","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"36mm","offer_id":42156188663877,"sku":"8h00fj","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"50mm","offer_id":42156188696645,"sku":"8h00a3","price":265.0,"currency_code":"AUD","in_stock":true},{"title":"M49","offer_id":42156188729413,"sku":"8h00tl","price":280.0,"currency_code":"AUD","in_stock":true},{"title":"M52","offer_id":42156188762181,"sku":"8h00tm","price":295.0,"currency_code":"AUD","in_stock":true},{"title":"M55","offer_id":42156188794949,"sku":"8h00tn","price":540.0,"currency_code":"AUD","in_stock":true},{"title":"M58","offer_id":42156188827717,"sku":"8h00to","price":550.0,"currency_code":"AUD","in_stock":true},{"title":"M62","offer_id":42156188860485,"sku":"8h00tp","price":550.0,"currency_code":"AUD","in_stock":true},{"title":"M67","offer_id":42156188893253,"sku":"8h00tq","price":580.0,"currency_code":"AUD","in_stock":true},{"title":"M72","offer_id":42156188926021,"sku":"8h00h3","price":580.0,"currency_code":"AUD","in_stock":true},{"title":"M77","offer_id":42156188958789,"sku":"8h00nz","price":580.0,"currency_code":"AUD","in_stock":true},{"title":"50 x 50mm Unmounted","offer_id":42156188991557,"sku":"8h00ad","price":295.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Astronomik_CLS_1_25-Inch_4.jpg?v=1731970699"},{"product_id":"astronomik-cls-ccd-filter","title":"Astronomik CLS CCD Filter","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cstrong\u003eThe Astronomik CLS CCD is suitable under light-polluted skies for DSLR Cameras, which have been remodeled for astronomical use. The filter enhances the contrast between all deep-sky objects and the background. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe CLS-CCD Filter enhances the contrast between astronomical objects and the background. Due to the wider transmission curve compared to UHC filters, a greater amount of light will pass the filter. Stars will be less dimmed. This filter has been optimized to block as much spurious light as possible and simultaneously provide the best performance for 'useful' light. A good filter for DSLR-, CCD- and film b\/w-photography as well as observation of deep-sky-objects with telescopes or photo lenses of all aperture f\/2 and above.\u003c\/p\u003e\n\u003ch4\u003eMain use\u003c\/h4\u003e\n\u003cp\u003eThe filter blocks completely emission lines of artificial light sources like streetlights (e.g. sodium- and mercury-vapor) as well as the airglow. All 'important' emission lines as well as the spectral range of the night-adapted eye are beeing passed. The supplementary IR-blocking layer allows the use for DSLR- and Webcams without an integrated IR-block filter.\u003c\/p\u003e\n\u003ch4\u003eOther uses\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eEasier resolution of Double Stars.\u003c\/li\u003e\n\u003cli\u003eWith the EOS-Clip model, photography with DSLR cameras is feasible even unter extreme light-polluting conditions without shifting the white balance.\u003c\/li\u003e\n\u003cli\u003eThe 1,25\" and 2\" socket models can be used for observations from light-polluted areas.\u003c\/li\u003e\n\u003cli\u003eIf you plan to create color images from emission line data, our CLS-CCD filter is a great choice for the Luminance channel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAlternatives\u003c\/h4\u003e\n\u003cp\u003eCLS: For cameras with an integrated IR-filter or for visual observation.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/astronomik_cls-ccd_trans.png?v=1731971148\"\u003e\u003c\/p\u003e\n\u003ch4\u003eSuitability\u003c\/h4\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): Reasonable, 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: Very good, optimized rejection of light pollution\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): Very good, colour balance is near perfect\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\u003ch4\u003eTechnical Data\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e95% transmission at 486nm (H-beta)\u003c\/li\u003e\n\u003cli\u003e95% transmission at 496nm (O\u003cspan\u003eIII\u003c\/span\u003e)\u003c\/li\u003e\n\u003cli\u003e95% transmission at 501nm (O\u003cspan\u003eIII\u003c\/span\u003e)\u003c\/li\u003e\n\u003cli\u003e97% transmission at 656nm (H-alpha)\u003c\/li\u003e\n\u003cli\u003epass from 450 to 520nm and from 640 to 690nm\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\u003cli\u003eSince 2008 we do ship filters with a completely new design. Any kind of halo or strange reflection is a matter of past\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg\u003e\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25 inch (M28\/5)","offer_id":42156261277765,"sku":"8h00dp","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch (M48)","offer_id":42156261310533,"sku":"8h00dq","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS APS-C Clip","offer_id":42156261343301,"sku":"8h00dn","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"Cannon XT EOS APS-C Clip","offer_id":42156261376069,"sku":"8h00kf","price":280.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS XL Clip","offer_id":42156261408837,"sku":"8h00ld","price":365.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS R XL Clip","offer_id":42156261441605,"sku":"8h11ga","price":380.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS M Clip","offer_id":42156261474373,"sku":"8h00r7","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"Sony alpha 7 Clip","offer_id":42156261507141,"sku":"8h00xb","price":365.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon XL Clip","offer_id":42156261539909,"sku":"8h11at","price":365.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z XL Clip","offer_id":42156261572677,"sku":"8h11ky","price":380.0,"currency_code":"AUD","in_stock":true},{"title":"Pentax K-1 Clip","offer_id":42156261605445,"sku":"8h11eg","price":380.0,"currency_code":"AUD","in_stock":true},{"title":"T-Mount (M42x075)","offer_id":42156261638213,"sku":"8h00ed","price":295.0,"currency_code":"AUD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":42156261670981,"sku":"8h00ef","price":380.0,"currency_code":"AUD","in_stock":true},{"title":"31mm","offer_id":42156261703749,"sku":"8h00fg","price":210.0,"currency_code":"AUD","in_stock":true},{"title":"36mm","offer_id":42156261736517,"sku":"8h00fh","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"50mm","offer_id":42156261769285,"sku":"8h00eh","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"M49","offer_id":42156261802053,"sku":"8h00tt","price":350.0,"currency_code":"AUD","in_stock":true},{"title":"M52","offer_id":42156261834821,"sku":"8h00tu","price":365.0,"currency_code":"AUD","in_stock":true},{"title":"M55","offer_id":42156261867589,"sku":"8h00tv","price":740.0,"currency_code":"AUD","in_stock":true},{"title":"M58","offer_id":42156261900357,"sku":"8h00tw","price":740.0,"currency_code":"AUD","in_stock":true},{"title":"M62","offer_id":42156261933125,"sku":"8h00tx","price":765.0,"currency_code":"AUD","in_stock":true},{"title":"M67","offer_id":42156261965893,"sku":"8h00ty","price":780.0,"currency_code":"AUD","in_stock":true},{"title":"M72","offer_id":42156261998661,"sku":"8h00em","price":780.0,"currency_code":"AUD","in_stock":true},{"title":"M77","offer_id":42156262031429,"sku":"8h00u0","price":780.0,"currency_code":"AUD","in_stock":true},{"title":"27mm Unmounted","offer_id":42156262064197,"sku":"8h00l4","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"42mm Unmounted","offer_id":42156262096965,"sku":"8h11b4","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"50 x 50mm Unmounted","offer_id":42156264554565,"sku":"8h00ek","price":365.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Astronomik_CLS-CCD_1_25-Inch_11.jpg?v=1731971361"},{"product_id":"astronomik-l-1-uv-ir-filter","title":"Astronomik L-1 UV-IR Block Filter","description":"\u003cp\u003eAstronomik now offers you a range of three different UV+IR blockers as Luminance filters. The different spectral window of each new Luminance filters is designed to tune your setup to get the sharpest image from any optical design and any camera.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003eThe Luminance channel is probably the most important for a great final image! You want as much signal as possible so the filter should have the highest transmission possible with a wide spectral bandpass. This combination provides the greatest sensitivity and gives you the highest photon counts on your pixels. While the high transmission level is a great aspect of the new Astronomik Luminance filters, not all optical instruments or additional optical elements like correctors, field-flatteners or reducers, have perfect colour correction so it can be the width of the spectral band pass of  the Luminance filter that can cause problems. A band pass that is too wide will allow the transmission of incompletely focused light (Chromatic aberration), making stars appear soft or bloated. In such cases image processing can become difficult, so having a slightly narrowed spectral window in your Luminance filter can reduce or eliminate this damaging effect.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eTo give you all the tools to gather the best data possible \u003c\/span\u003e\u003cstrong\u003ewe have expanded our line of Luminance filters\u003c\/strong\u003e\u003cspan\u003e: Now you can select a Luminance filter perfectly matched to the kind of telescope you use, to get the highest signal and sharpest image for the Luminance channel!\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDepending on the color correction of your scope you may use a wider spectral window for the Luminance data. The L1 filter has the widest spectral window, the L2 is about the same as our current L-Filter and the L3 is much narrower.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIf you use an optical system that is completely free of any chromatic aberration you should get an L1 filter for your setup. For general use the L2 filter is well suited to most optical systems with a corrector, flattener or reducer in the optical train while the L3 filter is designed for users of refractors with a less-than-perfect color correction and in combination with the new Deep-Sky RGB filters, the L3 filter will minimise the problem of bluish halos around stars.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe transmission curve characteristics and coatings on the new Luminance filters have been designed and engineered in such a way that no halos or reflections will be visible. Even with bright stars in the field of view you will be able to reveal the faintest structures in nebulas or galaxies.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eLike all Astronomik Filters, the new Luminance filters are made using an extremely durable and scratch resistant coating, deposited on the finest polished optical substrate, which is free of any striae or internal strains. All substrates are made to exactly the same thickness, so all of our filters are parfocal.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eAdditional note for observers working under light polluted skies:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIf your observing site suffers from light pollution you should try to use our CLS-CCD as a replacement for the Luminance filter. The transmission curve of the CLS-CCD will give you approximately the same amount of energy in all three colour channels while blocking nearly all unwanted artifical light pollution. Customers who replaced the Lx filter with the CLS-CCD are amazed by the increased quality of their data. This small change gives you the opportunity to take much deeper images from your current observing site.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/AlleLxFilter_V2.jpg?v=1731712853\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25 inch (M28\/5)","offer_id":42156303122501,"sku":"8h00oz","price":140.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch (M48)","offer_id":42156303155269,"sku":"8h00pk","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS APS-C Clip","offer_id":42156303188037,"sku":"8h00sj","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"Cannon XT EOS APS-C Clip","offer_id":42156303220805,"sku":"8h00mv","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS XL Clip","offer_id":42156303253573,"sku":"8h00su","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS R XL Clip","offer_id":42156303286341,"sku":"8h11ge","price":265.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS M Clip","offer_id":42156303319109,"sku":"8h00t3","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"Sony alpha 7 Clip","offer_id":42156303351877,"sku":"8h00xr","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon XL Clip","offer_id":42156303384645,"sku":"8h11c3","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z XL Clip","offer_id":42156303417413,"sku":"8h11kz","price":265.0,"currency_code":"AUD","in_stock":true},{"title":"Pentax K-1 Clip","offer_id":42156303450181,"sku":"8h11fa","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"T-Mount (M42x075)","offer_id":42156303482949,"sku":"8h00rn","price":210.0,"currency_code":"AUD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":42156303515717,"sku":"8h00ry","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"31mm","offer_id":42156303548485,"sku":"8h00pv","price":150.0,"currency_code":"AUD","in_stock":true},{"title":"36mm","offer_id":42156303581253,"sku":"8h00qg","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"50mm","offer_id":42156303614021,"sku":"8h00qr","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"M49","offer_id":42156303646789,"sku":"8h00up","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"M52","offer_id":42156303679557,"sku":"8h00uq","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"M55","offer_id":42156303712325,"sku":"8h00ur","price":440.0,"currency_code":"AUD","in_stock":true},{"title":"M58","offer_id":42156303745093,"sku":"8h00us","price":440.0,"currency_code":"AUD","in_stock":true},{"title":"M62","offer_id":42156303777861,"sku":"8h00ut","price":450.0,"currency_code":"AUD","in_stock":true},{"title":"M67","offer_id":42156303810629,"sku":"8h00uu","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"M72","offer_id":42156303843397,"sku":"8h00uv","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"M77","offer_id":42156303876165,"sku":"8h00uw","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"27mm Unmounted","offer_id":42156303908933,"sku":"8h00o4","price":115.0,"currency_code":"AUD","in_stock":true},{"title":"42mm Unmounted","offer_id":42156303941701,"sku":"8h11br","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"50 x 50mm Unmounted","offer_id":42156303974469,"sku":"8h00rc","price":280.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Astronomik_L-1-UV-IR-Block_1_25-Inch_73e2f4a3-2c3c-4cb8-b262-e41dbc457f2b.jpg?v=1731714012"},{"product_id":"astronomik-l-2-uv-ir-block-filter","title":"Astronomik L-2 UV-IR Block Filter","description":"\u003cp\u003eAstronomik now offers you a range of three different UV+IR blockers as Luminance filters. The different spectral window of each new Luminance filters is designed to tune your setup to get the sharpest image from any optical design and any camera.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003eThe Luminance channel is probably the most important for a great final image! You want as much signal as possible so the filter should have the highest transmission possible with a wide spectral bandpass. This combination provides the greatest sensitivity and gives you the highest photon counts on your pixels. While the high transmission level is a great aspect of the new Astronomik Luminance filters, not all optical instruments or additional optical elements like correctors, field-flatteners or reducers, have perfect colour correction so it can be the width of the spectral band pass of  the Luminance filter that can cause problems. A band pass that is too wide will allow the transmission of incompletely focused light (Chromatic aberration), making stars appear soft or bloated. In such cases image processing can become difficult, so having a slightly narrowed spectral window in your Luminance filter can reduce or eliminate this damaging effect.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eTo give you all the tools to gather the best data possible \u003c\/span\u003e\u003cstrong\u003ewe have expanded our line of Luminance filters\u003c\/strong\u003e\u003cspan\u003e: Now you can select a Luminance filter perfectly matched to the kind of telescope you use, to get the highest signal and sharpest image for the Luminance channel!\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDepending on the color correction of your scope you may use a wider spectral window for the Luminance data. The L1 filter has the widest spectral window, the L2 is about the same as our current L-Filter and the L3 is much narrower.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIf you use an optical system that is completely free of any chromatic aberration you should get an L1 filter for your setup. For general use the L2 filter is well suited to most optical systems with a corrector, flattener or reducer in the optical train while the L3 filter is designed for users of refractors with a less-than-perfect color correction and in combination with the new Deep-Sky RGB filters, the L3 filter will minimise the problem of bluish halos around stars.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe transmission curve characteristics and coatings on the new Luminance filters have been designed and engineered in such a way that no halos or reflections will be visible. Even with bright stars in the field of view you will be able to reveal the faintest structures in nebulas or galaxies.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eLike all Astronomik Filters, the new Luminance filters are made using an extremely durable and scratch resistant coating, deposited on the finest polished optical substrate, which is free of any striae or internal strains. All substrates are made to exactly the same thickness, so all of our filters are parfocal.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eAdditional note for observers working under light polluted skies:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIf your observing site suffers from light pollution you should try to use our CLS-CCD as a replacement for the Luminance filter. The transmission curve of the CLS-CCD will give you approximately the same amount of energy in all three colour channels while blocking nearly all unwanted artifical light pollution. Customers who replaced the Lx filter with the CLS-CCD are amazed by the increased quality of their data. This small change gives you the opportunity to take much deeper images from your current observing site.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/AlleLxFilter_V2.jpg?v=1731712853\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25 inch (M28\/5)","offer_id":42156307513413,"sku":"8h00pa","price":125.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch (M48)","offer_id":42156307546181,"sku":"8h00pl","price":210.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS APS-C Clip","offer_id":42156307578949,"sku":"8h00sk","price":160.0,"currency_code":"AUD","in_stock":true},{"title":"Cannon XT EOS APS-C Clip","offer_id":42156307611717,"sku":"8h00mw","price":180.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS XL Clip","offer_id":42156307644485,"sku":"8h00sv","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS R XL Clip","offer_id":42156307677253,"sku":"8h11gf","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS M Clip","offer_id":42156307710021,"sku":"8h00t4","price":180.0,"currency_code":"AUD","in_stock":true},{"title":"Sony alpha 7 Clip","offer_id":42156307742789,"sku":"8h00xs","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon XL Clip","offer_id":42156307775557,"sku":"8h11c4","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z XL Clip","offer_id":42156307808325,"sku":"8h11l0","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"Pentax K-1 Clip","offer_id":42156307841093,"sku":"8h11fb","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"T-Mount (M42x075)","offer_id":42156307873861,"sku":"8h00ro","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":42156307906629,"sku":"8h00rz","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"31mm","offer_id":42156307939397,"sku":"8h00pw","price":145.0,"currency_code":"AUD","in_stock":true},{"title":"36mm","offer_id":42156307972165,"sku":"8h00qh","price":160.0,"currency_code":"AUD","in_stock":true},{"title":"50mm","offer_id":42156308004933,"sku":"8h00qs","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"M49","offer_id":42156308037701,"sku":"8h00ux","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"M52","offer_id":42156308070469,"sku":"8h00uy","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"M55","offer_id":42156308103237,"sku":"8h00uz","price":410.0,"currency_code":"AUD","in_stock":true},{"title":"M58","offer_id":42156308136005,"sku":"8h00v0","price":410.0,"currency_code":"AUD","in_stock":true},{"title":"M62","offer_id":42156308168773,"sku":"8h00v1","price":425.0,"currency_code":"AUD","in_stock":true},{"title":"M67","offer_id":42156308201541,"sku":"8h00v2","price":440.0,"currency_code":"AUD","in_stock":true},{"title":"M72","offer_id":42156308234309,"sku":"8h00v3","price":440.0,"currency_code":"AUD","in_stock":true},{"title":"M77","offer_id":42156308267077,"sku":"8h00v4","price":450.0,"currency_code":"AUD","in_stock":true},{"title":"27mm Unmounted","offer_id":42156308299845,"sku":"8h00o5","price":110.0,"currency_code":"AUD","in_stock":true},{"title":"42mm Unmounted","offer_id":42156308332613,"sku":"8h11bs","price":150.0,"currency_code":"AUD","in_stock":true},{"title":"50 x 50mm Unmounted","offer_id":42156308365381,"sku":"8h00rd","price":225.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Astronomik_L-2-UV-IR-Block_1_25-Inch.jpg?v=1731714320"},{"product_id":"astronomik-l-3-uv-ir-block-filter","title":"Astronomik L-3 UV-IR Block Filter","description":"\u003cp\u003eAstronomik now offers you a range of three different UV+IR blockers as Luminance filters. The different spectral window of each new Luminance filters is designed to tune your setup to get the sharpest image from any optical design and any camera.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003eThe Luminance channel is probably the most important for a great final image! You want as much signal as possible so the filter should have the highest transmission possible with a wide spectral bandpass. This combination provides the greatest sensitivity and gives you the highest photon counts on your pixels. While the high transmission level is a great aspect of the new Astronomik Luminance filters, not all optical instruments or additional optical elements like correctors, field-flatteners or reducers, have perfect colour correction so it can be the width of the spectral band pass of  the Luminance filter that can cause problems. A band pass that is too wide will allow the transmission of incompletely focused light (Chromatic aberration), making stars appear soft or bloated. In such cases image processing can become difficult, so having a slightly narrowed spectral window in your Luminance filter can reduce or eliminate this damaging effect.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eTo give you all the tools to gather the best data possible \u003c\/span\u003e\u003cstrong\u003ewe have expanded our line of Luminance filters\u003c\/strong\u003e\u003cspan\u003e: Now you can select a Luminance filter perfectly matched to the kind of telescope you use, to get the highest signal and sharpest image for the Luminance channel!\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDepending on the color correction of your scope you may use a wider spectral window for the Luminance data. The L1 filter has the widest spectral window, the L2 is about the same as our current L-Filter and the L3 is much narrower.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIf you use an optical system that is completely free of any chromatic aberration you should get an L1 filter for your setup. For general use the L2 filter is well suited to most optical systems with a corrector, flattener or reducer in the optical train while the L3 filter is designed for users of refractors with a less-than-perfect color correction and in combination with the new Deep-Sky RGB filters, the L3 filter will minimise the problem of bluish halos around stars.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe transmission curve characteristics and coatings on the new Luminance filters have been designed and engineered in such a way that no halos or reflections will be visible. Even with bright stars in the field of view you will be able to reveal the faintest structures in nebulas or galaxies.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eLike all Astronomik Filters, the new Luminance filters are made using an extremely durable and scratch resistant coating, deposited on the finest polished optical substrate, which is free of any striae or internal strains. All substrates are made to exactly the same thickness, so all of our filters are parfocal.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eAdditional note for observers working under light polluted skies:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIf your observing site suffers from light pollution you should try to use our CLS-CCD as a replacement for the Luminance filter. The transmission curve of the CLS-CCD will give you approximately the same amount of energy in all three colour channels while blocking nearly all unwanted artifical light pollution. Customers who replaced the Lx filter with the CLS-CCD are amazed by the increased quality of their data. This small change gives you the opportunity to take much deeper images from your current observing site.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/AlleLxFilter_V2.jpg?v=1731712853\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25 inch (M28\/5)","offer_id":42156310593605,"sku":"8h00pb","price":140.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch (M48)","offer_id":42156310626373,"sku":"8h00pm","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS APS-C Clip","offer_id":42156310659141,"sku":"8h00sl","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"Cannon XT EOS APS-C Clip","offer_id":42156310691909,"sku":"8h00mx","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS XL Clip","offer_id":42156310724677,"sku":"8h00sw","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS R XL Clip","offer_id":42156310757445,"sku":"8h11gg","price":265.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS M Clip","offer_id":42156310790213,"sku":"8h00t5","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"Sony alpha 7 Clip","offer_id":42156310822981,"sku":"8h00xt","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon XL Clip","offer_id":42156310855749,"sku":"8h11c5","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z XL Clip","offer_id":42156310888517,"sku":"8h11l1","price":265.0,"currency_code":"AUD","in_stock":true},{"title":"Pentax K-1 Clip","offer_id":42156310921285,"sku":"8h11fc","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"T-Mount (M42x075)","offer_id":42156310954053,"sku":"8h00rp","price":210.0,"currency_code":"AUD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":42156310986821,"sku":"8h00sa","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"31mm","offer_id":42156311019589,"sku":"8h00px","price":150.0,"currency_code":"AUD","in_stock":true},{"title":"36mm","offer_id":42156311052357,"sku":"8h00qi","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"50mm","offer_id":42156311085125,"sku":"8h00qt","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"M49","offer_id":42156311117893,"sku":"8h00v5","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"M52","offer_id":42156311150661,"sku":"8h00v6","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"M55","offer_id":42156311183429,"sku":"8h00v7","price":440.0,"currency_code":"AUD","in_stock":true},{"title":"M58","offer_id":42156311216197,"sku":"8h00v8","price":440.0,"currency_code":"AUD","in_stock":true},{"title":"M62","offer_id":42156311248965,"sku":"8h00v9","price":450.0,"currency_code":"AUD","in_stock":true},{"title":"M67","offer_id":42156311281733,"sku":"8h00va","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"M72","offer_id":42156311314501,"sku":"8h00vb","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"M77","offer_id":42156311347269,"sku":"8h00vc","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"27mm Unmounted","offer_id":42156311380037,"sku":"8h00o6","price":115.0,"currency_code":"AUD","in_stock":true},{"title":"42mm Unmounted","offer_id":42156311412805,"sku":"8h11bt","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"50 x 50mm Unmounted","offer_id":42156311445573,"sku":"8h00re","price":280.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Astronomik_L-3-UV-IR-Block_1_25-Inch.jpg?v=1731715062"},{"product_id":"optolong-l-para-2-inch","title":"Optolong L-Para 2 inch","description":"\u003cp\u003eThe Optolong L-Para is a dual narrowband 10nm light pollution filter, specifically designed to filter out unwanted mercury, sodium, and LED light pollution emissions and enhance the detection of nebulae emission lines with a transmittance rate of over 85% and a 10nm FWHM for both OIII (500.7nm) and H-Alpha (656.3nm). It offers superior contrast and anti-halo effects for capturing detailed and vibrant nebulae images.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eBroad Compatibility:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA dual narrowband filter suitable for all telescope systems, adaptable to fast optics (focal ratios of F2, F2.8, F3.2, F4) as well as various standard\/normal focal ratio telescopes. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eLight Pollution Resistance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEffectively cuts off emission lines from mercury lamps, sodium lamps, LEDs, and other light pollution sources, making it applicable to Bortle Scale1- 7 dark skies. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eHigh Transmission Rate:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIn systems with a focal ratio of F2 and above, the transmittance of nebula emission lines OIII and Ha exceed 85%, resulting in higher imaging efficiency. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eExcellent Contrast:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe high transmittance of nebula emission lines (OIII \u0026amp; Ha) combined with deep cut-off of light pollution bands significantly improves image contrast and detail richness. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAnti-Halo Characteristics:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe design has undergone several round of optimizations and many times of repeated testing ,resulting in a marked improvement in anti-halo performance, enhancing the capture of bright stars.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOptolong L-Para is a brand new dual narrowband 10nm light pollution filter. The FWHM of L-Para is 10nm for OIII (500.7nm) and H-Alpha (656.3nm) respectively. The transmittance of nebulae emission lines at are both greater than 85% in system with focal ratios of F2 and above. It effectively filters out mercury lamp, sodium lamp, and LED light pollution emission lines. At the same time, it has excellent contrast and anti-halo characteristics, allowing you to capture detailed and vivid nebula images. L-Para is suitable for both normal optical systems and fast optical systems, such as RASA and Hyperstar systems. Even when light is incident at an oblique angle, it can still maintain high transmission rates to provide you with a clear and precise shooting experience.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/9b96104f725faacefa9ded926bfab8da.png?v=1734564754\" width=\"555\" height=\"364\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/ec92b95b51a57afdfb563adfcf710c88.png?v=1734564755\" width=\"555\" height=\"197\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/2700143340459da0e3aa3e900c9c60f4.png?v=1734564755\" width=\"555\" height=\"203\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":42223738945605,"sku":"","price":455.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/OptolongL-Para_0001_5.jpg?v=1734563445"},{"product_id":"optolong-uv-ir-cut","title":"Optolong UV\/IR Cut","description":"\u003cp\u003e\u003cspan\u003eOptolong UV\/IR Cut filter is designed for ultraviolet and infrared wavelength blocking to improve sharpness of the image as most of the optics are designed for the visible spectrum, because it’s very difficult to create a lens with the same focal point for the visible and IR spectrum.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt is used on a digital camera and the video, which do not have an IR protection filter toward an image sensor or were remodeled. This is important because unfiltered CCD and CMOS sensors are extremely susceptible to UV and IR rays just outside the visible spectrum that can have a very negative impact on image quality.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMain Use and Performance\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSuitable for color CMOS and CCD cameras and modified DSLRs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUse with monochrome CCD for astrophotography.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAvailable to assist in focusing.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAct as an outstanding dust shield, which prevents the possibility of dust settling on the lens during long time exposure.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e\u003cu\u003eWARNING: \u003c\/u\u003e\u003c\/strong\u003eThe filters of Optolong are not designed for sun observation. 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By pairing traditional dual-narrowband (Ha \u0026amp; OIII) concepts with a unique \u003cstrong data-start=\"412\" data-end=\"440\"\u003e“Ha \u0026amp; OIII + SII \u0026amp; OIII”\u003c\/strong\u003e approach, L-Synergy overcomes the usual limitations of colour cameras and makes Hubble-Palette–style imaging accessible to everyone.\u003c\/p\u003e\n\u003cp data-start=\"575\" data-end=\"851\"\u003eWith this filter, you can produce deep, high-contrast SHO-like images of emission nebulae using your existing colour camera—no additional SHO filters or monochrome upgrade required. It’s an affordable way to achieve professional-level results even under bright suburban skies.\u003c\/p\u003e\n\u003chr data-start=\"853\" data-end=\"856\"\u003e\n\u003ch3 data-start=\"858\" data-end=\"898\"\u003e\u003cstrong data-start=\"862\" data-end=\"898\"\u003eWhy Choose the L-Synergy Filter?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"900\" data-end=\"1173\"\u003eThe L-Synergy is a \u003cstrong data-start=\"919\" data-end=\"950\"\u003edual 7 nm narrowband filter\u003c\/strong\u003e engineered for telescopes with an \u003cstrong data-start=\"985\" data-end=\"1015\"\u003ef\/ratio of f\/3.3 or slower\u003c\/strong\u003e. Years of optical refinement have produced a design that suppresses bright star halos while delivering extremely high transmission in the key emission bands.\u003c\/p\u003e\n\u003cul data-start=\"1175\" data-end=\"1772\"\u003e\n\u003cli data-start=\"1175\" data-end=\"1354\"\u003e\n\u003cp data-start=\"1177\" data-end=\"1354\"\u003e\u003cstrong data-start=\"1177\" data-end=\"1213\"\u003eSelective Narrowband Performance\u003c\/strong\u003e\u003cbr data-start=\"1213\" data-end=\"1216\"\u003eTransmits only the \u003cstrong data-start=\"1237\" data-end=\"1256\"\u003eOIII (500.7 nm)\u003c\/strong\u003e and \u003cstrong data-start=\"1261\" data-end=\"1279\"\u003eSII (672.4 nm)\u003c\/strong\u003e nebula emission lines, rejecting unwanted wavelengths and light pollution.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1356\" data-end=\"1589\"\u003e\n\u003cp data-start=\"1358\" data-end=\"1589\"\u003e\u003cstrong data-start=\"1358\" data-end=\"1402\"\u003eExceptional Contrast and Signal-to-Noise\u003c\/strong\u003e\u003cbr data-start=\"1402\" data-end=\"1405\"\u003eBy isolating the oxygen and sulfur signals, the filter produces a darker background sky and dramatically improves contrast—especially valuable in heavily light-polluted environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1591\" data-end=\"1772\"\u003e\n\u003cp data-start=\"1593\" data-end=\"1772\"\u003e\u003cstrong data-start=\"1593\" data-end=\"1622\"\u003eLight-Pollution Resistant\u003c\/strong\u003e\u003cbr data-start=\"1622\" data-end=\"1625\"\u003eFilters out the vast majority of urban skyglow, allowing astrophotographers to capture clean, detailed nebula structure from almost any location.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1774\" data-end=\"1777\"\u003e\n\u003ch3 data-start=\"1779\" data-end=\"1801\"\u003e\u003cstrong data-start=\"1783\" data-end=\"1801\"\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1803\" data-end=\"2087\"\u003eL-Synergy is precision-engineered based on the spectral behaviour of emission nebulae and common light-pollution sources. Its carefully tuned passbands maintain consistently high transmission in both SII and OIII, ensuring accurate colour capture and high-quality data for processing.\u003c\/p\u003e\n\u003cp data-start=\"2089\" data-end=\"2302\"\u003eThe result: a powerful, easy-to-use narrowband solution that unlocks deep-sky imaging performance far beyond what typical colour cameras can achieve, giving more astrophotographers access to true SHO-style imaging.\u003c\/p\u003e\n\u003cp data-start=\"2089\" data-end=\"2302\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/lsyngy.jpg?v=1763165802\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":43990764322885,"sku":"OPT-LSYN","price":499.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/b6add4f4424b483367d04642ea35c4bd.jpg?v=1763166226"},{"product_id":"optolong-l2-dual-combo-set","title":"Optolong L2 Dual-Combo Set","description":"\u003ch3 data-end=\"145\" data-start=\"106\"\u003eOptolong L2 Dual-Combo Filter Set\u003c\/h3\u003e\n\u003cp data-end=\"559\" data-start=\"147\"\u003eThe Optolong L2 Dual-Combo Set includes two premium dual-narrowband filters, L-eXtreme and L-Synergy, designed for colour-camera astrophotography. Compatible with telescopes f\/3.3 and slower, this set allows users to capture Hubble Palette deep-sky images without switching to a monochrome camera or buying a full three-filter SHO set. It provides professional-level narrowband imaging with minimal investment.\u003c\/p\u003e\n\u003cp data-end=\"787\" data-start=\"561\"\u003eThe \u003ca href=\"https:\/\/bintel.com.au\/products\/optolong-l-extreme-filter\" title=\"Optolong L-extreme\"\u003eL-eXtreme\u003c\/a\u003e transmits OIII (500.7 nm) and Hα (656.3 nm), blocking unwanted light-pollution wavelengths to deliver bright nebula details with high contrast. Years of refinement optimise performance and reduce bright star halos.\u003c\/p\u003e\n\u003cp data-end=\"1004\" data-start=\"789\"\u003eThe \u003ca href=\"https:\/\/bintel.com.au\/products\/optolong-l-synergy-filter\" title=\"Optologn L-Synergy\"\u003eL-Synergy\u003c\/a\u003e transmits OIII (500.7 nm) and SII (672.4 nm) with high efficiency while rejecting other wavelengths. It minimises light pollution effects and preserves nebula detail, producing clean data for processing.\u003c\/p\u003e\n\u003cp data-end=\"1225\" data-start=\"1006\"\u003eThe combination of these filters allows colour-camera users to achieve Hubble Palette imaging efficiently. It enhances nebula structure, improves contrast, and enables richer colour separation in light-polluted skies.\u003c\/p\u003e\n\u003cp data-end=\"1495\" data-start=\"1227\"\u003eThe filters are engineered to preserve the distinctive colours of nebulae while filtering out most light pollution. Their tuned transmission profiles ensure strong signal in the target emission lines and high signal-to-noise performance for detailed deep-sky images.\u003c\/p\u003e\n\u003cp data-end=\"1634\" data-start=\"1497\"\u003eThis set is ideal for astrophotographers using colour cameras who want professional-quality narrowband imaging with existing equipment.\u003c\/p\u003e\n\u003cp data-end=\"1634\" data-start=\"1497\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/19ce3d5664886f96373832d4be8e8830.jpg?v=1763181148\"\u003e\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":43990999793733,"sku":"OPT-L2DC","price":919.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/625ce0ff357eae9d0cd02396e639a230.jpg?v=1763180847"},{"product_id":"tmb-pro-series-uv-ir-cut-imaging-filter","title":"TMB Pro Series UV\/IR Cut Imaging Filter","description":"\u003ch3 data-start=\"166\" data-end=\"493\"\u003eTMB Pro Series UV\/IR Cut Imaging Filter\u003c\/h3\u003e\n\u003cp data-start=\"166\" data-end=\"493\"\u003eThe TMB Pro Series UV\/IR Cut Imaging Filter is designed to block ultraviolet (UV) and infrared (IR) light, allowing only visible wavelengths to reach your camera sensor. Most telescope optics are optimised for visible light, so blocking UV and IR helps produce sharper, more accurate images with improved contrast and detail.\u003c\/p\u003e\n\u003cp data-start=\"495\" data-end=\"809\"\u003eThis filter is ideal for colour CMOS and CCD cameras, and can also be used with monochrome cameras. In addition, it serves as a protective barrier for your imaging equipment, reducing the risk of dust settling on your optics during long exposure sessions.\u003c\/p\u003e\n\u003cp data-start=\"811\" data-end=\"1064\"\u003eWith its robust optical design and high-quality coatings, the TMB Pro Series UV\/IR Cut Filter ensures maximum light transmission in the visible spectrum while minimising unwanted wavelengths, making it a simple but essential tool for astrophotography.\u003c\/p\u003e","brand":"Coken","offers":[{"title":"1.25 inch","offer_id":44577617051717,"sku":"TA404","price":29.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Untitleddesign_57.jpg?v=1771385997"},{"product_id":"bintel-pro-series-duo-band-filter","title":"TMB Pro Series Duo-Band Nebula Imaging Filter","description":"\u003ch3 data-start=\"125\" data-end=\"176\"\u003eTMB Pro Series Duo-Band Nebula Imaging Filter\u003c\/h3\u003e\n\u003cp data-start=\"209\" data-end=\"921\"\u003eThe TMB Pro Series Duo-Band Nebula Imaging Filter is designed for astrophotographers using colour cameras who want to capture emission nebulae in stunning detail without investing in a full mono camera setup. This dual-band filter works by letting through only two specific colours of light, Hα (656 nm) and OIII (500 nm), which are the wavelengths most emitted by many nebulae. By blocking most other light, including light pollution and moonlight, it makes faint nebulae stand out more clearly in your images. It works especially well on well-known targets such as the Orion Nebula, Carina Nebula, Lagoon Nebula, and Trifid Nebula, but will also enhance contrast on virtually any emission nebula across the sky.\u003c\/p\u003e\n\u003cp data-start=\"923\" data-end=\"1290\"\u003eIdeal for One-Shot Colour (OSC) cameras, the filter provides an easy way to explore narrowband imaging while retaining natural colour. Its precision optical design features finely polished Schott glass, double-sided anti-reflection coatings, and a robust anodised aluminium cell, ensuring excellent light transmission, minimal reflections, and long-term durability.\u003c\/p\u003e\n\u003cp data-start=\"1292\" data-end=\"1529\"\u003eAvailable in standard 1.25” and 2” sizes, the TMB Pro Series Duo-Band Filter is compatible with almost all standard colour cameras and filter wheels, making it a practical solution for deep sky imaging in urban or light-polluted environments.\u003c\/p\u003e\n\u003cp data-start=\"1220\" data-end=\"1239\"\u003e\u003cstrong data-start=\"1220\" data-end=\"1237\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1240\" data-end=\"1596\"\u003e\n\u003cli data-start=\"1240\" data-end=\"1291\"\u003e\n\u003cp data-start=\"1242\" data-end=\"1291\"\u003eDual bandpass for Hα (656 nm) and OIII (500 nm)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1292\" data-end=\"1333\"\u003e\n\u003cp data-start=\"1294\" data-end=\"1333\"\u003eEnhances contrast of emission nebulae\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1334\" data-end=\"1404\"\u003e\n\u003cp data-start=\"1336\" data-end=\"1404\"\u003eReduces interference from moonlight and artificial light pollution\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1405\" data-end=\"1464\"\u003e\n\u003cp data-start=\"1407\" data-end=\"1464\"\u003eHigh-quality Schott glass with anti-reflection coatings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1465\" data-end=\"1541\"\u003e\n\u003cp data-start=\"1467\" data-end=\"1541\"\u003eRobust CNC-machined anodised aluminium cell with laser-engraved markings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1542\" data-end=\"1596\"\u003e\n\u003cp data-start=\"1544\" data-end=\"1596\"\u003eStandard 1.25” or 2” sizing for wide compatibility\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Coken","offers":[{"title":"1.25 inch","offer_id":44577617772613,"sku":"TA407","price":99.0,"currency_code":"AUD","in_stock":true},{"title":"2.0 inch","offer_id":44577617838149,"sku":"TA407-2","price":199.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Untitleddesign_58.jpg?v=1771386053"}],"url":"https:\/\/bintel.com.au\/collections\/light-pollution-filters-for-colour-cameras.oembed","provider":"The Binocular and Telescope Shop","version":"1.0","type":"link"}