{"product_id":"antlia-alp-t-dual-band-5nm-filter","title":"Antlia ALP-T Dual Band 5nm Ha \u0026 OIII \"Gold\" Filter","description":"\u003ch2 data-mce-fragment=\"1\"\u003eAntlia ALP-T Dual Band 5nm Ha\u0026amp;OIII Filter\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003e***** Antlia FAMOUS filter known as Gold Filter! *****\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe Antlia ALP-T dual band 5nm filter is a dual line-pass filter which was designed to be used primarily with one-shot color (OSC) cameras such as DSLR’s or astronomical OSC cameras. It can also be used as a narrowband filter for monochrome cameras to save imaging time. The advanced multi-coatings on our ALP-T ultra dual band filter effectively isolates the red Ha and the blue-green OIII lines light from emission nebulae, with almost total suppression of optical density (OD)4.5 on unwanted wavelengths from light pollution, moonlight, and airglow. The result is that our ALP-T dual band 5nm filter creates a superior signal-to-noise ratio and better contrast in your images.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\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 data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eApplication and Performance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eEngineered specifically for use with DSLR, CMOS, and CCD color cameras\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSuppression of optical density (OD)4.5 on unwanted wavelengths adds signal-to-noise\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eExtremely steep bandpass edges minimize internal reflections\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eIdeal flat-top and moderate bandpass reducing spectrum down shifts\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\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 data-mce-fragment=\"1\"\u003eDesigned to suppress artificial lighting from Bortle scale 1 to Bortle scale 8\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eNear IR (NIR) is blocked up to 1100nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eNot Recommended:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSolar imaging\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eNight visual observation\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eNot Permitted:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eDO NOT LOOK AT THE SUN WITH THIS FILTER\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSerious eye damage will result if you fail to observe the warning\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAdditional independent tests and reviews are available here, please credit the photographer’s names if you use their images on your website.\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-fragment=\"1\" data-mce-style=\"text-align: center;\"\u003e\u003cimg height=\"381\" width=\"579\" src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAgvJCijQYo_JyH3AQw3As43Qc.jpg\" alt=\"IC434_ALP_T+.jpg\" style=\"float: none;\" data-mce-fragment=\"1\" data-mce-style=\"float: none;\" data-mce-src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAgvJCijQYo_JyH3AQw3As43Qc.jpg\"\u003e\u003c\/div\u003e\n\u003cp data-mce-fragment=\"1\"\u003eTarget: IC434 – Horse Head and Flame Nebulae\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Telescope: Skywatcher 130mm F5 w\/MPCC\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Mount: Losmandy G11\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Camera : IMX571 26000KPA\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Filter: Antlia ALP-T Dual Band 5nm Filter 2”\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Exposure info: 300s X 24\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Bortle scale 5\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eCopyright: Hyunsu Lee (South Korea)\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-fragment=\"1\" data-mce-style=\"text-align: center;\"\u003e\u003cimg height=\"352\" width=\"527\" src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAg1JKijQYogYbvvQIw3As46gc.jpg\" alt=\"NGC2244_LIGHT_3+.jpg\" style=\"float: none;\" data-mce-fragment=\"1\" data-mce-style=\"float: none;\" data-mce-src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAg1JKijQYogYbvvQIw3As46gc.jpg\"\u003e\u003c\/div\u003e\n\u003cp data-mce-fragment=\"1\"\u003eTarget: NGC2244 – Rosette Nebula\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Telescope: Skywatcher 130mm F5 w\/MPCC\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Mount: Losmandy G11\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Camera: IMX571 26000KPA\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Filter: Antlia ALP-T Dual Band 5nm Filter 2”\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Exposure info: 300s X 30\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Bortle scale 5\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eCopyright: Hyunsu Lee (South Korea)\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-fragment=\"1\" data-mce-style=\"text-align: center;\"\u003e\u003cimg height=\"348\" width=\"522\" src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAg85eijQYopMPmxwYw3As46gc.jpg\" alt=\"NGC 6960_Western Veil nebula+.jpg\" style=\"float: none;\" data-mce-fragment=\"1\" data-mce-style=\"float: none;\" data-mce-src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAg85eijQYopMPmxwYw3As46gc.jpg\"\u003e\u003c\/div\u003e\n\u003cp data-mce-fragment=\"1\"\u003eTarget: Western Veil nebula\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Telescope: Skywatcher 130mm F5 w\/MPCC\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Mount: Losmandy G11\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Camera: IMX571 26000KPA\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Filter: Antlia ALP-T Dual Band 5nm Filter 2”\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Exposure info: 300s X 7\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Bortle scale 5\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eCopyright: Hyunsu Lee (South Korea)\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-fragment=\"1\" data-mce-style=\"text-align: center;\"\u003e\u003cimg height=\"327\" width=\"513\" src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAg-5qijQYo-b6ohwIw3As4vQc.jpg\" alt=\"IC63_LIGHT+.jpg\" style=\"float: none;\" data-mce-fragment=\"1\" data-mce-style=\"float: none;\" data-mce-src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAg-5qijQYo-b6ohwIw3As4vQc.jpg\"\u003e\u003c\/div\u003e\n\u003cp data-mce-fragment=\"1\"\u003eTarget: IC63 – The Phantom of Cassiopeia\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Telescope: Skywatcher 130mm F5 w\/MPCC\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Mount: Losmandy G11\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Camera : IMX571 26000KPA\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Filter: Antlia ALP-T Dual Band 5nm Filter 2″\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Exposure info: 300s X 32\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Bortle scale 5\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eCopyright: Hyunsu Lee (South Korea)\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-fragment=\"1\" data-mce-style=\"text-align: center;\"\u003e\u003cimg height=\"354\" width=\"529\" src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAgwp6ijQYo1KLR4QEw3As46gc.jpg\" alt=\"betelgeuse+.jpg\" style=\"float: none;\" data-mce-fragment=\"1\" data-mce-style=\"float: none;\" data-mce-src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAgwp6ijQYo1KLR4QEw3As46gc.jpg\"\u003e\u003c\/div\u003e\n\u003cp data-mce-fragment=\"1\"\u003eTarget: Betelgeuse(Magnitude：0.5)\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Telescope: Skywatcher 130mm F5 w\/MPCC\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Mount: Losmandy G11\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Camera: IMX571 26000KPA\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e– Filter: Antlia ALP-T Dual Band 5nm Filter 2”\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eCopyright: Hyunsu Lee (South Korea) \u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable align=\"LEFT\" border=\"1\" width=\"585px\"\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%\"\u003e656.3nm\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\"\u003e500.7nm\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%\"\u003e90%\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 valign=\"top\" rowspan=\"1\" colspan=\"2\"\u003e≥OD4.5 @ 300-1100nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\"\u003eFilter Thickness\u003c\/td\u003e\n\u003ctd valign=\"top\" colspan=\"2\"\u003e2mm+\/-0.05mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\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\u003cstrong\u003e\u003cimg height=\"368\" width=\"580\" data-ll-status=\"loaded\" alt=\"Antlia ALP-T Dualband 5nm spectrum curve.jpg\" src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAg34KijQYowJrAHzDFCTiGBg.jpg\" class=\"need_fix lazyloaded\" data-mce-src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAg34KijQYowJrAHzDFCTiGBg.jpg\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eALP-T Filter\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"value\" data-mce-fragment=\"1\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp\u003eAntlia \u003cspan data-mce-fragment=\"1\"\u003e3-Years Against Delamination\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Antlia","offers":[{"title":"2\" Mounted","offer_id":43780770103525,"sku":"AF-ALP-T-2-HaOIII","price":539.0,"currency_code":"CAD","in_stock":true},{"title":"36mm Unmounted","offer_id":43780770136293,"sku":"AF-ALP-T-36-HaOIII","price":423.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/antlia-alp-t-dual-band-5nm-haandoiii-gold-filter-astronomy-plus-1.webp?v=1690488412","url":"https:\/\/istronomyplus.com\/products\/antlia-alp-t-dual-band-5nm-filter","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}