{"product_id":"used-antlia-triband-rgb-ultra-filter-4","title":"Used Antlia Triband RGB Ultra Filter - 2\"","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e:\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eThis is a used Antlia Triband RGB 2\" filter in excellent condition. \u003c\/span\u003e\u003cspan\u003eThe optics are clean, the body is unmarked.  This comes in a jewel box.  \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e(Any dust you see in the photos is removable - it seems that these filters develop an electrostatic charge such that the dust in the air is just attracted to the filter.)  \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003ch4\u003eDescription\u003c\/h4\u003e\n\u003ch3\u003eAntlia Triband RGB Ultra Filter\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eIt is designed for light pollution suppression for OSC and Mono cameras. The spectral \u003c\/span\u003e\u003cspan\u003edesign selected the most substantial information in the RGB bands, which makes Antlia Triband RGB Ultra Filter possible to shoot over 90% of deep sky objects, in addition to its excellent performance on emission nebula, different from other ultra-narrowband filters, it is able to capture galaxies, reflection nebulae, and star clusters from a Bortle 8 location to Bortle 1 while presenting more balanced RGB colors in your images. Also, it has a broad \u003c\/span\u003e\u003cspan\u003ebandpass designed to cope with faster optics up to the f\/2 focal ratio.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe quantum efficiency of the B channel in current CMOS sensors is often significantly lower than that of R and G channels. \u003c\/span\u003e\u003cspan\u003eAntlia team was to provide a filter with a more realistic color balance for astrophotography from light polluted locations. \u003c\/span\u003e\u003cspan\u003eThe problem with the low blue wavelength efficiency becomes apparent when imaging reflection nebulae and blue stars. In \u003c\/span\u003e\u003cspan\u003eCMOS sensors, the blue wavelengths also contain contribution from the stronger green spectrum, thereby affecting the balance \u003c\/span\u003e\u003cspan\u003eof the blue colours. Many popular imaging objects contain reflection nebula with faint blue hues such the central part of\u003c\/span\u003e\u003cspan\u003eNGC2264. Therefore, we designed Antlia Triband RGB Ultra Filter that not only retains the HSO emission signal but also\u003c\/span\u003e\u003cspan\u003eincreases the amount of Luminous flux of the blue B channel. By improving the blue wavelength transmission, the color of the\u003c\/span\u003e\u003cspan\u003ephoto is better balanced and easier to manage in post processing.\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eApplication and Performance:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eIt is workable to shoot galaxies, reflection nebulae and star clusters.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eRefined coating process makes the Triband RGB Ultra filters with excellent halo suppression and improved\u003c\/span\u003e\u003cspan\u003esignal-to-noise performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eIt has been specifically designed for balanced color transmission using Antlia's experience in spectrum design.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eThe balanced transmission allows the minimal color cast to broadband emission objects such as stars, galaxies, and\u003c\/span\u003e\u003cspan\u003eglobular clusters.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eThe Triband RGB Ultra can be used with nearly all systems as fast as f\/2 with minimal loss of efficiency or shifts in\u003c\/span\u003e\u003cspan\u003espectral response.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eWhen shooting LRGB with mono cameras, unless you are wanting to image LDN (dark nebulae) the Triband RGB Ultra\u003c\/span\u003e\u003cspan\u003ecan be used as a luminance filter replacement for objects such as nebulae and galaxies to improve contrast and signal to\u003c\/span\u003e\u003cspan\u003enoise ratio.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eThe Triband RGB Ultra is able to better isolate the H-alpha, O3 and blue spectrum from the background light pollution.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eFor visual use, Triband RGB Ultra filter ensures the high transmittance of the HSO emission line and can be used for \u003c\/span\u003e\u003cspan\u003eobserving deep-sky objects with large-diameter telescopes.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eThe filter provides excellent flexibility and compatibility with both OSC and Mono camera systems. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eIt facilitates the imaging of most astronomical objects using all optical configurations down to f\/2 focal ratio.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSize Available: 2’’ mounted\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cimg src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAg0IKCnAYo_MyQ7AEwngs4kAM.jpg\" alt=\"1234.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cimg src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAg_4KCnAYowsXOywcwxQk4iAY.jpg\" alt=\"Triband RGB Ultra Spectrum Curve.jpg\"\u003e\u003c\/p\u003e","brand":"Antlia","offers":[{"title":"Default Title","offer_id":49453028999427,"sku":"U2608-MS-ANTLIA-RGB","price":125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1979\/5379\/files\/48d70905-15cd-467e-9806-0c3acfdd679b_0125c7c6-9177-47c3-b666-ba12c9bc4d34.jpg?v=1786828725","url":"https:\/\/milehighastro.com\/products\/used-antlia-triband-rgb-ultra-filter-4","provider":"Mile High Astronomy","version":"1.0","type":"link"}