{"product_id":"antlia-tri-band-ultra-ii-rgb-filter-2-rgb-trib-ultra-ii-2","title":"Antlia Tri-Band Ultra II RGB Filter - 2\" - RGB-TRIB-ULTRA-II-2","description":"\u003ch3 style=\"text-align: center;\"\u003e\u003cspan\u003eAntlia Tri-Band Ultra II RGB Filter - 2\" Mounted\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe Antlia Tri-Band Ultra II RGB Filter 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 \u003cem\u003eemission nebula\u003c\/em\u003e, different from other ultra-narrowband filters, it is able to capture \u003cem\u003egalaxies, reflection nebulae, and star clusters\u003c\/em\u003e 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\u003eThe Antlia team was to produce 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, Antlia designed 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\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eApplication and Performance: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eYou can use the Antlia Tri-Band RGB Filter to image galaxies, reflection nebulae and star clusters. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt's refined coating process produces a filter that has excellent halo suppression and improved \u003c\/span\u003e\u003cspan\u003esignal-to-noise performance. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Tri-Band Ultra Filter 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\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\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\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\u003eThe Triband RGB Ultra is able to better isolate the H-alpha, OIII and blue spectrum from the background light pollution. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\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\u003eThe filter provides excellent flexibility and compatibility with both OSC and Mono camera systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\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\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/Tri-Band_Specs.jpg?v=1740424903\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Antlia","offers":[{"title":"Default Title","offer_id":41674798891121,"sku":"ATL-RGB-TRIB-ULTRA-II-2","price":163.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/RGB-TRIB-ULTRA-II-2.jpg?v=1776459150","url":"https:\/\/khanscope.com\/fr-fr\/products\/antlia-tri-band-ultra-ii-rgb-filter-2-rgb-trib-ultra-ii-2","provider":"Khan Scope Centre","version":"1.0","type":"link"}