{"product_id":"askar-colour-magic-ultra-e1-e2-duo-narrowband-filter","title":"Askar Colour Magic Ultra E1 \u0026 E2 Duo Narrowband Filter","description":"\u003ch1\u003eAskar Colour Magic Ultra E1 \u0026amp; E2 Duo Narrowband Filter\u003c\/h1\u003e\n\u003cp class=\"e_text-8 s_title response-transition\"\u003eAskar newly launched ColourMagic Ultra E1 2” Duo-narrowband Filter, is a professional astrophotography tool specifically designed for deep-sky imaging. The Ultra E1 filter, as the name suggests, has the \"Ultra\" halo control capability. During the filter research and development process, we made a special design optimization for Ultra E1. And in the end, it becomes a special filter with one bandwidth at 3nm and the other bandwidth outside 3nm.\u003c\/p\u003e\n\u003cp class=\"e_text-8 s_title response-transition\"\u003eColourMagic Ultra E 2\" Duo-narrowband filter, is a professional astrophotography tool specifically designed for deep-sky imaging. Except for the traditional Hα+OⅢ Duo-narrowband filter, we innovatively introduced another filter--SⅡ+OⅢ. The ColourMagic Ultra E2 filter is a SII+OIII filter.\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/6402603c-690d-4fa4-a926-7cf4f529e1d3_1024x1024.jpg?v=1749844738\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_0 p_gridCell response-transition\"\u003e\n\u003cdiv class=\"ie_fimg\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"ie_line\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"reset_style\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eAskar Ultra E1 duo-band filter has an extremely narrow bandwidth, and an ultra-high transmittance over 85% at its center wavelength (500.7nm and 656.6nm). It can effectively eliminate the influence of light pollution. Even if you are in an area seriously affected by light pollution, the pictures taken with the ColourMagic Ultra E 2” Duo-narrowband Filter are still very good.  It is so practical and efficient that you can get astronomical images of high quality with just one duo-band filter and an ordinary astronomical colour camera.\u003c\/p\u003e\n\u003cp\u003eThe ColourMagic Ultra E 2” Duo-narrowband Filter is ideal for photographing emission nebulae, planetary nebulae or supernova remnants. The highly narrow bandwidth of the filter effectively blocks out the effects of light pollution or other distracting factors such as night glow.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/9d0fe05c-f55f-4195-bca5-a696f3b16b83.jpg?v=1749844804\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe Ultra E filter, as the name suggests, has the \"Ultra\" halo control capability. During the filter research and development process, we made a special design optimization for Ultra E. And in the end, it became a special filter with one bandwidth at 3nm and the other bandwidth outside 3nm.\u003c\/p\u003e\n\u003cp\u003eWhen shooting deep-sky galaxies with colour cameras, a duo-narrowband filter in the Hα and OⅢ bands is often used; whereas with a mono camera, a narrowband filter in the Hα, SⅡ and OⅢ bands is often used, leaving users with colour cameras missing one band of nebula detail. This can be compensated by using ColourMagic Ultra E2 Duo-narrowband filter (OⅢ+SⅡ) mentioned above.\u003c\/p\u003e\n\u003cp\u003eColourMagic Ultra E2 Duo-narrowband filter (OⅢ+SⅡ) has an ultra-high transmittance of over 85% at its center wavelength (500.7nm and 672nm). It can effectively enhance the contrast of your pictures, making it easier to display the details of the stars that otherwise are fairly difficult to spot. In areas with very serious light pollution, this filter can also selectively filter light pollution and cluttered signals through the emission lights of the nebula to achieve the ideal shooting effect.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ch2\u003eColour Magic Ultra E1 OIII \u0026amp; Hα\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eE1 General information table\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable width=\"84.20%\" cellspacing=\"0\" align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eFWHM\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003e HA:3.7nm±0.3nm\/OIII：4.0±0.3nm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eCWL\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003e500.7nm \u0026amp; 656.6nm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003ePeak transmittance\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003e85%\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003e1.85 ± 0.05mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eBarrier property\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003e≥OD5 @ 200-1100nm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eSurface finish\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003e60\/40\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eParallelism\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003e30″\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"text-align: left;\"\u003e \u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eE1 Parameter Diagram\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/a6711c5e-d7ec-4aa7-85b6-01a3f41b0290_1024x1024.jpg?v=1749845010\"\u003e\u003c\/div\u003e\n\u003ch2\u003eColour Magic Ultra E2 SII \u0026amp; OIII\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eE2 General information table\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable width=\"84.20%\" cellspacing=\"0\" align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eFWHM\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003e SII:4.0±0.3nm\/OIII：3.7nm±0.3nm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eCWL\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003e500.7nm \u0026amp; 672nm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003ePeak transmittance\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003e85%\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003e1.85 ± 0.05mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eBarrier property\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003e≥OD5 @ 200-1100nm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eSurface finish\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003e60\/40\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eParallelism\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003e30″\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eE2 Parameter Diagram\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/e06bbb0c-04fd-46d7-b77e-af95b2131ba6_1024x1024.jpg?v=1749845112\"\u003e\u003c\/div\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eE1 OIII \u0026amp; Hα 2'' Filter \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eor\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eE2  SII \u0026amp; OIII 2'' Filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eor \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eE1 + E2 2'' Filter Kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp\u003eAskar Warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Askar","offers":[{"title":"Colour Magic E1 (OIII \u0026 Hα)","offer_id":46842191380709,"sku":"ASK-CM-E1","price":859.0,"currency_code":"CAD","in_stock":true},{"title":"Colour Magic E2 (SII \u0026 OIII)","offer_id":46842191413477,"sku":"ASK-CM-E2","price":859.0,"currency_code":"CAD","in_stock":true},{"title":"Colour Magic E1 + E2 Filter Package","offer_id":46842191446245,"sku":"ASK-CM-E1+E2","price":1679.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/E1_E2.webp?v=1749845786","url":"https:\/\/istronomyplus.com\/products\/askar-colour-magic-ultra-e1-e2-duo-narrowband-filter","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}