{"title":"Filtres Player One","description":"\u003cp\u003eLes filtres Player One couvrent l'imagerie du ciel profond, planétaire et solaire. La série S comprend des filtres en bande étroite Ha, OIII et SII de 7nm, un jeu LRGB, un UV\/IR-cut et des passe-infrarouge IR685nm et IR850nm.\u003c\/p\u003e\u003cp\u003eLa série E ajoute des filtres spécialisés comme le CH4 8nm pour les bandes de méthane des planètes géantes et l'UVenus pour Vénus. Pour les caméras couleur, le filtre bi-bande Anti-Halo PRO Ha\/OIII 2\" cible les nébuleuses en émission sous un ciel pollué.\u003c\/p\u003e","products":[{"product_id":"player-one-uv-ir-cut-s-series-filter","title":"Player One UV\/IR-Cut S-Series Filter - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCorrects Color Balance for Color Cameras\u003c\/li\u003e\n\u003cli\u003eBlocks Unwanted Ultraviolet (UV) and Infrared (IR) Light\u003c\/li\u003e\n\u003cli\u003eEnhances Contrast for Lunar and Solar Imaging\u003c\/li\u003e\n\u003cli\u003eHigh-Quality S-Series Optical Glass Substrate\u003c\/li\u003e\n\u003cli\u003eDurable Multi-Layer Composite Coatings\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" Filter Threading\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003ePlayer One UV\/IR-Cut S-Series Filter - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe Player One UV\/IR-Cut S-Series Filter is an essential tool for achieving accurate color and maximum sharpness in planetary, lunar, and solar astrophotography, designed to fit any standard 1.25\" eyepiece or accessory.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eRestoring True Color Balance with the 1.25\" S-Series Filter\u003c\/h3\u003e\n\u003cp\u003eModern color astronomy cameras, like the Player One Mars-C, have sensors that are highly sensitive to light beyond the visible spectrum. This sensitivity to ultraviolet (UV) and infrared (IR) light can cause color shifts, often resulting in a purple or magenta cast in your images and bloated, unfocused stars. The Player One UV\/IR-Cut filter solves this by selectively blocking these wavelengths, ensuring that only visible light reaches the sensor for images with natural, true-to-life color balance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA Critical Filter for High-Contrast Solar and Lunar Imaging\u003c\/h3\u003e\n\u003cp\u003eBeyond color correction, blocking unfocused IR radiation is critical for image sharpness. Strong infrared light, especially prevalent during solar and lunar imaging, can reduce image clarity and soften fine details. By adding this UV\/IR-Cut filter to your imaging train, you eliminate this source of low-contrast haze. This results in visibly sharper views of lunar crater rims, rilles, and the subtle details within solar sunspots and granulation (when used with a dedicated, safe solar filter).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy do I need the Player One UV\/IR-Cut filter for my color camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYour color camera's sensor can \"see\" ultraviolet and infrared light that your eyes cannot. This out-of-band light focuses at a different point than visible light, causing color fringing, bloated stars, and a loss of detail. The \u003cstrong\u003ePlayer One UV\/IR-Cut filter\u003c\/strong\u003e blocks this unwanted light, resulting in correct color balance and sharper images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Player One 1.25\" UV\/IR-Cut filter improve my images of Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. Planets like Jupiter and Saturn have distinct color zones that are washed out by infrared light. Using the \u003cstrong\u003ePlayer One UV\/IR-Cut filter\u003c\/strong\u003e will help render the Great Red Spot, cloud bands, and Cassini Division with more accurate color and higher contrast.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Player One UV\/IR-Cut S-Series filter for solar imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is highly recommended for solar imaging, but it is \u003cstrong\u003eNOT\u003c\/strong\u003e a standalone solar filter. You must use it in combination with a primary, professional-grade solar filter that covers the front of your telescope. The UV\/IR-Cut filter then serves as a secondary filter to further increase contrast by blocking excess IR that passes through the main filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this Player One filter necessary if I use a refractor telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. While apochromatic (APO) refractors are well-corrected for visible light, most are not designed to bring UV and IR light to the same focal plane. A UV\/IR-cut filter is therefore essential for any telescope type—refractor, reflector, or SCT—when imaging with a color camera that does not have a built-in IR-cut window.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Player One UV\/IR-Cut filter work in a 1.25\" filter wheel?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The \u003cstrong\u003ePlayer One UV\/IR-Cut S-Series filter\u003c\/strong\u003e is housed in a standard 1.25\" cell with male M28.5x0.6 threads, making it compatible with any standard 1.25\" filter wheel, filter drawer, or accessory that accepts threaded filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat's the difference between this Player One UV\/IR-Cut filter and a Luminance filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eBoth filters block UV and IR light. However, a Luminance (L) filter is specifically designed for monochrome imaging, with a precise bandpass engineered to match the focal point of a set of RGB filters. A standard UV\/IR-Cut filter, like this one from Player One, is designed for broadband color correction with a one-shot-color (OSC) camera and may have a slightly wider transmission window.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eUV\/IR-Cut (Luminance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eS-Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003ePlayer One UV\/IR-Cut S-Series Filter - 1.25\"\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eProtective Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/player-one-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003ePlayer One 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Player One","offers":[{"title":"Default Title","offer_id":51112144175389,"sku":"POA-UV-IR-CUT-125","price":31.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Player-One-UV-IR-CUT-1_25inch-Filter.jpg?v=1775160317"},{"product_id":"player-one-uv-ir-cut-anti-halo-filter-2","title":"Player One UV\/IR-Cut Anti-Halo Filter - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eBlocks unwanted Ultraviolet (UV) and Infrared (IR) wavelengths\u003c\/li\u003e\n\u003cli\u003eFeatures advanced anti-halo coatings to minimize reflections\u003c\/li\u003e\n\u003cli\u003eStandard 2\" filter cell with M48x0.75 threads\u003c\/li\u003e\n\u003cli\u003eMaximizes contrast and sharpens stars in color and monochrome imaging\u003c\/li\u003e\n\u003cli\u003eEssential for refractive and catadioptric telescopes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003ePlayer One UV\/IR-Cut Anti-Halo Filter - 2\"\u003c\/h2\u003e\n\u003cp\u003eThe Player One UV\/IR-Cut Anti-Halo Filter provides critical ultraviolet and infrared blocking in a standard 2\" threaded cell, using advanced coatings to eliminate halos around bright stars for cleaner, higher-contrast astronomical images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 2\" Filter for Sharper Stars and Higher Contrast\u003c\/h3\u003e\n\u003cp\u003eWhile your camera sensor is sensitive to a wide spectrum of light, most telescopes are only designed to bring visible light to a sharp focus. Out-of-focus UV and IR light creates a soft, low-contrast halo around stars, commonly known as \"star bloat,\" which degrades image sharpness. This 2\" filter blocks those unwanted wavelengths, ensuring only focused, visible light reaches the sensor.\u003c\/p\u003e\n\u003cp\u003eThe result is immediately apparent in your images: stars become tighter, finer details emerge in nebulae and galaxies, and the overall contrast of the image is significantly improved. It is an essential component for any imaging setup using a refractor, Schmidt-Cassegrain, or any other compound telescope design.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSuppressing Halos and Internal Reflections\u003c\/h3\u003e\n\u003cp\u003eBeyond simple UV\/IR blocking, the Player One filter incorporates multi-layer anti-reflection coatings specifically designed to combat halos. Halos are caused by bright starlight reflecting between the filter surface and the camera sensor cover glass. This filter's coatings disrupt these internal reflections, preventing distracting rings from forming around bright targets like Vega or Alnitak.\u003c\/p\u003e\n\u003cp\u003eThis anti-halo technology is particularly crucial for modern, highly-reflective CMOS sensors. By minimizing these artifacts at the source, you spend less time processing them out and achieve a cleaner final image straight from the camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePlayer One UV\/IR-Cut vs. Standard Luminance Filters\u003c\/h3\u003e\n\u003cp\u003eWhile both this filter and a standard Luminance (L) filter perform the same core function of blocking UV and IR light, the Player One Anti-Halo filter is engineered for a different challenge. Many basic L-filters can still produce noticeable halos and internal reflections when used with bright stars and sensitive modern sensors.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard L-Filter:\u003c\/strong\u003e Primarily focused on cutting UV\/IR wavelengths. It is effective for basic luminance data collection but may struggle with reflections on bright targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlayer One Anti-Halo Filter:\u003c\/strong\u003e Provides the same UV\/IR cut but adds advanced coatings optimized to suppress the internal reflections that cause halos. It is the superior choice for imagers who demand the cleanest possible raw data, especially when shooting targets in star-rich fields.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhen do I need the Player One 2\" UV\/IR-Cut filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis filter is essential for nearly all astronomical imaging with a color or monochrome camera, especially when using a telescope that is not a pure reflector (like a Newtonian). \u003cstrong\u003eRefractors, SCTs, Maksutovs, and RCs\u003c\/strong\u003e all benefit significantly, as they do not focus UV and IR light at the same plane as visible light, which causes bloated stars. This filter corrects that by only allowing visible light to pass.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Player One filter help reduce star bloat in my 80mm refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. An 80mm refractor, particularly an achromatic or doublet design, is a prime example of an optical system that needs strong UV\/IR filtering. Without it, unfocused infrared light will create soft, bloated halos around your stars. The Player One UV\/IR-Cut filter will produce noticeably tighter, sharper stars across the field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Player One UV\/IR-Cut filter necessary for imaging Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is highly recommended for planetary imaging. Using this filter with a color camera when imaging Jupiter or Saturn ensures that only the focused visible light contributes to the final image. This increases sharpness and contrast, allowing you to resolve finer details in the cloud bands and the Great Red Spot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between this Player One filter and a standard L-filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eBoth filters block UV and IR light. However, the Player One UV\/IR-Cut Anti-Halo filter includes superior multi-layer coatings designed to eliminate internal reflections between the filter and the camera sensor. This specifically targets and reduces the \"halos\" that can appear around very bright stars, a common issue with standard L-filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Player One 2\" Anti-Halo filter for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile it is designed for imaging, it can be used visually. Some observers with highly-corrected apochromatic refractors find it can slightly improve contrast at the eyepiece. However, its primary and most significant benefit is for photographic and digital imaging applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach this 2\" Player One filter to my camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Player One filter has standard \u003cstrong\u003eM48x0.75 female threads\u003c\/strong\u003e. It can be threaded directly into a 2\" filter wheel, a filter drawer, or the 2\" nosepiece of your camera or field flattener.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThreads\u003c\/td\u003e\n\u003ctd\u003eM48x0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/player-one-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003ePlayer One 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Player One","offers":[{"title":"Default Title","offer_id":51112145813789,"sku":"POA-AH-UV-IR-CUT-2","price":83.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Player-One-UV-IR-CUT-2inch-Filter.png?v=1775160543"},{"product_id":"player-one-anti-halo-pro-dual-band-2-inch-ha-oiii-filter","title":"Player One Anti-Halo PRO Dual-Band Ha\/OIII Filter - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Halo Suppression:\u003c\/strong\u003e Specifically engineered to eliminate halos around even the brightest stars.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Band Ha+OIII Design:\u003c\/strong\u003e Captures hydrogen-alpha and oxygen-III emission lines simultaneously, ideal for one-shot color cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-inch Mounted Format:\u003c\/strong\u003e Standard size for use in 2\" focusers, filter wheels, and filter drawers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProven on Fast Optics:\u003c\/strong\u003e Performance validated on an f\/4 Newtonian reflector, ensuring compatibility with demanding, fast-ratio systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section-center\"\u003e\n      \u003ch2\u003eAnti-Halo PRO Dual-Band 2″ Ha+OIII filter\u003c\/h2\u003e\n      \u003cp\u003eThe Anti-Halo PRO Dual-Band 2″ Ha+OIII filter is engineered to solve the single most persistent artifact in modern narrowband astrophotography: distracting halos around bright stars. Its effectiveness was proven in a demanding test on Vega, a magnitude 0 star, where a 120-second exposure with an 8\" f\/4 Newtonian produced a clean, halo-free stellar profile.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eTested on Vega: Zero Halos on a Magnitude 0 Star\u003c\/h3\u003e\n      \u003cp\u003eMany filters fail when imaging targets near bright stars. The Anti-Halo PRO was subjected to a worst-case scenario: a 120-second exposure of Vega, one of the brightest stars in the night sky, using a fast 8\" f\/4 Newtonian telescope. The result is a complete absence of the characteristic halo that plagues other narrowband and dual-band designs, proving its ability to maintain image integrity under the most challenging conditions.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eDual-Band Capture for Light-Polluted Skies\u003c\/h3\u003e\n      \u003cp\u003eDesigned for one-shot color cameras (DSLR, Mirrorless, and dedicated OSC astro cameras), this filter isolates the two most prominent emission nebula wavelengths—Hydrogen-alpha and Oxygen-III. This allows you to capture high-contrast nebula data from suburban skies in a single set of exposures, dramatically simplifying your imaging workflow and processing time compared to monochrome filter sets.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n    \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eAnti-Halo PRO vs. Conventional Filters: A Critical Difference\u003c\/h3\u003e\n      \u003cp\u003eWhile many filter manufacturers focus exclusively on achieving narrower bandpasses, this often comes at the cost of increased internal reflections, resulting in prominent halos. The Anti-Halo PRO prioritizes clean optical performance across the entire frame. It delivers the high-contrast, light-pollution-blocking benefits of a dual-band filter without forcing you to compromise on star quality, making it the superior choice for images containing bright, high-magnitude stars.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the Anti-Halo PRO Dual-Band filter different from other Ha+OIII filters?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eIts primary design goal is \u003cstrong\u003ehalo suppression\u003c\/strong\u003e. While other filters focus solely on narrow bandpass, they can introduce severe halos around bright stars. The Anti-Halo PRO uses advanced coating techniques to eliminate these artifacts, ensuring clean stars even in fields with high-magnitude objects.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Anti-Halo PRO filter suitable for my DSLR or one-shot color camera?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, it is ideal for these cameras. The filter was tested using a Canon 700D DSLR. It passes both the red H-alpha and blue-green OIII wavelengths, allowing a standard color sensor to capture detailed nebula data in a single shot from light-polluted locations.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Anti-Halo PRO filter perform on a target like the Orion Nebula (M42)?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThis is an excellent use case. The Anti-Halo PRO filter will allow you to capture the faint outer nebulosity of M42 while keeping the bright stars of the Trapezium cluster sharp and free of distracting halos. This preserves the high dynamic range of the target without introducing artifacts.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the ideal focal ratio for the Anti-Halo PRO filter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe filter has been proven to work exceptionally well on \u003cstrong\u003efast f\/4 systems\u003c\/strong\u003e, which are often the most challenging for filters due to the steep light cone angles. This indicates it will perform robustly on a wide range of telescope focal ratios, from fast Newtonians to slower refractors and SCTs.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIf I image the Veil Nebula (NGC 6960) near the star 52 Cygni, will this filter prevent halos?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, this is exactly the type of scenario the Anti-Halo PRO is designed for. It will suppress the halo from the bright star 52 Cygni, allowing the delicate, filamentary structure of the Witch's Broom Nebula to be captured cleanly without being overwhelmed by filter-induced artifacts.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Anti-Halo PRO filter for visual observing?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNo, this is an imaging-only filter. Narrowband and dual-band filters have very restrictive bandpasses that are too dim for the human eye. They are designed for long-exposure astrophotography with a camera.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003ctable class=\"DAV-specifications\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cul class=\"DAV-grid\"\u003e\n    \u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eAnti-Halo PRO Dual-Band 2\" Filter\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n    \u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eProtective Case\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cp\u003e\u003ca title=\"Player One 2-Year Warranty\" href=\"https:\/\/davidastro.com\/pages\/player-one-warranty-policy\" target=\"_blank\"\u003ePlayer One 2-Year Warranty\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Player One","offers":[{"title":"Default Title","offer_id":52913424597277,"sku":"POA-AHP-HO-2","price":699.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PlayerOne-Anti-Halo-PRO-Dual-Band-2-Ha-OIII-filter-1_f6d48492-c19e-4962-b802-6c731d4e7240.jpg?v=1789090877"},{"product_id":"player-one-uvenus-1-25-inch-uv-pass-filter-e-series","title":"Player One UVenus UV-Pass Filter E-series - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eReveals Cloud Detail on Venus\u003c\/li\u003e\n\u003cli\u003eUV-Pass Band Optimized for Planetary Imaging\u003c\/li\u003e\n\u003cli\u003eE-Series High-Quality Optical Glass Substrate\u003c\/li\u003e\n\u003cli\u003e1.25\" Mounted Filter Format\u003c\/li\u003e\n\u003cli\u003eMulti-Layer Coatings for High Contrast\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eUVenus 1.25″ UV-PASS Filter E-series\u003c\/h2\u003e\n\u003cp\u003eThe Player One UVenus 1.25″ UV-PASS Filter is engineered for the specific challenge of imaging Venus, isolating the ultraviolet wavelengths reflected by the planet's dense cloud tops. By rejecting visible and infrared light, this 1.25\" filter allows your CMOS or CCD camera to capture the subtle swirls and dark markings within Venus's atmosphere that are otherwise invisible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eRevealing Venus's Atmosphere: A Dedicated UV-Pass Filter\u003c\/h3\u003e\n\u003cp\u003eTo the naked eye or a standard camera, Venus appears as a brilliant but featureless crescent. Its true atmospheric dynamics are hidden in the ultraviolet spectrum, where its sulphuric acid clouds show significant contrast. The UVenus filter is designed to transmit only this UV light, transforming Venus from a flat disc into a world with discernible weather patterns.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eE-Series Construction: High-Contrast Substrate and Coatings\u003c\/h3\u003e\n\u003cp\u003eAs part of Player One's E-series, the UVenus filter is built on a high-quality optical glass substrate for maximum image clarity. Multi-layer composite coatings are applied to both surfaces to ensure high transmission of the desired UV wavelengths while suppressing reflections and internal ghosting, which is critical for maintaining contrast against Venus's bright glare.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePlayer One E-Series vs. S-Series Filters: What's the Upgrade?\u003c\/h3\u003e\n\u003cp\u003eThe E-series represents a significant step up from Player One's S-series filters. The key distinctions lie in the manufacturing standards and materials used.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical Substrate:\u003c\/strong\u003e The E-series uses a higher grade of optical glass, resulting in a cleaner, more uniform transmission profile.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating Technology:\u003c\/strong\u003e E-series filters employ a more advanced multi-layer composite coating process, designed to deliver higher contrast and durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget Application:\u003c\/strong\u003e While S-series filters are excellent general-purpose tools, E-series filters are optimized for dedicated imagers seeking professional-level results from modern CMOS and CCD cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy do I need a UVenus filter to see clouds on Venus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eVenus's atmosphere is extremely thick and reflective, making it appear featureless in visible light. However, specific chemical absorbers in the upper cloud deck create dark patterns that are only visible in ultraviolet light. The \u003cstrong\u003ePlayer One UVenus filter\u003c\/strong\u003e isolates this specific part of the spectrum, allowing a monochrome camera to capture these elusive atmospheric details.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the UVenus 1.25″ filter for anything other than Venus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile its primary purpose is imaging Venus, a UV-pass filter can also be used for specialized imaging of Jupiter's and Saturn's upper atmospheric hazes. However, its applications are limited. This is a highly specialized filter and is not suitable for general planetary, lunar, or deep-sky imaging, as it blocks all visible light.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the Player One E-series UVenus filter different from the S-series?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe E-series is an upgraded line built to a higher standard. It uses a higher-quality optical glass substrate and more advanced multi-layer coatings compared to the S-series. This results in higher contrast and images better optimized for demanding CMOS and CCD astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the UVenus filter work with my monochrome planetary camera on an 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. An 8\" SCT paired with a high-speed monochrome camera is an ideal setup for using the UVenus filter. The filter is optimized for modern CMOS\/CCD sensors, and the aperture of an 8\" telescope gathers enough light in the UV spectrum to allow for the short exposures needed to freeze atmospheric seeing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I see Venus's clouds visually with the UVenus filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The human eye is not sensitive to ultraviolet light. This filter blocks nearly all visible light, so when looking through it, you will see little to nothing. It is strictly an imaging filter designed for use with a camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need an Atmospheric Dispersion Corrector (ADC) when imaging Venus with the UVenus filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt is highly recommended. Atmospheric dispersion is much more severe at ultraviolet wavelengths than in visible light. When Venus is at lower altitudes, an ADC is essential to correct for the color fringing caused by the atmosphere and achieve a sharp image with the UVenus filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eUV-Pass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eE-Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Player_One_2026_Product_Catalog_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003ca title=\"Player One 2-Year Warranty\" href=\"https:\/\/davidastro.com\/pages\/player-one-warranty-policy\" target=\"_blank\"\u003ePlayer One 2-Year Warranty\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Player One","offers":[{"title":"Default Title","offer_id":52913424793885,"sku":"POA-UV125E","price":209.0,"currency_code":"CAD","in_stock":true}]},{"product_id":"player-one-ch4-8nm-1-25-inch-filter-e-series","title":"Player One CH4 8nm Filter E-series - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eIsolates the 8nm methane (CH4) absorption band\u003c\/li\u003e\n\u003cli\u003eStandard 1.25″ filter cell format\u003c\/li\u003e\n\u003cli\u003eOptimized for modern CMOS and CCD planetary cameras\u003c\/li\u003e\n\u003cli\u003eE-series features high-quality optical glass and multi-layer coatings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eCH4 8nm 1.25″ Filter E-series\u003c\/h2\u003e\n\u003cp\u003eThe Player One CH4 8nm 1.25″ E-series Filter isolates the specific methane absorption band, darkening the methane-rich belts of Jupiter and Saturn to dramatically increase the visibility of high-altitude storms and atmospheric features. This E-series filter is built to a higher standard using high-quality optical glass and advanced multi-layer coatings, optimized for the high sensitivity of modern CMOS and CCD sensors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eTargeting Gas Giants: The 8nm Methane Bandpass\u003c\/h3\u003e\n\u003cp\u003eMethane gas in the atmospheres of Jupiter and Saturn strongly absorbs sunlight. This filter's narrow 8nm bandpass is centered on this absorption line, making methane-rich areas appear very dark. Features at higher altitudes, above the main methane layers—such as bright equatorial zones and prominent storms like the Great Red Spot—reflect sunlight before it is absorbed and therefore stand out with exceptional contrast.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eE-Series Optics for CMOS\/CCD Imaging\u003c\/h3\u003e\n\u003cp\u003eThe E-series represents an upgrade in optical manufacturing, designed specifically for astrophotography with modern cameras. Each filter uses a high-quality glass substrate and multi-layer composite coatings to ensure high transmission within the narrow bandpass while suppressing unwanted out-of-band light. This construction minimizes halos and internal reflections, preserving the fine details captured by your sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePlayer One E-Series vs. S-Series: An Upgraded Standard\u003c\/h3\u003e\n\u003cp\u003ePlayer One offers two filter lines, and the E-series is the premium option for imagers seeking the best possible results. While the S-series provides excellent value, the E-series is manufactured to a higher standard.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubstrate and Coatings:\u003c\/strong\u003e The E-series employs higher quality optical glass and more advanced multi-layer coating technology than the S-series.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget Optimization:\u003c\/strong\u003e This upgraded construction is specifically aimed at maximizing the signal-to-noise ratio for sensitive CMOS and CCD cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary purpose of the Player One E-series CH4 8nm filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary purpose of the \u003cstrong\u003ePlayer One CH4 8nm filter\u003c\/strong\u003e is to enhance the contrast of atmospheric features on Jupiter and Saturn. By selectively passing light only in the methane absorption band, it darkens the main cloud belts, making high-altitude phenomena like storms, ovals, and bright zones appear much more prominent in monochrome images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 8nm bandpass on the CH4 filter affect my images?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe narrow \u003cstrong\u003e8nm bandpass\u003c\/strong\u003e is a trade-off. It provides very high contrast by rejecting almost all light outside the methane line, but it also significantly dims the image. This requires longer exposure times or higher gain settings, making it best suited for planetary cameras with high sensitivity and low read noise. It is not suitable for visual observation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main difference between the Player One E-series and S-series filters?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eE-series is an upgraded version of the S-series\u003c\/strong\u003e. According to Player One, the E-series uses a higher quality optical glass substrate and more advanced multi-layer composite coating technology. This results in a filter manufactured to a higher standard, optimized for professional results with modern CMOS and CCD cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the 1.25\" E-series CH4 filter for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this filter is designed exclusively for imaging. The 8nm bandpass is extremely restrictive and passes so little light that the image through an eyepiece would be far too dim for the human eye to see any detail. It relies on the ability of a camera sensor to accumulate light over time (long exposures).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the E-series CH4 filter improve my images of Jupiter with a C8 telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a Celestron 8\" SCT, the \u003cstrong\u003ePlayer One CH4 filter\u003c\/strong\u003e will allow you to capture a high-contrast map of Jupiter's upper atmosphere. The Great Red Spot, which can sometimes have low contrast in visible light, will appear as a bright, high-altitude feature against the darkened South Equatorial Belt. You will also be able to more clearly define the structure of the bright Equatorial Zone and detect other smaller storms (ovals) that are difficult to resolve in broadband images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Player One CH4 filter useful for imaging Saturn?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the \u003cstrong\u003eCH4 filter\u003c\/strong\u003e is excellent for Saturn. It enhances the contrast of the planet's own atmospheric belts and zones, similar to its effect on Jupiter. Critically, it also darkens the planet's globe significantly more than the icy rings, which do not contain methane. This makes the rings stand out with brilliant separation from the planet itself, creating a striking and detailed image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cp\u003e\u003ca title=\"Player One 2-Year Warranty\" href=\"https:\/\/davidastro.com\/pages\/player-one-warranty-policy\" target=\"_blank\"\u003ePlayer One 2-Year Warranty\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Player One","offers":[{"title":"Default Title","offer_id":52913424957725,"sku":"POA-CH4-125E","price":181.0,"currency_code":"CAD","in_stock":true}]},{"product_id":"player-one-ir685nm-1-25-inch-ir-pass-filter-s-series","title":"Player One IR685nm  IR-Pass Filter S-series - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003ePasses infrared light with wavelengths greater than 685nm\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" filter format for broad compatibility\u003c\/li\u003e\n\u003cli\u003eSignificantly improves image stability by reducing atmospheric seeing effects\u003c\/li\u003e\n\u003cli\u003eEnhances contrast for high-resolution lunar and planetary imaging\u003c\/li\u003e\n\u003cli\u003eS-Series construction with double-sided multi-layer coatings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003ePlayer One IR685nm 1.25″ IR-Pass Filter S-series\u003c\/h2\u003e\n\u003cp\u003eThe Player One IR685nm 1.25″ IR-Pass Filter S-series isolates infrared light above the 685nm wavelength, arming your monochrome camera against poor atmospheric seeing. By blocking the shorter, more turbulent wavelengths of visible light, this filter transmits a more stable signal, allowing you to capture significantly sharper details on the Moon and planets through a standard 1.25\" filter thread.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eStabilize Seeing: Pass Only Wavelengths Above 685nm\u003c\/h3\u003e\n\u003cp\u003eAtmospheric turbulence, or \"seeing,\" is the primary barrier to sharp planetary imaging, as it scatters shorter wavelengths of light more severely. The IR685 filter combats this by creating a hard cutoff at 685nm, transmitting only deep red and near-infrared light which is far less susceptible to atmospheric distortion. This technique effectively \"freezes\" the image, revealing fine details that are otherwise blurred into a shimmering mess on nights of average seeing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eHigh-Resolution Imaging in a 1.25\" Format\u003c\/h3\u003e\n\u003cp\u003eThe IR685 filter is a critical tool for extracting maximum lunar and planetary detail. For lunar imaging, the increased contrast in the infrared spectrum darkens the sky and sharpens the distinction between sunlit crater rims and shadowed floors. For planetary work, it's particularly effective for revealing faint, low-contrast features, most notably the elusive cloud bands of Uranus, a target where infrared imaging makes a decisive difference.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eS-Series Construction with Double-Sided Coatings\u003c\/h3\u003e\n\u003cp\u003eAs part of the Player One S-series, this filter is built on a high-quality optical glass substrate for maximum image fidelity. It features an upgraded double-sided, multi-layer composite coating that ensures high transmission of the desired infrared wavelengths while reflecting unwanted light. This advanced coating technology minimizes internal reflections and artifacts, preserving the high contrast needed for serious planetary work.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Player One IR685nm filter help when imaging Jupiter with an 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOn nights with unsteady air, the IR685nm filter will deliver a noticeably more stable image of Jupiter through an 8\" SCT. By cutting out the turbulent blue and green light, you can use longer exposures or higher gain to capture sharp infrared data of the cloud bands and the Great Red Spot. This data can then be used as a high-detail luminance layer for an RGB color image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Player One IR685nm filter to see the cloud bands on Uranus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is one of the primary applications for this filter. Uranus's cloud bands are notoriously faint in visible light but show significantly more contrast in the near-infrared spectrum. Using the IR685nm filter with a monochrome camera and a telescope of sufficient aperture is a proven method for successfully imaging these challenging features.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Player One IR685nm filter suitable for color cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this filter is designed exclusively for \u003cstrong\u003emonochrome cameras\u003c\/strong\u003e. A color camera's sensor has a Bayer mask (red, green, and blue pixels) that blocks most of the infrared light from reaching the sensor, and only the red pixels would receive any significant signal. To take advantage of IR imaging, a monochrome camera is required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of using the Player One IR685nm filter for lunar photography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe main advantages are improved seeing and higher contrast. The IR685nm filter stabilizes the image, allowing you to resolve smaller craters, rilles, and mountain ranges. It also provides a \"daylight\" look to the lunar surface with very dark skies, making fine surface details stand out more clearly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Player One IR685nm filter work with my 1.25\" filter wheel?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Player One IR685nm filter is housed in a standard 1.25\" cell with male M28.5x0.6 threads, making it fully compatible with any standard 1.25\" filter wheel, filter drawer, or eyepiece that accepts threaded filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Player One IR685nm filter compare to a standard red filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA standard red filter typically passes light from about 610nm upwards, including a significant amount of visible red light. The IR685nm filter provides a much deeper cut into the infrared, passing only light from 685nm and up. This results in a more dramatic improvement in seeing compared to a red filter, though it requires a camera with good sensitivity in the near-infrared.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eIR-Pass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCut-on Wavelength\u003c\/td\u003e\n\u003ctd\u003e685nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThreads\u003c\/td\u003e\n\u003ctd\u003eM28.5x0.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eS-Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eIR685nm 1.25″ IR-Pass Filter S-series\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eProtective Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Player_One_2026_Product_Catalog_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003ca title=\"Player One 2-Year Warranty\" href=\"https:\/\/davidastro.com\/pages\/player-one-warranty-policy\" target=\"_blank\"\u003ePlayer One 2-Year Warranty\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Player One","offers":[{"title":"Default Title","offer_id":52913425318173,"sku":"POA-IR685","price":39.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PlayerOne-IR685nm-1-25-IR-Pass-Filter-S-series-1_cdeb2d14-3be4-4fc2-9688-35e59747bd58.jpg?v=1789090900"},{"product_id":"player-one-ir850nm-1-25-inch-ir-pass-filter-s-series","title":"Player One IR850nm IR-Pass Filter S-series - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003ePasses Infrared Light at 850nm\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" Filter Size\u003c\/li\u003e\n\u003cli\u003eBlocks Visible and Ultraviolet Light\u003c\/li\u003e\n\u003cli\u003eHigh-Quality Optical Glass Substrate\u003c\/li\u003e\n\u003cli\u003eMulti-Layer Anti-Reflection Coatings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section-center\"\u003e\n      \u003ch2\u003ePlayer One IR850nm 1.25″ IR-Pass Filter S-series\u003c\/h2\u003e\n      \u003cp\u003eThe Player One IR850nm 1.25″ IR-Pass Filter isolates a narrow slice of the near-infrared spectrum centered at 850nm, blocking unwanted visible light to dramatically increase planetary contrast. Designed for the standard 1.25″ format, this filter is purpose-built to reveal high-contrast details on planets like Venus, which are only visible to a sensor sensitive to wavelengths beyond 850nm.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eRevealing Venus's Clouds at 850nm\u003c\/h3\u003e\n      \u003cp\u003eFor planetary imagers, Venus presents a unique challenge: a visually blank disc hiding a complex, dynamic atmosphere. The IR850nm filter is the key to unlocking it, allowing you to capture the faint thermal signatures of the planet's cloud tops. These structures are completely invisible in the visible spectrum but show remarkable detail in the near-infrared.\u003c\/p\u003e\n      \u003cp\u003eBy capturing data through this filter and combining it with images taken through an ultraviolet (UV) filter, you can create stunning composite photographs that show multiple layers of the Venusian atmosphere. This multi-band approach transforms the planet from a bright, featureless orb into a world of subtle swirls and patterns.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eThe 850nm Advantage: Cutting Through Atmospheric Turbulence\u003c\/h3\u003e\n      \u003cp\u003eThe primary benefit of imaging at a long wavelength like 850nm is its ability to mitigate the effects of atmospheric seeing. Shorter wavelengths of light (like blue and green) are scattered more easily by turbulence in Earth's atmosphere, resulting in a soft, blurry image. Infrared light is far less affected, leading to a steadier, sharper final result.\u003c\/p\u003e\n      \u003cp\u003eThis makes the IR850nm filter an essential tool for high-resolution imaging of the Moon and other planets, especially on nights of average or poor seeing. It acts as a \"seeing stabilizer,\" allowing you to capture fine details like lunar rilles and Martian surface features that would otherwise be lost to atmospheric blurring.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary use of the Player One IR850nm filter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe Player One IR850nm filter is designed for high-resolution planetary and lunar imaging. It blocks visible light and passes only near-infrared light at 850nm, which significantly reduces the blurring effects of atmospheric turbulence (seeing) and reveals details on planets like Venus that are invisible in the visible spectrum.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the IR850nm filter help with imaging Venus?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eVenus's dense cloud cover appears almost featureless in visible light. The \u003cstrong\u003eIR850nm filter\u003c\/strong\u003e allows your camera's sensor to capture the thermal emissions and subtle variations in the upper cloud deck. This data can be combined with images taken through a UV filter to create a comprehensive, multi-spectral portrait of the planet's atmosphere.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the IR850nm filter for deep-sky imaging?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNo, this filter is not recommended for deep-sky imaging. Most nebulae and galaxies are very faint in the near-infrared, and camera sensors have lower sensitivity at 850nm. This filter is specifically a tool for bright objects like the Moon and planets where cutting through atmospheric seeing is the primary goal.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 1.25\" IR850nm filter work with my existing filter wheel and camera?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, the \u003cstrong\u003ePlayer One IR850nm filter\u003c\/strong\u003e is housed in a standard 1.25\" cell with M28.5x0.6 threads. It is compatible with any standard 1.25\" filter wheel, filter drawer, or camera nosepiece that accepts threaded filters.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhy would I choose an 850nm filter over a 685nm IR-pass filter for lunar imaging?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eAn \u003cstrong\u003e850nm filter\u003c\/strong\u003e provides a greater seeing-reduction effect than a 685nm filter because its passband is further into the infrared spectrum. On nights of particularly poor seeing, the 850nm filter will deliver a steadier image. The trade-off is that less light is available at 850nm, requiring longer exposures or higher gain, which is why the 685nm is often used when seeing is more stable.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a monochrome or color camera for the IR850nm filter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eA \u003cstrong\u003emonochrome camera\u003c\/strong\u003e is strongly recommended. Color cameras have a Bayer matrix (a grid of red, green, and blue filters) over the sensor, which blocks a significant portion of the incoming infrared light and reduces both sensitivity and resolution. A monochrome sensor utilizes every pixel to capture the 850nm signal for the best possible result.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003ctable class=\"DAV-specifications\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e850nm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eIR-Pass\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eS-series\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cul class=\"DAV-grid\"\u003e\n    \u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eIR850nm 1.25″ IR-Pass Filter\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n    \u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eProtective Case\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cp\u003e\u003ca title=\"Player One 2-Year Warranty\" href=\"https:\/\/davidastro.com\/pages\/player-one-warranty-policy\" target=\"_blank\"\u003ePlayer One 2-Year Warranty\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Player One","offers":[{"title":"Default Title","offer_id":52913425613085,"sku":"POA-IR850","price":39.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PlayerOne-IR850nm-1-25-IR-Pass-Filter-S-series-1_43a3799c-a054-4fae-b2a3-c24eace4525e.jpg?v=1789090908"},{"product_id":"player-one-lrgb-filter-s-series","title":"Player One LRGB Filter S-series","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eLRGB filter set for monochrome astrophotography\u003c\/li\u003e\n\u003cli\u003eAvailable in 1.25\" and 2\" sizes (2\" round mounted for larger sensors)\u003c\/li\u003e\n\u003cli\u003eConstructed from high-quality optical glass substrate\u003c\/li\u003e\n\u003cli\u003eFeatures multi-layer composite anti-reflection coatings\u003c\/li\u003e\n\u003cli\u003eEngineered for high transmittance and halo suppression\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section-center\"\u003e\n      \u003ch2\u003eLRGB Filter S-series\u003c\/h2\u003e\n      \u003cp\u003eThe Player One S-series LRGB Filter Set provides the four essential filters—Luminance, Red, Green, and Blue—for creating vivid, true-color astronomical images with a monochrome camera. Available in 1.25\" and 2\" sizes, the set is built on a high-quality optical glass substrate with multi-layer coatings to ensure excellent transmittance and precise color separation.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eTrue-Color Astrophotography: The LRGB Method for Monochrome Cameras\u003c\/h3\u003e\n      \u003cp\u003eThis S-series LRGB filter set is designed specifically for monochrome cameras, allowing you to capture the full spectrum of an object one channel at a time. By taking separate exposures through the Luminance, Red, Green, and Blue filters and combining them during processing, you gain complete control over the final color balance and detail of your image. The 2\" format is ideal for cameras with larger sensors, preventing vignetting and ensuring even illumination across the entire field.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eS-Series Optical Design: High-Transmittance Coatings and Halo Control\u003c\/h3\u003e\n      \u003cp\u003ePlayer One builds the S-series filters using a high-quality optical glass substrate, applying multi-layer composite coatings to maximize light throughput and minimize reflections. This design achieves excellent transmittance for capturing faint signal, a sharp cutoff between channels for clean color data, and effective halo control around bright stars. The result is a high-contrast image with rich, accurate colors.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhy use the Player One S-series LRGB filters instead of a one-shot-color (OSC) camera?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eUsing the Player One S-series LRGB filters with a \u003cstrong\u003emonochrome camera\u003c\/strong\u003e offers greater signal per channel and more flexibility in post-processing. A mono sensor's pixels are not covered by a Bayer matrix, allowing them to collect more light. This method lets you independently adjust the color channels and luminance layer, often resulting in a sharper, more detailed final image compared to an OSC camera.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhich size should I choose: 1.25\" or 2\"?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eChoose by sensor size. The \u003cstrong\u003e2\" format\u003c\/strong\u003e is essential for imagers using cameras with larger sensors, such as APS-C or full-frame, because a smaller 1.25\" filter can cause significant vignetting (darkening of the corners) on these sensors. The larger clear aperture of a 2\" filter ensures the entire sensor is illuminated, providing a clean, evenly lit image from edge to edge.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow do the Player One S-series filters help control halos around bright stars like Sirius?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe S-series filters use \u003cstrong\u003emulti-layer anti-reflection coatings\u003c\/strong\u003e that are specifically designed to suppress halos. When imaging a bright star like Sirius or Vega, internal reflections between the filter and the sensor can create unwanted rings of light. These advanced coatings minimize those reflections, keeping stars tight and free of distracting artifacts.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhen imaging the Orion Nebula (M42) with a monochrome camera, how does this LRGB filter set help?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eFor an object like the Orion Nebula (M42), this LRGB filter set allows you to capture distinct data for each color. You can use the \u003cstrong\u003eRed filter\u003c\/strong\u003e to isolate the dominant Hydrogen-alpha regions, the \u003cstrong\u003eBlue filter\u003c\/strong\u003e to capture the faint reflection nebulosity around the Trapezium stars, and the \u003cstrong\u003eLuminance filter\u003c\/strong\u003e to gather high-resolution structural detail. Combining these gives you a far richer and more nuanced portrait of the nebula than is typically possible with a color camera.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does Player One mean by an \"excellent cutoff rate\" on these LRGB filters?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eAn \"excellent cutoff rate\" refers to how sharply the filter transitions from transmitting light to blocking it at the edge of its bandpass. A sharp cutoff ensures there is minimal overlap between the red, green, and blue channels. This clean separation prevents color bleed and makes it easier to achieve natural, accurate colors in your final combined image.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow do the multi-layer coatings on the Player One S-series filters improve my images?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe multi-layer coatings serve two primary functions. First, they act as \u003cstrong\u003eanti-reflection layers\u003c\/strong\u003e to maximize light transmission, meaning more of the faint light from your target reaches the sensor. Second, they are responsible for the filter's specific bandpass characteristics, ensuring that only the desired wavelengths of light for that channel (L, R, G, or B) are passed through, which is critical for good color fidelity.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ch3\u003e1.25\"\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eLRGB (Luminance, Red, Green, Blue) filter set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eS-series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubstrate\u003c\/td\u003e\n\u003ctd\u003eHigh-quality optical glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eMulti-layer composite coatings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesigned For\u003c\/td\u003e\n\u003ctd\u003eMonochrome astronomy cameras\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e2\"\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eLRGB (Luminance, Red, Green, Blue) filter set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e2\" (round mounted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eS-series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubstrate\u003c\/td\u003e\n\u003ctd\u003eHigh-quality optical glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eMulti-layer composite anti-reflection coatings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesigned For\u003c\/td\u003e\n\u003ctd\u003eMonochrome cameras with larger sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cul class=\"DAV-grid\"\u003e\n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cul class=\"DAV-grid\"\u003e\n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cp\u003e\u003ca title=\"Player One 2-Year Warranty\" href=\"https:\/\/davidastro.com\/pages\/player-one-warranty-policy\" target=\"_blank\"\u003ePlayer One 2-Year Warranty\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Player One","offers":[{"title":"1.25\"","offer_id":52913426268445,"sku":"POA-LRGB-125S","price":207.0,"currency_code":"CAD","in_stock":true},{"title":"2\"","offer_id":52913426301213,"sku":"POA-LRGB-2S","price":419.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PlayerOne-LRGB-1-25-Filter-S-series-1_e35bab6c-7a57-4d2a-9f60-ab7c49c7e7a3.jpg?v=1789090925"},{"product_id":"player-one-ha-7nm-narrowband-filter-s-series","title":"Player One Ha 7nm Narrowband Filter S-series","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e7nm Hydrogen-alpha (Ha) Narrowband Filter\u003c\/li\u003e\n\u003cli\u003eAvailable in 1.25\" Threaded Cell and 2\" Round Mounted Formats\u003c\/li\u003e\n\u003cli\u003eOptimized for Monochrome CMOS\/CCD Cameras\u003c\/li\u003e\n\u003cli\u003eS-Series High-Transmittance Multi-Layer Coatings\u003c\/li\u003e\n\u003cli\u003eSuppresses Light Pollution and Moonlight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003ePlayer One Ha 7nm Narrowband Filter S-series\u003c\/h2\u003e\n\u003cp\u003eThis Player One S-series Hydrogen-alpha filter has a tight 7nm bandpass and is available in 1.25\" and 2\" sizes. It is designed for modern filter wheels, isolating the hydrogen-alpha emission line, the dominant wavelength in emission nebulae, to produce high-contrast images from light-polluted skies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e7nm Bandpass: Maximum Contrast Under City Skies\u003c\/h3\u003e\n\u003cp\u003eThe core of this filter is its extremely narrow 7nm bandpass. This specification means the filter only allows a tiny sliver of the light spectrum to pass through to the sensor, centered on the emission line of ionized hydrogen. By aggressively blocking out broadband light sources like city glow, moonlight, and atmospheric airglow, the signal from the nebula is dramatically boosted relative to the background sky, revealing faint structures that would otherwise be lost.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eS-Series Optics: High-Transmittance Design in Two Sizes\u003c\/h3\u003e\n\u003cp\u003ePlayer One's S-series filters are built on a high-quality optical glass substrate and utilize multi-layer composite coatings to ensure maximum signal capture. These advanced coatings deliver excellent light transmittance at the target wavelength, which helps to shorten required exposure times. The design also focuses on sharp cutoff rates to prevent signal contamination and superior halo control, ensuring that bright stars remain tight and free of distracting internal reflections.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe Hubble Palette: Combining Ha with SII and OIII at 7nm\u003c\/h3\u003e\n\u003cp\u003eTogether with the matching SII and OIII 7nm filters (sold separately), this Ha filter lets you create false-color images in the Hubble Palette (SHO). By capturing data through each 7nm filter with a monochrome camera and mapping them to the Red (SII), Green (Ha), and Blue (OIII) color channels during processing, you can create the iconic gold-and-teal images made famous by the Hubble Space Telescope. This technique reveals scientific detail by separating the physical structures within nebulae like the Pillars of Creation in the Eagle Nebula (M16).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e7nm vs. Wider Bandpass Filters: The Exposure Time Trade-Off\u003c\/h3\u003e\n\u003cp\u003eCompared to filters with a wider bandpass (such as 12nm or 35nm), a 7nm filter offers a significant advantage in contrast, especially from suburban or urban locations. The trade-off for this enhanced contrast is the need for longer individual sub-exposures to collect enough photons. For imagers in heavily light-polluted areas, the 7nm design is the superior choice for maximizing signal-to-noise ratio. In contrast, those under pristine dark skies might find a wider filter gathers signal more quickly on very faint targets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Player One 7nm Ha filter perform on the Orion Nebula (M42) from a Bortle 7 zone?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis 7nm filter is ideal for that exact scenario. From a Bortle 7 zone, an unfiltered image of the Orion Nebula (M42) would be washed out. Using the Ha filter, you will isolate the hydrogen-alpha emission, dramatically darkening the sky background and revealing intricate details in the nebula's structure, including the faint outer loops that are normally invisible from the city.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich size should I choose for my camera and telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 2\" version is well-suited for fast optical systems: the larger clear aperture of the 2\" format helps to prevent vignetting on the larger sensors often paired with fast astrographs. The 1.25\" version comes in a standard 1.25\" threaded cell for 1.25\" filter wheels and drawers. While some narrowband filters can experience a slight band-shift with very fast optics, these S-series filters are designed with modern, high-performance coatings to minimize such effects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of separate 7nm Ha, SII, and OIII filters over a single dual-band or tri-band filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe main advantage is \u003cstrong\u003edata separation and processing flexibility\u003c\/strong\u003e. With individual Ha, SII, and OIII filters and a monochrome camera, you have complete control over the data from each emission line. This allows you to create Hubble Palette (SHO) images, natural-color H-O-O composites, or blend the narrowband data with RGB stars for a more realistic final image—options that are not possible with a one-shot-color dual-band filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this 7nm Player One filter for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this filter is not recommended for visual use. A 7nm bandpass is extremely restrictive and will block almost all visible light, resulting in an image that is far too dim to see through an eyepiece. It is designed specifically for long-exposure astrophotography with sensitive monochrome cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich threads do the 1.25\" and 2\" versions use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 2\" version is mounted in a standard cell with M48x0.75 threads and fits any astronomy filter wheel or accessory that accepts standard 2\" mounted filters. The 1.25\" version uses a standard 1.25\" threaded cell for 1.25\" filter wheels, drawers, and accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill I see a difference with the 7nm Ha filter on broadband targets like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor the most part, no. Broadband targets like the Andromeda Galaxy (M31) shine primarily through reflected starlight (continuum emission), which this filter is designed to block. While you might pick up some faint Ha regions in the galaxy's spiral arms, the vast majority of the galaxy's light will be rejected. This filter is intended for emission nebulae, not galaxies or star clusters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e1.25\"\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eNarrowband Emission Line\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass\u003c\/td\u003e\n\u003ctd\u003e7nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eS-series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmission Line\u003c\/td\u003e\n\u003ctd\u003eHydrogen-alpha (Ha)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e2\"\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eNarrowband Emission Line\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass\u003c\/td\u003e\n\u003ctd\u003e7nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e2\" (Round Mounted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eS-series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmission Line\u003c\/td\u003e\n\u003ctd\u003eHydrogen-alpha (Ha)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cp\u003e\u003ca title=\"Player One 2-Year Warranty\" href=\"https:\/\/davidastro.com\/pages\/player-one-warranty-policy\" target=\"_blank\"\u003ePlayer One 2-Year Warranty\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Player One","offers":[{"title":"1.25\"","offer_id":52913426694429,"sku":"POA-HA7-125","price":181.0,"currency_code":"CAD","in_stock":true},{"title":"2\"","offer_id":52913426727197,"sku":"POA-HA7-2","price":349.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PlayerOne-Ha-SII-OIII-7nm-narrowband-1-25-Filter-S-series-1_bd1312f3-08bc-4105-8bc1-88a7f6879847.jpg?v=1789090934"},{"product_id":"player-one-sii-7nm-narrowband-filter-s-series","title":"Player One SII 7nm Narrowband Filter S-series","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eSulfur-II (SII) Narrowband Filter\u003c\/li\u003e\n\u003cli\u003e7nm Narrowband Passband\u003c\/li\u003e\n\u003cli\u003eAvailable in 1.25\" and 2\" Mounted Formats\u003c\/li\u003e\n\u003cli\u003eOptimized for High-Contrast Astrophotography\u003c\/li\u003e\n\u003cli\u003eAdvanced Anti-Reflection and Halo Control Coatings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003ePlayer One SII 7nm Narrowband Filter S-series\u003c\/h2\u003e\n\u003cp\u003eThe Player One S-Series SII filter isolates the Sulfur-II (SII) emission line with a tight 7nm bandpass for high-contrast narrowband astrophotography. Available in 1.25\" and 2\" mounted formats, it uses high-quality optical glass and multi-layer coatings to isolate this nebular emission line, dramatically increasing detail and contrast, especially from light-polluted locations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eIsolating Emission Lines with a 7nm Bandpass\u003c\/h3\u003e\n\u003cp\u003eThe 7nm bandpass of this filter is the key to its function, transmitting a very narrow slice of the light spectrum while blocking out broadband light pollution from city skies, natural skyglow, and moonlight. This creates a near-black background, causing faint structures in emission nebulae like the Veil Nebula (NGC 6960) to stand out with striking clarity. A 7nm width offers a practical balance, providing excellent contrast without requiring the extremely long exposure times of tighter 3nm or 5nm filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCreating Hubble Palette Images with 3 Filters\u003c\/h3\u003e\n\u003cp\u003eCombined with the matching Ha and OIII 7nm filters (sold separately), this SII filter completes the three filters required to produce images in the iconic Hubble Palette. By capturing separate data for Sulfur-II, Hydrogen-alpha, and Oxygen-III, you can assign each signal to the Red, Green, and Blue channels of a color image, respectively. This technique reveals detailed structural and compositional differences within nebulae, creating vibrant, scientific, and aesthetically compelling portraits of objects like the Eagle Nebula (M16) and its Pillars of Creation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eS-Series Construction: Advanced Halo Control in 1.25\" and 2\" Formats\u003c\/h3\u003e\n\u003cp\u003ePlayer One's S-Series filters are built on a high-quality optical glass substrate and utilize multi-layer composite coatings to ensure excellent optical transmission at the target wavelength. A primary focus of the design is superior halo control, which minimizes the distracting rings of light that can form around bright stars in long exposures. This meticulous coating process results in cleaner data with sharper stars and preserves the faint nebular details surrounding them.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of the Player One S-Series 7nm SII filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is its ability to dramatically increase the contrast of emission nebulae by isolating the Sulfur-II (SII) wavelength. The \u003cstrong\u003e7nm bandpass\u003c\/strong\u003e is aggressive enough to block most forms of light pollution, allowing you to capture deep-sky objects from suburban or even urban locations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I use the SII filter with Ha and OIII filters to create a color image?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou capture a series of monochrome images through each of the three filters (SII, Ha, and OIII) separately. In post-processing software, you combine them into a single color image. The most common mapping is the \"Hubble Palette\":\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRed Channel:\u003c\/strong\u003e Sulfur-II (SII) data\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGreen Channel:\u003c\/strong\u003e Hydrogen-alpha (Ha) data\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlue Channel:\u003c\/strong\u003e Oxygen-III (OIII) data\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis assignment creates the classic gold-and-blue look associated with Hubble Space Telescope images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 7nm SII filter suitable for my fast f\/4 Newtonian telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the 7nm bandpass is generally suitable for telescopes with focal ratios of f\/4 and slower. Very fast systems (f\/2.8 or faster) can sometimes experience a phenomenon called \"band-shift\" with narrowband filters, but a 7nm design is more forgiving than ultra-narrow 3nm filters. The 1.25\" version is ideal for most dedicated astronomy cameras that have smaller sensors, while the 2\" version suits larger sensors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich size should I choose for my camera: 1.25\" or 2\"?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e1.25\" filters are too small for full-frame sensors and will cause severe vignetting (darkening of the corners); they are designed for cameras with smaller sensors, such as APS-C, Four Thirds, or smaller dedicated planetary\/guide cameras. The 2\" version, with standard M48x0.75 threads, prevents vignetting with larger camera sensors or focal reducers and ensures the entire light cone illuminates your sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Player One SII filter perform on the North America Nebula (NGC 7000)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe North America Nebula is an extremely large object rich in Hydrogen-alpha. The \u003cstrong\u003eSII filter\u003c\/strong\u003e will pick up trace amounts of sulfur. Combined with \u003cstrong\u003eHa filter\u003c\/strong\u003e data revealing the intricate structures of the \"Cygnus Wall\" and \u003cstrong\u003eOIII filter\u003c\/strong\u003e data isolating the shockfront regions where stellar winds are exciting oxygen, it allows you to create a full Hubble Palette image with rich color variation across the nebula.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Player One 7nm SII filter for viewing the Sun?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eAbsolutely not.\u003c\/strong\u003e This is a nighttime narrowband filter and lacks the necessary energy rejection components for solar observation. Attempting to view the Sun through a narrowband filter will cause permanent eye damage and destroy your camera sensor. Safe solar observation requires a dedicated, full-aperture solar filter or a specialized solar telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e1.25\"\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eNarrowband Interference Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmission Line\u003c\/td\u003e\n\u003ctd\u003eSulfur-II (SII)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass\u003c\/td\u003e\n\u003ctd\u003e7nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e1.25\" (Mounted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003ePlayer One S-Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e2\"\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eNarrowband SII Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eS-Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass\u003c\/td\u003e\n\u003ctd\u003e7nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e2\" (Mounted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThreads\u003c\/td\u003e\n\u003ctd\u003eM48x0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThis product consists of the SII 7nm filter in the selected size only. Protective cases and other accessories are not specified by the manufacturer.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Player_One_2026_Product_Catalog_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003ca title=\"Player One 2-Year Warranty\" href=\"https:\/\/davidastro.com\/pages\/player-one-warranty-policy\" target=\"_blank\"\u003ePlayer One 2-Year Warranty\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Player One","offers":[{"title":"1.25\"","offer_id":52913426989341,"sku":"POA-SII7-125","price":181.0,"currency_code":"CAD","in_stock":true},{"title":"2\"","offer_id":52913427022109,"sku":"POA-SII7-2","price":349.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PlayerOne-Ha-SII-OIII-7nm-narrowband-1-25-Filter-S-series-1-SII7-125_8a98b9af-3a8e-4c13-add3-9b64be7c7f81.jpg?v=1789090943"},{"product_id":"player-one-oiii-7nm-narrowband-filter-s-series","title":"Player One OIII 7nm Narrowband Filter S-series","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eOxygen-III (OIII) 7nm Narrowband Filter\u003c\/li\u003e\n\u003cli\u003eAvailable in 1.25\" and 2\" Sizes for Narrowband Astrophotography\u003c\/li\u003e\n\u003cli\u003eHigh-Transmission, Multi-Layer Coatings\u003c\/li\u003e\n\u003cli\u003eHigh-Quality Optical Glass Substrate\u003c\/li\u003e\n\u003cli\u003eExcellent Halo Suppression and Sharp Cutoffs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section-center\"\u003e\n      \u003ch2\u003ePlayer One OIII 7nm Narrowband Filter S-series\u003c\/h2\u003e\n      \u003cp\u003eThe Player One S-series OIII filter isolates the Oxygen-III emission line, one of the three essential filters—alongside Hydrogen-alpha and Sulfur-II—for advanced narrowband astrophotography. Available in 1.25\" and 2\" sizes with a 7nm bandpass, it is built on a high-quality optical glass substrate with multi-layer coatings to isolate this key emission line from nebulae with excellent transmission and sharp cutoffs.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eThe S-Series Line: Capturing 3 Core Nebulae Emission Lines\u003c\/h3\u003e\n      \u003cp\u003eNarrowband filters form the foundation of modern deep-sky imaging, especially from light-polluted locations. This OIII filter isolates one of the three primary emission lines found in most nebulae, so you can capture pristine, high-contrast data of your target while rejecting unwanted city glow, moonlight, and airglow. The three lines, with Ha and SII filters sold separately:\u003c\/p\u003e\n        \u003cul\u003e\n          \u003cli\u003e\n\u003cstrong\u003eHydrogen-alpha (Ha):\u003c\/strong\u003e Captures the most dominant wavelength in emission nebulae, revealing intricate structural details in objects like the North American Nebula (NGC 7000).\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003eSulfur-II (SII):\u003c\/strong\u003e Isolates ionized sulfur, often found in the shock fronts and deeper, dense regions of nebulae, adding texture and a deep red color in false-color composites.\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003eOxygen-III (OIII, this filter):\u003c\/strong\u003e Gathers light from doubly ionized oxygen, which traces the hottest, highest-energy areas of a nebula, typically appearing as blue or green in finished images.\u003c\/li\u003e\n        \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n    \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eAdvanced Coatings for Superior Halo Control and Transmission\u003c\/h3\u003e\n      \u003cp\u003ePlayer One constructs the S-series filters using a high-quality optical glass substrate, ensuring a stable and parfocal platform. The surfaces receive a multi-layer composite coating engineered for astrophotography, which delivers sharp cutoff rates to cleanly separate the target wavelength from adjacent light pollution lines. The 2\" format provides a clear aperture suitable for larger imaging sensors, preventing vignetting on full-frame cameras or when used with fast optical systems.\u003c\/p\u003e\n      \u003cp\u003eThis coating technology also provides excellent halo control around bright stars. This prevents distracting rings and artifacts that can otherwise overwhelm the faint nebulosity in your image, resulting in cleaner data and a more natural-looking final result with stars that remain tight and well-defined.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eCreating a Hubble Palette Image with Ha, SII, and OIII\u003c\/h3\u003e\n      \u003cp\u003eThe primary application for this filter, together with Ha and SII filters, is creating false-color images in the \"Hubble Palette,\" or SHO mapping. By assigning the data from the SII filter to the red channel, Ha to the green, and OIII to the blue, you can produce vibrant, scientifically informative images that reveal the underlying chemical composition of a nebula.\u003c\/p\u003e\n      \u003cp\u003eThis technique is not only aesthetically striking but also a powerful tool for separating structures within complex targets like the Heart Nebula (IC 1805) or the Eagle Nebula (M16). The Player One S-series OIII filter and its Ha and SII counterparts give you the necessary tools to begin exploring this advanced processing technique with your monochrome astronomy camera.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of using the Player One S-series OIII filter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe main advantage is its ability to dramatically increase contrast and detail in images of emission nebulae by isolating the Oxygen-III wavelength. This makes the Player One S-series OIII filter highly effective at combating light pollution, allowing you to capture high-quality deep-sky images even from urban or suburban locations.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow would I use the S-series OIII filter to image the Pelican Nebula (IC 5070)?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eTo image the Pelican Nebula with a monochrome camera, you would capture separate long-exposure images with the OIII filter and the matching \u003cstrong\u003eHa and SII filters\u003c\/strong\u003e. Later, in processing software, you can combine these three black-and-white images into a single color photo, often using the Hubble Palette (SHO) to assign SII to red, Ha to green, and OIII to blue for a vibrant, detailed result.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of results can I expect with the S-series OIII filter on the Rosette Nebula (NGC 2244) using a monochrome camera?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eOn the Rosette Nebula, the \u003cstrong\u003eOIII filter\u003c\/strong\u003e will highlight the hot, central region around the star cluster. Combined with \u003cstrong\u003eHa filter\u003c\/strong\u003e data revealing the vast, sweeping structures of the hydrogen gas and \u003cstrong\u003eSII filter\u003c\/strong\u003e data picking out finer, wispy details at the outer edges, it will create a rich, multi-layered image that a broadband filter could not achieve.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Player One S-series OIII filter with a color camera?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eWhile narrowband filters like the Player One S-series are designed for \u003cstrong\u003emonochrome cameras\u003c\/strong\u003e for maximum efficiency, they can be used with a one-shot-color (OSC) camera. However, because the camera's color filter array will block much of the light, exposure times will need to be significantly longer, and the resulting signal will be weaker than with a dedicated mono camera.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eThe product description for the S-series OIII filter mentions halo control. Why is this important?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eExcellent halo control is critical for narrowband imaging because you are often taking very long exposures of star fields. Poor coatings can cause bright stars to produce distracting rings or \"halos\" of reflected light. The advanced coatings on the Player One S-series filters suppress these artifacts, ensuring that bright stars in fields like the Sadr Region remain sharp points of light without overwhelming the faint surrounding nebulosity.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Player One S-series OIII filter help with light pollution?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe Player One S-series OIII filter helps by being extremely selective about which light it allows to pass through to the sensor. It is designed to transmit only the specific wavelength of light emitted by doubly ionized oxygen in nebulae while blocking most other sources, including the broad-spectrum glow from artificial city lights. This isolates the \"signal\" from the nebula from the \"noise\" of light pollution.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ch3\u003e1.25\"\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eNarrowband Emission Line\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmission Line\u003c\/td\u003e\n\u003ctd\u003eOxygen-III (OIII)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass\u003c\/td\u003e\n\u003ctd\u003e7nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eS-series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubstrate\u003c\/td\u003e\n\u003ctd\u003eHigh-quality optical glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eMulti-layer composite coatings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e2\"\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eNarrowband Emission Line\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmission Line\u003c\/td\u003e\n\u003ctd\u003eOxygen-III (OIII)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass\u003c\/td\u003e\n\u003ctd\u003e7nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eS-series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubstrate\u003c\/td\u003e\n\u003ctd\u003eHigh-quality optical glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eMulti-layer composite coatings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cul class=\"DAV-grid\"\u003e\n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Player_One_2026_Product_Catalog_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cp\u003e\u003ca title=\"Player One 2-Year Warranty\" href=\"https:\/\/davidastro.com\/pages\/player-one-warranty-policy\" target=\"_blank\"\u003ePlayer One 2-Year Warranty\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Player One","offers":[{"title":"1.25\"","offer_id":52913427317021,"sku":"POA-OIII7-125","price":181.0,"currency_code":"CAD","in_stock":true},{"title":"2\"","offer_id":52913427349789,"sku":"POA-OIII7-2","price":349.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PlayerOne-Ha-SII-OIII-7nm-narrowband-1-25-Filter-S-series-1-OIII7-125_ec64446a-413d-4654-ab96-7d4d2aafff45.jpg?v=1789090952"}],"url":"https:\/\/davidastro.com\/fr\/collections\/player-one-filters.oembed","provider":"David Astro","version":"1.0","type":"link"}