{"title":"Coma Correctors","description":null,"products":[{"product_id":"sky-watcher-quattro-coma-corrector","title":"Sky-Watcher Quattro Coma Corrector","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCorrects coma in fast Newtonian telescopes\u003c\/li\u003e\n\u003cli\u003eDelivers pinpoint stars across the entire field of view\u003c\/li\u003e\n\u003cli\u003eMaintains the telescope's native focal length and magnification\u003c\/li\u003e\n\u003cli\u003eOptimized for wide-field astrophotography\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\u003eSky-Watcher Quattro Coma Corrector\u003c\/h2\u003e\n\u003cp\u003eThe Sky-Watcher Quattro Coma Corrector is an essential optical accessory engineered to eliminate the inherent comatic aberration in fast Newtonian astrographs. It delivers stunningly sharp, pinpoint stars from the center to the very edge of the field of view. This corrector ensures that the native focal length and magnification of your telescope remain completely unaltered, preserving your original image scale for wide-field astrophotography.\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\u003eEliminate Coma for Edge-to-Edge Field Sharpness\u003c\/h3\u003e\n\u003cp\u003eFast Newtonian reflectors, like the Sky-Watcher Quattro series, produce a visual artifact known as coma, which distorts stars at the edge of the field into comet-like shapes. The Quattro Coma Corrector's optical design specifically counteracts this aberration, transforming distorted peripheral stars into the sharp, round points required for high-resolution imaging. This allows you to use your entire imaging sensor without cropping away compromised data.\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\u003ePreserve Your Telescope's Native Magnification\u003c\/h3\u003e\n\u003cp\u003eUnlike reducer\/correctors that shorten your telescope's focal length, the Sky-Watcher Quattro Coma Corrector functions at a 1x magnification. This is a critical feature for imagers who have carefully matched their camera and telescope for an optimal image scale. You get the full benefit of coma correction without changing the field of view or resolution your optical system was designed for.\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\u003eOptimized for Wide-Field Imaging\u003c\/h3\u003e\n\u003cp\u003eThis corrector is designed to illuminate large imaging sensors, making it the ideal match for wide-field targets like the Andromeda Galaxy (M31) or the vast hydrogen clouds of the North American Nebula (NGC 7000). By ensuring the entire corrected field is sharp, the Quattro Coma Corrector enables you to produce clean, professional-grade astrophotographs that are free of distracting optical errors.\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 primary function of the Sky-Watcher Quattro Coma Corrector?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary function of the Sky-Watcher Quattro Coma Corrector is to correct for \u003cstrong\u003ecoma\u003c\/strong\u003e, an optical aberration inherent in fast Newtonian telescopes. This results in sharp, pinpoint stars across the entire photographic field, especially near the edges.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Quattro Coma Corrector change my telescope's focal ratio?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, it does not. The Sky-Watcher Quattro Coma Corrector is a \u003cstrong\u003e1x corrector\u003c\/strong\u003e, which means it does not alter the telescope's native focal length or focal ratio. Your f\/4 telescope will remain f\/4, preserving your original image scale and field of view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Quattro Coma Corrector improve my images of the Rho Ophiuchi cloud complex with an f\/4 Newtonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhen imaging a dense, wide starfield like the Rho Ophiuchi region with a fast f\/4 Newtonian, stars at the edge of the frame would normally appear stretched and comet-shaped due to coma. The Quattro Coma Corrector corrects this, ensuring that the thousands of stars in the field, from the bright star Antares to the faintest background members, are rendered as sharp, round points across your entire sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Sky-Watcher Quattro Coma Corrector only for Sky-Watcher telescopes?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile it is optically matched for the Sky-Watcher Quattro series of imaging Newtonians, this coma corrector can often be used successfully with other fast Newtonian telescopes. However, achieving optimal results depends on matching the corrector's required back focus, which may require additional spacers or adapters for non-Quattro telescopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a coma corrector for visual observing, or is it just for imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile coma is most obvious in astrophotography, it is also visible through an eyepiece, especially with low-power, wide-field eyepieces. Using the Sky-Watcher Quattro Coma Corrector for visual work can provide a more pleasing, \"refractor-like\" view, with sharp stars across the entire field of view, not just in the center.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill I need to add spacers to achieve the correct back focus with the Quattro Coma Corrector?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAchieving the correct back focus (the distance from the corrector's flange to the camera sensor) is critical for its performance. Whether you need spacers depends on your specific camera and imaging train configuration. The corrector is designed to reach focus with standard DSLRs and dedicated astronomy cameras, but you should always confirm the required back focus distance for your setup.\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\u003eCorrector Type\u003c\/td\u003e\n\u003ctd\u003eComa Corrector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification Factor\u003c\/td\u003e\n\u003ctd\u003e1x (Unaltered)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Application\u003c\/td\u003e\n\u003ctd\u003eAstrophotography with fast Newtonian Telescopes\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\"\u003eSky-Watcher Quattro Coma Corrector\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\"\u003eDust Caps\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/sky-watcher-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSky-Watcher 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":44967191675165,"sku":"SW-S20204","price":680.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Sky-Watcher-Quattro-Coma-Corrector-S20204-1__76015.1594170794.1280.1280.jpg?v=1684338537"},{"product_id":"starlight-instruments-sips-coma-corrector","title":"Starlight Instruments SIPS Coma Corrector","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eIntegrates Tele Vue's renowned Paracorr Type 2 coma-correcting optics\u003c\/li\u003e\n\u003cli\u003eFunctions as a stationary, non-adjustable corrector for maximum rigidity\u003c\/li\u003e\n\u003cli\u003eDesigned exclusively for the 2\" Feather Touch focuser with 1.5\" of draw tube travel\u003c\/li\u003e\n\u003cli\u003eEliminates the need to re-tune the corrector when changing eyepieces\u003c\/li\u003e\n\u003cli\u003eReduces system flexure for sharper, more consistent imaging results\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\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\u003eStarlight Instruments SIPS Coma Corrector\u003c\/h2\u003e\n\u003cp\u003eThe Starlight Instruments SIPS (Starlight Integrated Paracorr System) combines Tele Vue's benchmark Paracorr Type 2 optics with a custom Starlight Instruments housing, creating the ultimate fixed coma corrector for fast Newtonian telescopes. Designed for the 2\" Feather Touch focuser with 1.5\" of draw tube travel, this system locks the corrector at the perfect optical distance, eliminating adjustment errors and mechanical flexure entirely.\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 Optical Core: An Integrated Tele Vue Paracorr Type 2\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the SIPS are the legendary Tele Vue Paracorr Type 2 optics. This lens group is the industry standard for correcting coma, the optical aberration in fast parabolic mirrors that renders stars at the edge of the field as distracting, comet-like shapes. By integrating these world-class optics, the SIPS ensures that your f\/3 to f\/5 Newtonian delivers pinpoint stars across the entire field of view, from the center to the extreme edge.\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 Mechanical Advantage: A Fixed System for the 2\" Feather Touch Focuser\u003c\/h3\u003e\n\u003cp\u003eThe true innovation of the SIPS is its mechanical design. Instead of a sliding, adjustable mechanism, Starlight Instruments has fixed the Paracorr Type 2 optics inside a rigid housing made specifically for their 2\" Feather Touch focuser. This set-and-forget system means that once installed, the corrector is always at the optimal spacing, delivering perfect correction without any user intervention. You simply focus your eyepiece or camera, saving valuable time and eliminating a common source of setup frustration.\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\u003eSIPS vs. Standard Paracorr: Eliminating Flexure and Adjustment Hassles\u003c\/h3\u003e\n\u003cp\u003eWhile a standard, tunable Paracorr offers the flexibility to be used in various focusers, that adjustability introduces complexity and potential flexure. The SIPS is a dedicated solution that trades universal compatibility for absolute performance and ease of use on its target instrument.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero Readjustment:\u003c\/strong\u003e With a standard Paracorr, you must fine-tune the corrector's position for different eyepieces. The SIPS requires no such adjustment; you just focus the focuser, making eyepiece swaps fast and foolproof.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Flexure:\u003c\/strong\u003e By creating a single, rigid unit, the SIPS provides a much more solid connection to the imaging train than a corrector held in place by thumbscrews. This is critical for astrophotography, where any amount of tilt or flex can compromise star shapes.\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 problem does the Starlight Instruments SIPS solve?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SIPS solves the problem of coma in fast Newtonian reflectors while also eliminating the mechanical flexure and adjustment hassles of traditional, non-integrated coma correctors. It provides a rigid, set-and-forget solution for achieving perfectly round stars across the entire field of view, especially for astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich focuser is the SIPS compatible with?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Starlight Instruments SIPS is specifically designed to be used with a \u003cstrong\u003e2\" Feather Touch focuser that has 1.5\" of draw tube travel\u003c\/strong\u003e. It is not compatible with other focuser models or brands.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the SIPS for imaging deep-sky objects like the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the SIPS is ideal for imaging objects like the Orion Nebula (M42) with a fast Newtonian. Its rigid, flex-free design ensures that the heavy cameras often used for deep-sky imaging are held securely, preventing tilt and maintaining sharp stars across the entire frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need to adjust the SIPS when switching from a low-power eyepiece to a high-power one for viewing Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This is the primary advantage of the SIPS. The optical corrector is fixed at the optimal position. When you switch from a wide-field eyepiece to a high-power planetary eyepiece to view Jupiter, you only need to adjust the main focus knobs on your Feather Touch focuser. The coma correction remains perfect without any further adjustments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the SIPS compare to a standard, adjustable Tele Vue Paracorr Type 2?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA standard Paracorr is more versatile, as it can be used in any 2\" focuser. However, the SIPS provides superior mechanical stability and ease of use. By fixing the optics, the SIPS eliminates a potential source of flexure and removes the need to constantly re-tune the corrector's position, saving you time and ensuring optimal performance every session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I collimate my telescope with the SIPS installed?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SIPS is designed to allow for easy collimation. The Tele Vue Paracorr Type 2 lens group can be removed from the main housing, giving you unobstructed access to your primary mirror for precise collimation adjustments. Once collimation is complete, you simply reinstall the lens group.\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\u003eComa Corrector Optics\u003c\/td\u003e\n\u003ctd\u003eTele Vue Paracorr Type 2, fixed at the optimum distance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Focuser\u003c\/td\u003e\n\u003ctd\u003e2\" Feather Touch with 1.5\" draw tube travel\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\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Starlight_Instruments_SIPS_Installation_Manual.pdf?v=1775616275\" 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\u003ca href=\"https:\/\/davidastro.com\/pages\/starlight-instruments-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eStarlight Instruments 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Starlight Instruments","offers":[{"title":"Default Title","offer_id":44967287521565,"sku":"SI-SIPS","price":1190.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Starlight-Instruments-Starlight-Integrated-Paracorr-SystemSIPS-Coma-Corrector-SI-SIPS-1__24307.1596314018.1280.1280.jpg?v=1684339992"},{"product_id":"baader-mpcc-mark-iii-multi-purpose-coma-corrector-2","title":"Baader MPCC Mark III (Multi Purpose Coma Corrector) - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCorrects Coma in Newtonians as Fast as f\/3.5\u003c\/li\u003e\n\u003cli\u003eZero Change in Focal Length or Field Size\u003c\/li\u003e\n\u003cli\u003eFits Standard 2\" Focusers\u003c\/li\u003e\n\u003cli\u003eFeatures Baader Planetarium Phantom Group™ Multicoatings\u003c\/li\u003e\n\u003cli\u003eIntegrated M48 Male Thread for Filter and Accessory Connection\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\u003eBaader MPCC Mark III (Multi Purpose Coma Corrector) - 2\"\u003c\/h2\u003e\n\u003cp\u003eThe Baader MPCC Mark III (Multi Purpose Coma Corrector) corrects coma in Newtonian telescopes as fast as f\/3.5, delivering pinpoint stars across the entire photographic field. Unlike other correctors, the MPCC III mounts in any 2\" focuser and introduces zero change to your telescope's focal length, ensuring an f\/4 system remains a true f\/4 imaging platform.\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\u003ePinpoint Stars Down to f\/3.5 without Changing Focal Length\u003c\/h3\u003e\n\u003cp\u003eThe primary function of the MPCC Mark III is to eliminate the distracting, comet-shaped stars at the edge of the field inherent in fast parabolic mirrors. This modern optical design is optimized for today's fast astrographs, providing exceptional correction down to f\/3.5. Crucially, the corrector achieves this without any magnification factor, preserving your telescope's native focal ratio and field of view for wide, fast imaging.\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\u003ePhantom Group Coatings: Full Spectrum Transmission from UV to NIR\u003c\/h3\u003e\n\u003cp\u003eEvery air-to-glass surface of the MPCC Mark III features Baader's proprietary Phantom Group™ wideband multicoating. This treatment ensures the highest possible light transmission while minimizing reflections and scatter. The result is a brighter, higher-contrast image, with a spectral response that extends from the ultraviolet to the near-infrared, making it ideal for the full range of modern color and monochrome imaging 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\u003eA Modular System for Any 2\" Focuser\u003c\/h3\u003e\n\u003cp\u003eDesigned as the market's most versatile coma corrector, the MPCC Mark III integrates seamlessly into virtually any imaging train. It slides into any 2\" focuser and features an M48 male thread on the camera side, allowing direct connection to filter wheels, off-axis guiders, and camera adapters. This modularity allows you to configure the corrector for both photographic and visual use, adapting to your specific equipment needs.\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\u003eMPCC Mark III vs. Original MPCC: From f\/4.5 to f\/3.5\u003c\/h3\u003e\n\u003cp\u003eWhile the original Baader MPCC was designed for Newtonians from f\/4.5 to f\/6, the Mark III represents a significant optical upgrade. The improved lens design provides sharp, pinpoint stars on systems as fast as f\/3.5. This key enhancement makes the MPCC Mark III the ideal choice for imagers using modern, fast Newtonian astrographs who demand sharp stars edge-to-edge.\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\"\u003eWill the Baader MPCC Mark III change my telescope's focal length?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The MPCC Mark III is a \"zero-power\" corrector, meaning it does not alter the native focal length or focal ratio of your telescope. An f\/4 Newtonian will remain an f\/4 Newtonian, preserving its original field of view and image scale.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the fastest telescope I can use with the MPCC Mark III?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe MPCC Mark III is designed to provide excellent coma correction on Newtonian telescopes as fast as \u003cstrong\u003ef\/3.5\u003c\/strong\u003e. It also works exceptionally well on slower systems up to f\/6.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I connect the MPCC Mark III to my DSLR for imaging the North American Nebula (NGC 7000)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou will need a standard M48 T-ring for your camera brand (e.g., Canon or Nikon). The T-ring threads directly onto the MPCC Mark III's M48 threads. Depending on your camera's sensor depth, you may need an additional T-2 spacer, such as the optional Baader T-Spacer (# 245 8405), to achieve the optimal 55mm back focus for sharp stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Baader MPCC Mark III for visual observing with my 10\" f\/4.7 Dobsonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The MPCC Mark III is available in a visual configuration that includes adapters to connect a standard 1.25\" or 2\" eyepiece. It will provide wide, sharp fields of view, making it excellent for observing large star clusters like the Hercules Cluster (M13) without distracting coma at the edges.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the Phantom Group coatings on the MPCC Mark III special?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eBaader's Phantom Group™ coatings are a proprietary 7-layer multicoating that provides extremely high light transmission across a very wide spectral range from UV to NIR. This minimizes light loss and reflections, resulting in higher contrast and brighter images compared to standard coatings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need special adapters to use the MPCC Mark III?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe base MPCC Mark III unit fits any standard 2\" focuser. For photographic use, you will need an M48 T-ring for your specific camera. For visual use, you will need an eyepiece holder that threads onto the M48 port. The corrector is sold in different configurations to provide the necessary adapters for your intended application.\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\u003eProduct Name\u003c\/td\u003e\n\u003ctd\u003eBaader MPCC Mark III (Multi Purpose Coma Corrector)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector Type\u003c\/td\u003e\n\u003ctd\u003eNewtonian Coma Corrector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptimized Focal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/3.5 to f\/6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length Modification\u003c\/td\u003e\n\u003ctd\u003eNone (1.0x)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003ePhantom Group™ Multicoatings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera-Side Thread\u003c\/td\u003e\n\u003ctd\u003eM48 x 0.75 Male Thread (2\" Filter Thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Configurations\u003c\/td\u003e\n\u003ctd\u003ePhotographic, Visual, and Visual\/Photographic Sets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.08 (Photographic)\u003cbr\u003e0.21 (Visual and Photographic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission\u003c\/td\u003e\n\u003ctd\u003e98%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAR-Coating\u003c\/td\u003e\n\u003ctd\u003ePhantom Coating® Group\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003e44\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eM42 x 0.75 (T-2), M48\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eM48\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eø 2\" (50.8mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Scale\u003c\/td\u003e\n\u003ctd\u003e1:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClamping System\u003c\/td\u003e\n\u003ctd\u003eScrew clamps (Visual and Photographic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eø 1¼\" (31.75 mm) (Visual and Photographic)\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\"\u003eBaader MPCC Mark III Coma Corrector Body\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\"\u003eDust Caps\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003cp\u003e\u003csmall\u003eNote: Package contents may vary depending on the specific visual or photographic configuration selected.\u003c\/small\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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\/Baader_Planetarium_MPCC_Mark_III_Coma_Corrector_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\"\u003eBaader Planetarium MPCC Mark III Coma Corrector Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_MPCC_Backfocus_from_T-2_and_M48_Surfaces_Drawing.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\"\u003eBaader Planetarium MPCC Backfocus from T-2 and M48 Surfaces Drawing\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_MPCC_Mark_III_Coma_Corrector_Product_Information.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\"\u003eBaader Planetarium MPCC Mark III Coma Corrector Product Information\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\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Photographic","offer_id":44967374258461,"sku":"BAA-2458400A","price":271.0,"currency_code":"CAD","in_stock":true},{"title":"Visual and Photographic","offer_id":44967374291229,"sku":"BAA-2458403","price":328.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/mpcc-version_750x750__20426.1625854161.1280.1280.jpg?v=1684341656"},{"product_id":"baader-rcc-i-rowe-coma-corrector","title":"Baader RCC I Rowe Coma Corrector","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eTriplet optical design corrects coma in fast Newtonian telescopes\u003c\/li\u003e\n\u003cli\u003eEngineered for a long back focus to accommodate complex imaging trains\u003c\/li\u003e\n\u003cli\u003eIdeal for use with Off-Axis Guiders, Adaptive Optics, and filter wheels\u003c\/li\u003e\n\u003cli\u003eFeatures Baader Planetarium's Phantom Group multi-coatings for maximum transmission\u003c\/li\u003e\n\u003cli\u003eConnects to accessories via a standard T-2 thread\u003c\/li\u003e\n\u003cli\u003eRemovable stop ring allows the corrector to sit deeper inside the focuser\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\u003eBaader RCC I Rowe Coma Corrector\u003c\/h2\u003e\n\u003cp\u003eThe Baader RCC I Rowe Coma Corrector employs a new triplet lens design to deliver sharp, coma-free stars across the field in fast Newtonian imaging systems, connecting to your camera and accessories via a universal T-2 thread. This corrector is engineered specifically for imagers who require significant back focus to accommodate accessories like off-axis guiders, adaptive optics, or filter wheels without compromising optical correction.\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\u003eTriplet Optical Design for Fast Newtonian Coma Correction\u003c\/h3\u003e\n\u003cp\u003eUnlike simpler coma corrector designs, the RCC I uses a triplet lens system designed by Dave Rowe to neutralize the coma inherent in parabolic mirrors. Each air-to-glass surface receives Baader's Phantom Group multi-coatings, ensuring that light transmission is maximized for brighter images and higher contrast, which is critical when imaging faint deep-sky objects.\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\u003eLong Back Focus: Integrating Guiders, Filter Wheels, and AO\u003c\/h3\u003e\n\u003cp\u003eThe primary advantage of the RCC I is its generous back focus distance, measured from its T-2 thread. This provides ample space to install a complete imaging train, including an off-axis guider for precise tracking, an adaptive optics unit for atmospheric correction, and a filter wheel for multi-band imaging, all behind the corrector.\u003c\/p\u003e\n\u003cp\u003eFor additional mechanical flexibility, the corrector's threaded stop ring can be removed. This allows the body of the RCC I to be inserted deeper into the focuser, helping you reach focus with a wide variety of telescope and accessory combinations.\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\u003eBaader RCC I vs. MPCC Mark III: Choosing Your Coma Corrector\u003c\/h3\u003e\n\u003cp\u003eBaader offers two excellent coma correctors, and the choice depends entirely on your imaging train's back focus requirements.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBaader MPCC Mark III:\u003c\/strong\u003e This corrector is designed for the standard 55mm back focus common with DSLRs and many dedicated astronomy cameras. It is the ideal choice for simpler setups where an OAG or filter wheel is not needed, offering excellent correction in a compact form factor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBaader RCC I:\u003c\/strong\u003e The RCC I is the solution for complex setups. Its long back focus is specifically intended to accommodate the added path length of off-axis guiders, filter wheels, and adaptive optics. If your imaging train exceeds 55mm, the RCC I is the necessary choice.\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 makes the Baader RCC I different from other coma correctors?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe key differentiator of the \u003cstrong\u003eBaader RCC I Rowe Coma Corrector\u003c\/strong\u003e is its significantly long back focus. This is a deliberate design choice that allows astrophotographers to place accessories like an \u003cstrong\u003eOff-Axis Guider (OAG)\u003c\/strong\u003e, \u003cstrong\u003eAdaptive Optics (AO)\u003c\/strong\u003e unit, or a \u003cstrong\u003efilter wheel\u003c\/strong\u003e between the corrector and the camera sensor, which is not possible with standard coma correctors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I achieve the correct spacing for my DSLR with the Baader RCC I?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the RCC I provides a long back focus, you will need to add extension tubes to reach the correct spacing for your camera. Baader recommends their \u003cstrong\u003eVariLock 46 T-2 Extension Tube (#2956946)\u003c\/strong\u003e, which is continuously variable and includes a helpful pre-engraved mark to quickly set the perfect distance for a standard DSLR with a T-2 ring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Baader RCC I work with my 8\" f\/4 Newtonian for imaging the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the RCC I is an excellent match for an 8\" f\/4 Newtonian. Its triplet design is made for fast optical systems and will produce sharp, point-like stars across the entire field of view, which is essential for capturing the full expanse of large targets like the Andromeda Galaxy (M31).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Baader RCC I for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Baader RCC I is specifically designed and optimized for astrophotography. While you could theoretically use it for visual observation, its optical prescription is not intended for eyepieces and may not produce optimal visual results. For visual coma correction, Baader's MPCC is a more suitable choice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have a ZWO OAG and filter wheel; is the RCC I a better choice than the MPCC for my Celestron 8\" f\/5 Newtonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. For your f\/5 Newtonian, the combination of a ZWO OAG and filter wheel will require much more than the standard 55mm of back focus. The \u003cstrong\u003eBaader RCC I\u003c\/strong\u003e is the correct choice here, as its long back focus is specifically designed to accommodate exactly this kind of accessory stack, whereas the MPCC would not provide enough spacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do the Phantom Group Coatings on the RCC I do?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003ePhantom Group Coatings\u003c\/strong\u003e are Baader Planetarium's proprietary 7-layer broadband anti-reflection coatings. They are applied to every air-to-glass surface on the RCC I's triplet lenses to maximize light transmission and minimize reflections, resulting in higher image contrast and brightness, especially on faint nebulae and galaxies.\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\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eRowe Coma Corrector (Triplet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eComa correction for fast Newtonian telescopes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003ePhantom Group Multi-Coatings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection\u003c\/td\u003e\n\u003ctd\u003eT-2 (M42x0.75) Male Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.17\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAR-Coating\u003c\/td\u003e\n\u003ctd\u003ePhantom Coating® Group\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size (in)\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptimized for focal ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eM42 x 0.75 (T-2), M48\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eM48\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eø 2\" (50.8mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking Range\u003c\/td\u003e\n\u003ctd\u003ef\/3.5 – f\/6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Scale\u003c\/td\u003e\n\u003ctd\u003e1:1\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44967374487837,"sku":"BAA-2956800","price":277.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-RCC-I-Rowe-Coma-Corrector-1__47999.1597111088.1280.1280.jpg?v=1684341672"},{"product_id":"sharpstar-mpcc-full-frame-coma-corrector","title":"SharpStar MPCC Full Frame Coma Corrector","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCorrects coma in Newtonian reflectors from 150mm to 600mm aperture\u003c\/li\u003e\n\u003cli\u003eOptimized for fast focal ratios from f\/3 to f\/6\u003c\/li\u003e\n\u003cli\u003eProvides a 44mm image circle for full-frame sensors\u003c\/li\u003e\n\u003cli\u003eMaintains native focal length with a 1.0x reduction factor\u003c\/li\u003e\n\u003cli\u003eStandard 55mm back focus simplifies camera connection\u003c\/li\u003e\n\u003cli\u003eFeatures a 4-element quadruplet optical design\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\u003eSharpStar MPCC Full Frame Coma Corrector\u003c\/h2\u003e\n\u003cp\u003eThe SharpStar MPCC Full Frame Coma Corrector is engineered to eliminate coma in fast Newtonian reflectors, transforming them into flat-field astrographs. Its advanced quadruplet optical design delivers pinpoint stars across a full-frame 44mm image circle, supporting sensors in everything from 150mm to 600mm aperture telescopes. With a 1.0x magnification factor, this corrector maintains your telescope's native focal length and image scale, while the industry-standard 55mm back focus and 2\" barrel ensure seamless integration into your imaging train.\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\u003eQuadruplet Correction for f\/3 to f\/6 Newtonians\u003c\/h3\u003e\n\u003cp\u003eThis corrector utilizes a four-element, air-spaced optical layout that includes an extra-low dispersion (ED) glass element. This sophisticated design provides a high degree of aberration control, effectively neutralizing the coma inherent in parabolic mirrors, especially those with aggressive focal ratios from f\/3 to f\/6. The result is a flat, sharp field from edge to edge, allowing you to use the full resolving power of your instrument.\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 44mm Image Circle and 55mm Back Focus\u003c\/h3\u003e\n\u003cp\u003eDesigned specifically for modern astrophotography, the SharpStar MPCC illuminates a 44mm image circle, fully covering full-frame (36x24mm) DSLR and dedicated CMOS\/CCD cameras without vignetting. Full-surface multi-layer coatings maximize light transmission for brighter images and higher contrast. The corrector features a standard 55mm back focus, measured from the unit's flange, which perfectly matches the spacing required by a DSLR with a standard T-ring, simplifying setup and ensuring optimal correction.\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 Standard 2\" Barrel and 0.35kg Weight\u003c\/h3\u003e\n\u003cp\u003eMechanically, the corrector is built for broad compatibility and minimal impact on your setup. It slides into any standard 2\" (50.8mm) focuser and, at a weight of only 0.35kg, it avoids placing excessive strain on the drawtube or upsetting the telescope's balance. Its total length of 118.7mm is compact enough for most focusers to accommodate without running out of in-travel.\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\u003eSharpStar 1.0x MPCC vs. 0.95x Corrector: Native Scale or Wider Field?\u003c\/h3\u003e\n\u003cp\u003eSharpStar offers two excellent coma correctors, and the choice depends entirely on your imaging goals. The 0.95x version provides a slight focal reduction, which makes your telescope faster and captures a wider field of view—ideal for large nebulae. This 1.0x MPCC, in contrast, preserves the telescope's native focal length. This is the better choice when you want to maintain the maximum image scale for resolving details in smaller galaxies, planetary nebulae, or globular clusters.\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 telescopes are compatible with the SharpStar MPCC Full Frame Coma Corrector?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis coma corrector is designed for \u003cstrong\u003eparaboloid Newtonian reflectors\u003c\/strong\u003e with apertures ranging from \u003cstrong\u003e150mm to 600mm\u003c\/strong\u003e and fast focal ratios between \u003cstrong\u003ef\/3 and f\/6\u003c\/strong\u003e. It is not suitable for refractors, SCTs, or other telescope designs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I achieve the required 55mm back focus with the SharpStar MPCC?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e55mm back focus\u003c\/strong\u003e is the industry standard for many imaging systems. A typical DSLR camera with a T-ring has a sensor distance of 55mm. For dedicated astronomy cameras, you will need to use a combination of extension tubes to achieve the precise 55mm distance from the corrector's rear flange to your camera's sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the SharpStar MPCC fully illuminate my full-frame camera on a 10\" f\/4 Newtonian imaging the North American Nebula (NGC 7000)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The corrector's \u003cstrong\u003e44mm image circle\u003c\/strong\u003e is specifically designed to cover full-frame sensors (which have a ~43mm diagonal) without vignetting. On an f\/4 system imaging a large target like the North American Nebula (NGC 7000), you can expect a flat, evenly illuminated field with sharp stars across the entire frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eShould I get this 1.0x SharpStar MPCC or the 0.95x version?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eChoose based on your primary imaging targets:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.0x MPCC (this model):\u003c\/strong\u003e Best for maintaining your telescope's native image scale. Ideal for smaller targets like the Whirlpool Galaxy (M51) or the Ring Nebula (M57) where you want maximum resolution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.95x Corrector:\u003c\/strong\u003e Best for maximizing your field of view and increasing the speed of your optical system. Ideal for very large targets or mosaics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the SharpStar MPCC for visual observing with my 12\" f\/5 Dobsonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile it is optimized for imaging, the corrector will work for visual use and will provide noticeably sharper stars at the edge of the field in a low-power, wide-field eyepiece. However, its primary function is astrophotography. You must also ensure your focuser has enough in-travel to accommodate the corrector's 118.7mm length.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of a 'Quadruplet' design in the SharpStar MPCC?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA \u003cstrong\u003equadruplet (4-element) design\u003c\/strong\u003e allows for a higher degree of optical correction than simpler two-element correctors. By using four lenses, including an ED glass element, the SharpStar MPCC can better control coma and other off-axis aberrations across a wide 44mm field, especially in very fast f\/3 or f\/4 Newtonians.\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\u003eApplication\u003c\/td\u003e\n\u003ctd\u003e150mm - 600mm Paraboloid Reflectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio Range\u003c\/td\u003e\n\u003ctd\u003ef\/3 - f\/6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification \/ Reduction Factor\u003c\/td\u003e\n\u003ctd\u003e1.0x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eQuadruplet (4-Element)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eFull-surface multi-layer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e55mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Diameter\u003c\/td\u003e\n\u003ctd\u003e2\" (50.8mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e118.7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.35kg\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:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\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\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSharpStar\/Askar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SharpStar Optics","offers":[{"title":"Default Title","offer_id":44967764066589,"sku":"SSO-SH1XMPCC","price":427.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/SharpStar-MPCC-1__11195.1609112656.1280.1280.jpg?v=1684345800"},{"product_id":"starizona-sct-corrector-lf-large-format-reducer-coma-corrector","title":"Starizona SCT Corrector LF - Large Format Reducer\/Coma Corrector","description":"\u003c!-- more --\u003e\u003cspan data-mce-fragment=\"1\"\u003eStarizona's SCT Corrector has been an incredibly popular focal reducer and coma corrector, giving astrophotographers with standard Schmidt-Cassegrain telescopes an improved optical system and wider field of view, with increased photographic speed. Starizona now offers a large-format version, the SCT Corrector LF, designed to cover full-frame (35mm format) sensors.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe SCT Corrector LF is designed for Celestron 11\" and 14\" standard SCTs. Designed to thread directly onto the large 3.29\" threads on the rear cell of C11 and C14 telescopes, the larger optical elements of the SCT Corrector LF minimize the vignetting over large sensors. Remaining vignetting over a large field is minimal and limited only by the telescope baffles, which are designed for a slower focal ratio; but this vignetting is easily removed by using flat field images. Sharpness is excellent over a 42mm diagonal, with spots sizes up to 9x smaller than the native telescope! The focal ratio is reduced to f\/7.2 on the C14 and f\/7 on the C11, for a speed increase of 2.1x and 1.9x, respectively.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe SCT Corrector LF is designed to increase the available backfocus compared to Starizona's standard SCT Corrector. Backfocus is 146, accommodating a variety of accessories. The rear threads on the SCT Corrector LF are the same 3.29\" threads as on the rear cell of the C11 and C14 telescopes, so standard accessories are easily attached.\u003c\/p\u003e","brand":"Starizona","offers":[{"title":"Default Title","offer_id":46905837224221,"sku":"STZ-SCTCORR-LF","price":699.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/image_652efa4f-9b28-4dc4-92b7-6752d1ea89a7.jpg?v=1698090461"},{"product_id":"tele-vue-paracorr-type-2","title":"Tele Vue Paracorr Type 2","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCorrects Coma in Fast Newtonian Reflectors\u003c\/li\u003e\n\u003cli\u003eFor f-ratios as fast as f\/3\u003c\/li\u003e\n\u003cli\u003e1.15x Magnification Factor\u003c\/li\u003e\n\u003cli\u003eAdjustable \"Tunable Top\" for Eyepiece Optimization\u003c\/li\u003e\n\u003cli\u003e4-Element, Multi-Coated Optics\u003c\/li\u003e\n\u003cli\u003e2-inch Barrel with Filter Threads\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\u003eManual\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\u003ePinpoint Stars to the Edge of Your View\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue Paracorr Type 2 is a universal coma corrector for fast Newtonian reflectors, designed to transform distorted, comet-shaped stars at the edge of the field into sharp, clean points. By inserting this device into your 2-inch focuser, you enable your fast-focal-ratio mirror to deliver the wide, sharp fields it was designed to produce, effectively upgrading the performance of your entire optical system.\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 Physics of a Perfect Starfield\u003c\/h3\u003e\n\u003cp\u003eOwners of fast Dobsonians and imaging Newtonians (typically f\/5 or faster) are familiar with coma, an inherent optical aberration where off-axis stars appear as distracting, comet-like flares. The Paracorr Type 2 employs a specialized 4-element, multi-coated lens system that intercepts and reshapes the telescope's converging light cone. This correction restores aberrated stars to the pinpoint dots you see at the center of the field, allowing you to experience the full, immersive potential of your wide-field eyepieces.\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\u003eOptimize for Every Eyepiece with the Tunable Top\u003c\/h3\u003e\n\u003cp\u003eNot all eyepieces are built alike; the location of their field stop varies by design and focal length. The Paracorr's ingenious \"Tunable Top\" is the key to universal compatibility. This adjustable mechanism lets you dial in the precise spacing between the Paracorr's lenses and your eyepiece's focal plane, ensuring the correction is perfectly optimized for any 1.25-inch or 2-inch eyepiece you own. The result is consistently sharp performance across your entire collection, from a low-power Nagler to a high-power Delos.\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 1.15x Magnification Trade-Off\u003c\/h3\u003e\n\u003cp\u003eTo achieve its level of correction, the Paracorr Type 2 introduces a minor, 1.15x increase to your telescope's magnification and focal length. This is a fundamental part of the optical design and a necessary trade-off for eliminating coma. This slight power increase also darkens the sky background, which can improve contrast on faint deep-sky objects like galactic dust lanes and the outer wisps of nebulae, often making the trade-off a net benefit for visual observers.\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 Tool for Visual and Imaging Setups\u003c\/h3\u003e\n\u003cp\u003eThe Paracorr Type 2 is engineered for both the human eye and the camera sensor. For visual observers, it delivers expansive, \"spacewalk\" views where star clusters resolve into glittering dust across the entire field. For astrophotographers using sensors up to APS-C size, it produces a flat, corrected field essential for creating professional-quality images. By removing the Tunable Top, the Paracorr connects to standard imaging adapters to achieve the 55mm back focus common to most cameras.\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\u003eSeamless Integration Into Your Workflow\u003c\/h3\u003e\n\u003cp\u003eDesigned for practical use in the field, the Paracorr Type 2 slides into any standard 2-inch focuser and features a non-marring brass clamp ring to secure your eyepieces. The barrel is threaded to accept standard 2-inch filters, a significant convenience that allows you to add a nebula or light pollution filter to the corrector itself. This means you can switch eyepieces without having to thread and unthread your filter each time, saving valuable time under dark 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\u003eThe View from an f\/4 Dobsonian\u003c\/h3\u003e\n\u003cp\u003eCenter the Andromeda Galaxy in a wide-field eyepiece with an f\/4 Newtonian, and the core is brilliant. But without correction, the outer star fields dissolve into a swirl of seagull-shaped stars. Now, add the Paracorr. As your eye adapts, the view transforms. The outer third of the field snaps into focus, revealing countless individual stars in M32 and NGC 205 as sharp, distinct points. The experience is no longer just about the galaxy's core, but about its full, majestic context in a perfectly rendered starfield.\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\u003eChoosing Your Paracorr: Type 2 vs. Big Paracorr\u003c\/h3\u003e\n\u003cp\u003eTele Vue offers two main Paracorr models, and the choice is determined by your telescope's hardware and intended use.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eParacorr Type 2 (this model):\u003c\/strong\u003e This is the standard for visual observers and imagers using telescopes with 2-inch focusers. It provides excellent correction for eyepieces and camera sensors up to APS-C format (approx. 30mm diagonal). If your scope has a 2-inch focuser, this is the correct choice.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBig Paracorr Type 2:\u003c\/strong\u003e This model is designed for large, professional-grade instruments with 3-inch focusers. It offers a larger corrected field to illuminate full-frame sensors (43mm diagonal) and beyond. The Big Paracorr is the right choice only if you have a 3-inch or larger focuser and are using very large imaging sensors.\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\"\u003eDo I need a Paracorr for my f\/6 or f\/8 telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. Coma becomes visually apparent in telescopes faster than f\/6. For f\/6 and slower systems, the effect is typically minimal and a coma corrector is not necessary for visual use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Paracorr Type 2 work with all my eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, that is the purpose of the \"Tunable Top.\" By adjusting the height setting according to the included chart, you can optimize the Paracorr's performance for virtually any 1.25\" or 2\" eyepiece, from Plössls to ultra-wide Naglers and Ethos.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 1.15x magnification affect my views?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou must account for it when calculating magnification. For example, a 10mm eyepiece in a 1000mm focal length telescope normally yields 100x. With the Paracorr, the effective focal length becomes 1150mm (1000 x 1.15), yielding 115x. This also slightly darkens the sky background, which can enhance contrast on faint objects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Paracorr Type 2 good for astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is excellent for imaging with fast Newtonians. It provides a well-corrected field for camera sensors up to APS-C size. For full-frame sensors, the Big Paracorr Type 2 is recommended to avoid vignetting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill I need to re-focus after inserting the Paracorr?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Paracorr slightly changes the focal point of the telescope, requiring minor re-focusing. It is designed to minimize the change, but some adjustment will be needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between the Paracorr Type 1 and Type 2?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Type 2 is a more advanced design that offers better correction, especially at very fast f-ratios like f\/3 and f\/3.5. It also features the Tunable Top for better eyepiece optimization, which the original Type 1 lacked.\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\u003eProduct Number\u003c\/td\u003e\n\u003ctd\u003eVIP-2010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eComa Corrector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e2-inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification Factor\u003c\/td\u003e\n\u003ctd\u003e1.15x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003e4 elements, multi-coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eNewtonian reflectors down to f\/3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.1 lbs \/ 17.6 oz \/ 499g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e4.25\" \/ 108mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Support\u003c\/td\u003e\n\u003ctd\u003eThreads for 2-inch filters\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\"\u003eTele Vue Paracorr Type 2 Coma Corrector\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\"\u003e1.25\" Eyepiece Adapter\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\"\u003eEyepiece Dust Cap (Top)\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\"\u003eBarrel Dust Cap (Bottom)\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\/Tele_Vue_Paracorr_Type_2_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\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223879614749,"sku":"TV-VIP-2010","price":808.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_Paracorr_Type_2_1.jpg?v=1777515028"},{"product_id":"tele-vue-big-paracorr-type-2","title":"Tele Vue Big Paracorr Type 2","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCorrects Coma in Newtonian Reflectors\u003c\/li\u003e\n\u003cli\u003eFor f\/3 to f\/6 Parabolic Mirrors\u003c\/li\u003e\n\u003cli\u003e1.15x Magnification Factor\u003c\/li\u003e\n\u003cli\u003eDesigned for 3-inch Focusers\u003c\/li\u003e\n\u003cli\u003ePrevents Vignetting on Large Sensors\u003c\/li\u003e\n\u003cli\u003eAdjustable \"Tunable Top\" for Optimization\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\u003eManual\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\u003ePinpoint Stars to the Edge of Full-Frame Sensors\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue Big Paracorr Type 2 is a specialized optical corrector designed to solve one fundamental problem: the comatic aberration inherent in fast Newtonian reflectors. For astro-imagers using large sensors or visual observers with ultra-wide eyepieces, this device transforms distorted, comet-shaped stars at the edge of the field into sharp, round pinpoints, effectively making your mirror's full potential visible from corner to corner.\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 Physics of a Flawless Field\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the Big Paracorr is a multi-element, high-index glass optical system engineered to counteract the physics of a parabolic mirror. Mirrors faster than f\/6 naturally produce coma, an aberration that elongates stars as you move away from the central axis. The Paracorr's lenses introduce an equal but opposite correction, ensuring light rays from across the entire field come to a sharp, symmetrical focus on your camera sensor or at the eyepiece.\u003c\/p\u003e\n\u003cp\u003eThe visual result is a radical improvement in edge-of-field performance. On a full-frame image of a dense star field like the Perseus Double Cluster, stars that would appear as distracting seagulls or crescents become tight, point-like sources. This allows you to use the entire frame for your composition, no longer needing to crop away the distorted outer third of your 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\u003eEngineered for Large-Format Illumination\u003c\/h3\u003e\n\u003cp\u003eThe \"Big\" in Big Paracorr is a direct reference to its 3-inch barrel format. This larger diameter is not for vanity; it is a mechanical necessity for illuminating sensors with diagonals of 43mm (full-frame) or larger without vignetting. A standard 2-inch corrector would cause the image brightness to fall off dramatically in the corners of a large sensor, but the Big Paracorr's wide body and oversized lenses provide an even, un-clipped light cone.\u003c\/p\u003e\n\u003cp\u003eThis makes it the right choice for imagers who have invested in full-frame DSLR, mirrorless, or dedicated astronomy cameras. It ensures that your flat frames are correcting for minor dust and gradients, not for a fundamental vignetting issue caused by an undersized corrector. The result is higher signal-to-noise in the corners and a more uniform final image.\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\u003eDialing in Perfection with the Tunable Top\u003c\/h3\u003e\n\u003cp\u003eOptimal coma correction depends on the precise distance between the Paracorr's lenses and the focal plane. The Big Paracorr's \"Tunable Top\" is a calibrated, adjustable mechanism that lets you dial in this exact distance for your specific eyepiece or camera. By simply loosening a collar and rotating the top, you can match the setting to your equipment, ensuring the best possible correction.\u003c\/p\u003e\n\u003cp\u003eThis eliminates guesswork and provides a repeatable, optimized setup. For an imager, it means you can set the back focus correctly for your specific camera and filter wheel combination. For a visual observer switching between different eyepieces, it allows for quick tweaks to maintain edge-to-edge sharpness across your entire collection.\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\u003eMore Than a Corrector: The 1.15x Magnification Factor\u003c\/h3\u003e\n\u003cp\u003eThe Paracorr's design includes a slight 1.15x magnification factor. This is an integral part of how the 4-element lens system achieves its correction and should not be mistaken for a simple Barlow effect. This minor focal length increase has a secondary benefit: it slightly darkens the sky background, which can increase the contrast on faint, extended objects like galaxies and nebulae.\u003c\/p\u003e\n\u003cp\u003eThis also means your f\/4 mirror performs like an f\/4.6 system, which can make collimation slightly more forgiving. It’s a subtle but meaningful characteristic that contributes to the overall quality of the final view or image, turning your fast, wide-field instrument into a perfectly corrected, high-contrast system.\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\u003eSecure Connections for Heavy Payloads\u003c\/h3\u003e\n\u003cp\u003eRecognizing that large-format imaging involves heavy camera trains, the Big Paracorr uses threaded connections instead of simple compression rings. The back of the unit provides a 3.40\" x 24 TPI flange for attaching robust, dedicated camera adapters. This prevents any tilt or flexure that could compromise the optical correction, a critical factor when dealing with the tight tolerances of a fast optical system.\u003c\/p\u003e\n\u003cp\u003eThe primary limitation of the Big Paracorr is its requirement for a robust, 3-inch focuser and a mount capable of handling the entire imaging payload. It is a serious piece of hardware for those who require the highest level of performance from their large-aperture Newtonian.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch3\u003eChoosing Your Paracorr: Big vs. Standard Type 2\u003c\/h3\u003e\n\u003cp\u003eTele Vue offers two versions of the Paracorr Type 2, and the choice is dictated by your equipment and goals.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBig Paracorr Type 2 (this model):\u003c\/strong\u003e This is the definitive choice for imagers using sensors with a diagonal larger than 30mm (i.e., APS-C and full-frame) or visual observers using the widest 2-inch eyepieces like the Tele Vue 31mm Nagler or 21mm Ethos. It requires a 3-inch focuser to deliver its vignette-free performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParacorr Type 2 (VIP-2010):\u003c\/strong\u003e The standard 2-inch model is optically identical and provides the same level of coma correction. It is the ideal choice for telescopes with 2-inch focusers, for visual use with most eyepieces, and for imaging with cameras that have APS-C or smaller sensors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf your system can accommodate it, the Big Paracorr provides the ultimate, uncompromised illumination for the largest formats. If you use a 2-inch focuser, the standard Paracorr Type 2 delivers the same world-class coma correction in a smaller package.\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\"\u003eDo I need the Big Paracorr or the standard 2-inch Paracorr Type 2?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eChoose the Big Paracorr if you have a 3-inch focuser and use a full-frame (43mm diagonal) or larger imaging sensor. For telescopes with 2-inch focusers or if you primarily use smaller sensors (APS-C or smaller), the standard 2-inch Paracorr Type 2 is the correct choice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Big Paracorr work visually with my 2-inch eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, but you will need a 3-inch to 2-inch adapter to place your eyepiece in the Paracorr's tunable top. It is particularly effective with ultra-wide 2-inch eyepieces that can take advantage of the large, fully illuminated field it provides.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I set the correct \"Tunable Top\" position for my camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTele Vue provides charts and adapters for various camera systems. The goal is to set the Paracorr's lens-to-sensor distance to a specific value (typically around 80mm from the rear thread shoulder). You use a combination of the tunable top setting and appropriate spacers to achieve this distance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the 1.15x magnification change my f\/ratio?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it effectively multiplies your telescope's focal ratio by 1.15. For example, an f\/4 telescope will perform like an f\/4.6 system with the Paracorr. This is an integral part of the optical design that achieves the coma correction.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use 2-inch filters with the Big Paracorr?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, but you will need a camera adapter that has M48 (2-inch) filter threads. The Paracorr itself does not have filter threads on the eyepiece\/camera side, but compatible adapters from Tele Vue and other manufacturers do.\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\u003eProduct Number\u003c\/td\u003e\n\u003ctd\u003eVIP-3010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e3-inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification Factor\u003c\/td\u003e\n\u003ctd\u003e1.15x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Elements\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptimal Mirror f\/ratio\u003c\/td\u003e\n\u003ctd\u003ef\/3 to f\/6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Connection\u003c\/td\u003e\n\u003ctd\u003e3-inch Barrel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera\/Eyepiece Side Connection\u003c\/td\u003e\n\u003ctd\u003e3.40\" x 24 TPI Flange (80mm back focus)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.5 lbs (0.68 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e5.125 inches (130 mm)\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\u003cimg class=\"DAV-img-box\" alt=\"Tele Vue Big Paracorr Type 2\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/TV-VIP-3010_1.jpg?v=1794301550\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTele Vue Big Paracorr Type 2\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\u003cimg class=\"DAV-img-box\" alt=\"Tele Vue 3-inch Dust Cap\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/TeleVue-3inch-Dustcap.jpg?v=1794301666\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDust Cap (Top)\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\u003cimg class=\"DAV-img-box\" alt=\"Tele Vue Dust Cap\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/TeleVue-Dust-Cap-Bottom.jpg?v=1794301740\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDust Cap (Bottom)\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\/Tele_Vue_Big_Paracorr_Type_2_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\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223879647517,"sku":"TV-VIP-3010","price":1754.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_Big_Paracorr_Type_2_1.jpg?v=1777515019"},{"product_id":"orion-optics-uk-ag20-ag-wynne-corrector-3-0-95","title":"Orion Optics UK Wynne Corrector 3″ for AG Series Astrographs","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCorrects coma in fast parabolic (Newtonian) mirrors\u003c\/li\u003e\n\u003cli\u003eDelivers a wide, flat, and apochromatic (false-color-free) focal plane\u003c\/li\u003e\n\u003cli\u003eAdvanced optical design incorporates four elements with special glass types\u003c\/li\u003e\n\u003cli\u003eEngineered for Orion Optics UK AG astrographs and other Newtonian systems\u003c\/li\u003e\n\u003cli\u003eProvides pinpoint stars across a large imaging field\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\u003eWynne Corrector 3″ for AG Series Astrographs\u003c\/h2\u003e\n\u003cp\u003eThe Orion Optics UK 3-inch Wynne Corrector is engineered to eliminate coma in fast Newtonian astrographs, transforming the native curved focal plane of a parabolic mirror into a wide, flat, and exceptionally well-corrected field for large-format imaging sensors. Its advanced optical formula, comprising four lenses made from special rare earth glass types, delivers sharp, apochromatic stars from edge to edge. This corrector is the key to unlocking the full imaging potential of high-accuracy parabolic mirrors, ensuring that the final image is limited only by the primary optic and the seeing conditions, not the corrector.\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\u003eAdvanced Wynne Corrector: A Wide, Flat, Apochromatic Field\u003c\/h3\u003e\n\u003cp\u003eThis corrector's primary function is to create a professional-grade imaging platform from a fast Newtonian optical system. The design was computer-optimized to produce a very wide, flat, and false-color-free focal plane, enabling the use of cameras with large sensors without compromise. By employing special glass types, the optical system maintains high light throughput and neutral color balance while correcting for the severe off-axis coma inherent in fast paraboloids.\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\u003eBeyond Standard Correction: An Advanced Design for Demanding Imagers\u003c\/h3\u003e\n\u003cp\u003eWhile many correctors use a standard three-element design, Orion Optics UK found that a fourth lens was necessary to achieve the highest level of correction demanded by their precision-figured mirrors. This additional cemented doublet enhances the optical performance, ensuring that even the most subtle details are not degraded by residual aberrations. The result is a corrector designed to be a world leader, providing images so clean that even expert astrophotographers are unable to find fault.\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 makes the Orion Optics UK 3\" Wynne Corrector different from other correctors?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis corrector uses an advanced four-element optical design, which includes a cemented doublet and special rare earth glass. This goes beyond more common three-element designs to provide a higher level of correction, resulting in a wider, flatter, and false-color-free field suitable for the most accurate primary mirrors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this Wynne Corrector on a telescope other than an Orion Optics UK AG?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. While it is the standard corrector for all Orion Optics UK AG models, it was designed for versatility. It performs exceptionally well on a wide range of other manufacturers' telescopes, mirror sizes, and focal ratios. For custom systems, Orion Optics UK can provide specific spot diagrams to confirm its performance with your mirror.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of imaging results can I expect with this Wynne Corrector on my AG12 astrograph?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOn an AG12 or similar fast Newtonian, you can expect pinpoint stars across the entire imaging circle. The corrector is designed to eliminate off-axis coma, allowing you to take full advantage of large-format sensors without having to crop away distorted stars at the edges of the frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this corrector introduce false color (chromatic aberration)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the corrector is engineered to be apochromatic. The choice of four special glass elements, including rare earth types, ensures that the focal plane is free of false color, preserving the natural hues of stars and celestial objects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this Wynne Corrector help when imaging large targets like the Andromeda Galaxy (M31) with a fast Newtonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor expansive targets like the Andromeda Galaxy (M31) or the North American Nebula (NGC 7000), a wide, flat field is critical. This corrector ensures that stars remain tight and round from the galaxy's bright core all the way to the faint, outer spiral arms, allowing you to capture the entire object in a single, perfectly corrected frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this corrector suitable for the most demanding imaging applications?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. It was designed and field-tested to be a world leader in imaging performance. It is intended for serious astrophotographers who use very accurate mirrors and cannot tolerate any degradation in image quality from their optical train.\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\u003eCorrector Type\u003c\/td\u003e\n\u003ctd\u003e4-Element Wynne Coma Corrector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003e3\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Telescopes\u003c\/td\u003e\n\u003ctd\u003eOrion Optics UK AG Series and other fast Newtonian\/parabolic astrographs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eTwo single lenses and one cemented doublet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass Types\u003c\/td\u003e\n\u003ctd\u003eSpecialty and rare earth glasses\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 is an optical accessory. The contents of the box are not specified by the manufacturer.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942364803357,"sku":"OOUK-AG20-AG-WYNNE-CORRECTOR-3","price":1893.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/OrionOpticsUK-Wynne-Corrector-3-used-on-AG-series-1_6be2d89e-e76e-4a97-8a7d-7c421d9ba3d8.jpg?v=1789606879"},{"product_id":"orion-optics-uk-ag-wynne-corrector-to-fit-2-005-fli-using-40mm-bfd-with-4mm-adj","title":"Orion Optics UK AG Wynne corrector to fit 2.005\" FLI using 40mm BFD with 4mm adj","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e4-lens ED corrector for the AG Astrograph range\u003c\/li\u003e\n\u003cli\u003eMachined to fit 2.005\" FLI\u003c\/li\u003e\n\u003cli\u003e40mm back focal distance\u003c\/li\u003e\n\u003cli\u003eIndividually machined to order in the UK\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\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\u003eAG Wynne Corrector -- 2.005\" FLI\u003c\/h2\u003e\n\u003cp\u003eOrion Optics UK's AG Wynne corrector, machined to fit 2.005\" FLI with a back focal distance of 40mm. Part of the AG Astrograph range's 4-lens ED corrector system.\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\u003eFlat, Coma-Free Field\u003c\/h3\u003e\n\u003cp\u003eThe AG Wynne corrector flattens the field and removes coma across the full sensor, giving a sharp image edge to edge on the AG Astrograph range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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\u003eFits\u003c\/td\u003e\n\u003ctd\u003e2.005\" FLI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focal distance\u003c\/td\u003e\n\u003ctd\u003e40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector type\u003c\/td\u003e\n\u003ctd\u003eAG Wynne 4-lens ED corrector\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\"\u003eAG Wynne Corrector\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\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942380925213,"sku":"OOUK-AG-WYNNE-CORRECTOR-2-005","price":416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_cefbb3b9-2c06-4db3-9a22-2409ef9ca734.jpg?v=1789607238"},{"product_id":"orion-optics-uk-ag-wynne-corrector-to-fit-2-55-fli-using-50mm-4mm","title":"Orion Optics UK AG Wynne corrector to fit 2.55\" FLI using 50mm +-4mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e4-lens ED corrector for the AG Astrograph range\u003c\/li\u003e\n\u003cli\u003eMachined to fit 2.55\" FLI\u003c\/li\u003e\n\u003cli\u003eCustom back focal distance to order\u003c\/li\u003e\n\u003cli\u003eIndividually machined to order in the UK\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\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\u003eAG Wynne Corrector -- 2.55\" FLI\u003c\/h2\u003e\n\u003cp\u003eOrion Optics UK's AG Wynne corrector, machined to fit 2.55\" FLI. Part of the AG Astrograph range's 4-lens ED corrector system.\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\u003eFlat, Coma-Free Field\u003c\/h3\u003e\n\u003cp\u003eThe AG Wynne corrector flattens the field and removes coma across the full sensor, giving a sharp image edge to edge on the AG Astrograph range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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\u003eFits\u003c\/td\u003e\n\u003ctd\u003e2.55\" FLI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector type\u003c\/td\u003e\n\u003ctd\u003eAG Wynne 4-lens ED corrector\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\"\u003eAG Wynne Corrector\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\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942381023517,"sku":"OOUK-AG-WYNNE-CORRECTOR-2-55","price":416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_aec8169a-a497-4087-979c-0b4be01aa295.jpg?v=1789607249"},{"product_id":"orion-optics-uk-ag-wynne-corrector-to-fit-fli-3-thread-18mm-bfd-with-4mm-adj","title":"Orion Optics UK AG Wynne corrector to fit FLI 3\" thread 18mm BFD with 4mm adj","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e4-lens ED corrector for the AG Astrograph range\u003c\/li\u003e\n\u003cli\u003eMachined to fit FLI 3\" thread\u003c\/li\u003e\n\u003cli\u003e18mm back focal distance\u003c\/li\u003e\n\u003cli\u003eIndividually machined to order in the UK\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\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\u003eAG Wynne Corrector -- FLI 3\" thread\u003c\/h2\u003e\n\u003cp\u003eOrion Optics UK's AG Wynne corrector, machined to fit FLI 3\" thread with a back focal distance of 18mm. Part of the AG Astrograph range's 4-lens ED corrector system.\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\u003eFlat, Coma-Free Field\u003c\/h3\u003e\n\u003cp\u003eThe AG Wynne corrector flattens the field and removes coma across the full sensor, giving a sharp image edge to edge on the AG Astrograph range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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\u003eFits\u003c\/td\u003e\n\u003ctd\u003eFLI 3\" thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focal distance\u003c\/td\u003e\n\u003ctd\u003e18mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector type\u003c\/td\u003e\n\u003ctd\u003eAG Wynne 4-lens ED corrector\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\"\u003eAG Wynne Corrector\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\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942381121821,"sku":"OOUK-AG-WYNNE-CORRECTOR-FLI-3","price":416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_5fc8d29a-3a85-4f25-8b1a-75bae431a18d.jpg?v=1789607256"},{"product_id":"orion-optics-uk-ag-wynne-corrector-to-fit-3-fli-using-35mm-bfd-with-4mm-adj","title":"Orion Optics UK AG Wynne corrector to fit 3\" FLI using 35mm BFD with 4mm adj","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e4-lens ED corrector for the AG Astrograph range\u003c\/li\u003e\n\u003cli\u003eMachined to fit 3\" FLI\u003c\/li\u003e\n\u003cli\u003e35mm back focal distance\u003c\/li\u003e\n\u003cli\u003eIndividually machined to order in the UK\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\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\u003eAG Wynne Corrector -- 3\" FLI\u003c\/h2\u003e\n\u003cp\u003eOrion Optics UK's AG Wynne corrector, machined to fit 3\" FLI with a back focal distance of 35mm. Part of the AG Astrograph range's 4-lens ED corrector system.\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\u003eFlat, Coma-Free Field\u003c\/h3\u003e\n\u003cp\u003eThe AG Wynne corrector flattens the field and removes coma across the full sensor, giving a sharp image edge to edge on the AG Astrograph range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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\u003eFits\u003c\/td\u003e\n\u003ctd\u003e3\" FLI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focal distance\u003c\/td\u003e\n\u003ctd\u003e35mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector type\u003c\/td\u003e\n\u003ctd\u003eAG Wynne 4-lens ED corrector\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\"\u003eAG Wynne Corrector\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\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942381220125,"sku":"OOUK-AG-WYNNE-CORRECTOR-3-FLI","price":416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_be399f47-aae9-4769-a496-c7d9ddd40107.jpg?v=1789607264"},{"product_id":"orion-optics-uk-ag-wynne-corrector-to-fit-atlas-to-3-moag-using-7mm-bfd","title":"Orion Optics UK AG Wynne corrector to fit Atlas to 3\" MOAG using 7mm BFD","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e4-lens ED corrector for the AG Astrograph range\u003c\/li\u003e\n\u003cli\u003eMachined to fit Atlas to 3\" MOAG\u003c\/li\u003e\n\u003cli\u003e7mm back focal distance\u003c\/li\u003e\n\u003cli\u003eIndividually machined to order in the UK\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\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\u003eAG Wynne Corrector -- Atlas to 3\" MOAG\u003c\/h2\u003e\n\u003cp\u003eOrion Optics UK's AG Wynne corrector, machined to fit Atlas to 3\" MOAG with a back focal distance of 7mm. Part of the AG Astrograph range's 4-lens ED corrector system.\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\u003eFlat, Coma-Free Field\u003c\/h3\u003e\n\u003cp\u003eThe AG Wynne corrector flattens the field and removes coma across the full sensor, giving a sharp image edge to edge on the AG Astrograph range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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\u003eFits\u003c\/td\u003e\n\u003ctd\u003eAtlas to 3\" MOAG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focal distance\u003c\/td\u003e\n\u003ctd\u003e7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector type\u003c\/td\u003e\n\u003ctd\u003eAG Wynne 4-lens ED corrector\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\"\u003eAG Wynne Corrector\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\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942381318429,"sku":"OOUK-AG-WYNNE-CORRECTOR-ATLAS-3","price":416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_8edf4c0d-2ead-4bdf-a297-e6641519d964.jpg?v=1789607272"},{"product_id":"orion-optics-uk-ag-wynne-corrector-to-fit-moravian-m68x1-using-31mm-bfd","title":"Orion Optics UK AG Wynne corrector to fit Moravian M68x1 using 31mm BFD","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e4-lens ED corrector for the AG Astrograph range\u003c\/li\u003e\n\u003cli\u003eMachined to fit Moravian M68x1\u003c\/li\u003e\n\u003cli\u003e31mm back focal distance\u003c\/li\u003e\n\u003cli\u003eIndividually machined to order in the UK\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\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\u003eAG Wynne Corrector -- Moravian M68x1\u003c\/h2\u003e\n\u003cp\u003eOrion Optics UK's AG Wynne corrector, machined to fit Moravian M68x1 with a back focal distance of 31mm. Part of the AG Astrograph range's 4-lens ED corrector system.\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\u003eFlat, Coma-Free Field\u003c\/h3\u003e\n\u003cp\u003eThe AG Wynne corrector flattens the field and removes coma across the full sensor, giving a sharp image edge to edge on the AG Astrograph range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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\u003eFits\u003c\/td\u003e\n\u003ctd\u003eMoravian M68x1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focal distance\u003c\/td\u003e\n\u003ctd\u003e31mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector type\u003c\/td\u003e\n\u003ctd\u003eAG Wynne 4-lens ED corrector\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\"\u003eAG Wynne Corrector\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\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942381416733,"sku":"OOUK-AG-WYNNE-CORRECTOR-MORAVIAN-M68X1","price":416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_0dae49b2-9c8d-414a-bdbe-9dd7af3303cd.jpg?v=1789607280"},{"product_id":"orion-optics-uk-ag-wynne-corrector-fit-atlas-70mm-oag-3-5mmbfd-4mm","title":"Orion Optics UK AG Wynne corrector fit Atlas-70mm OAG 3.5mmBFD +-4mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e4-lens ED corrector for the AG Astrograph range\u003c\/li\u003e\n\u003cli\u003eMachined to fit Atlas-70mm OAG\u003c\/li\u003e\n\u003cli\u003e3.5mm back focal distance\u003c\/li\u003e\n\u003cli\u003eIndividually machined to order in the UK\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\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\u003eAG Wynne Corrector -- Atlas-70mm OAG\u003c\/h2\u003e\n\u003cp\u003eOrion Optics UK's AG Wynne corrector, machined to fit Atlas-70mm OAG with a back focal distance of 3.5mm. Part of the AG Astrograph range's 4-lens ED corrector system.\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\u003eFlat, Coma-Free Field\u003c\/h3\u003e\n\u003cp\u003eThe AG Wynne corrector flattens the field and removes coma across the full sensor, giving a sharp image edge to edge on the AG Astrograph range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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\u003eFits\u003c\/td\u003e\n\u003ctd\u003eAtlas-70mm OAG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focal distance\u003c\/td\u003e\n\u003ctd\u003e3.5mm (±4mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector type\u003c\/td\u003e\n\u003ctd\u003eAG Wynne 4-lens ED corrector\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\"\u003eAG Wynne Corrector\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\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942381515037,"sku":"OOUK-AG-WYNNE-CORRECTOR-ATLAS-70MM","price":416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_51353871-5ee8-4195-85da-84037a18700a.jpg?v=1789607288"},{"product_id":"orion-optics-uk-ag-wynne-corrector-to-fit-sbig-using-35mm-bfd-with-4mm-adj","title":"Orion Optics UK AG Wynne corrector to fit SBIG using 35mm BFD with +-4mm adj","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e4-lens ED corrector for the AG Astrograph range\u003c\/li\u003e\n\u003cli\u003eMachined to fit SBIG\u003c\/li\u003e\n\u003cli\u003e35mm back focal distance\u003c\/li\u003e\n\u003cli\u003eIndividually machined to order in the UK\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\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\u003eAG Wynne Corrector -- SBIG\u003c\/h2\u003e\n\u003cp\u003eOrion Optics UK's AG Wynne corrector, machined to fit SBIG with a back focal distance of 35mm. Part of the AG Astrograph range's 4-lens ED corrector system.\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\u003eFlat, Coma-Free Field\u003c\/h3\u003e\n\u003cp\u003eThe AG Wynne corrector flattens the field and removes coma across the full sensor, giving a sharp image edge to edge on the AG Astrograph range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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\u003eFits\u003c\/td\u003e\n\u003ctd\u003eSBIG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focal distance\u003c\/td\u003e\n\u003ctd\u003e35mm (±4mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector type\u003c\/td\u003e\n\u003ctd\u003eAG Wynne 4-lens ED corrector\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\"\u003eAG Wynne Corrector\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\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942381613341,"sku":"OOUK-AG-WYNNE-CORRECTOR-SBIG-35MM","price":416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_d7124bc2-90d2-4647-b21f-7549c21ed80d.jpg?v=1789607296"},{"product_id":"orion-optics-uk-ag-wynne-corrector-to-fit-sbig-using-41mm-bfd-with-4mm-adj","title":"Orion Optics UK AG Wynne corrector to fit SBIG using 41mm BFD with +-4mm adj","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eWynne-Type Coma Corrector\u003c\/li\u003e\n\u003cli\u003eOptimized for Orion Optics UK AG Telescopes\u003c\/li\u003e\n\u003cli\u003eDesigned for SBIG Imaging Cameras\u003c\/li\u003e\n\u003cli\u003e41mm Nominal Back Focus Distance\u003c\/li\u003e\n\u003cli\u003eProvides ±4mm of Fine Adjustment\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\u003eAG Wynne corrector to fit SBIG using 41mm BFD with +-4mm adj\u003c\/h2\u003e\n\u003cp\u003eDesigned by Orion Optics UK for their fast AG-series astrographs, this AG Wynne corrector delivers a flat, coma-free field for SBIG cameras by establishing a precise 41mm back focus distance, which can be fine-tuned with a ±4mm adjustment range to achieve critical sensor placement.\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\u003eComa Correction for Orion Optics AG Astrographs\u003c\/h3\u003e\n\u003cp\u003eFast Newtonian astrographs, like the Orion Optics UK AG series, naturally produce off-axis coma, an aberration that elongates stars into comet-like shapes away from the center of the field. This Wynne corrector is optically matched to the AG system to cancel this aberration, ensuring stars remain sharp, round pinpoints across the entire imaging sensor.\u003c\/p\u003e\n\u003cp\u003eEach corrector is manufactured to the same high standards as Orion Optics UK's primary mirrors. This ensures that the correction does not introduce other aberrations and preserves the high-resolution performance of the main optical system, which is essential for \"elite astrophotography.\"\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\u003ePrecision 41mm Back Focus for SBIG Cameras\u003c\/h3\u003e\n\u003cp\u003eA corrector's performance is critically dependent on the distance between its rear lens element and the camera's sensor. This model is engineered with a specific 41mm back focus distance (BFD) to perfectly match the mechanical requirements of SBIG camera bodies, removing guesswork from the setup process.\u003c\/p\u003e\n\u003cp\u003eThe integrated ±4mm adjustment range provides the necessary flexibility to accommodate the added path length of accessories like filter wheels or off-axis guiders. This allows you to dial in the exact spacing required for perfect correction across the field, ensuring your final images are free of optical errors.\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 primary function of this Orion Optics UK AG Wynne corrector?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary function of this corrector is to eliminate \u003cstrong\u003ecoma\u003c\/strong\u003e, an optical aberration inherent in fast Newtonian telescopes like the Orion Optics AG series. It ensures that stars are rendered as sharp points across the entire field of view, which is critical for high-resolution astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is this Wynne corrector specific to SBIG cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis corrector is mechanically and optically designed to provide a nominal \u003cstrong\u003eback focus distance of 41mm\u003c\/strong\u003e. This specific distance matches the flange-to-sensor distance of many SBIG cameras, ensuring proper spacing for optimal optical correction without requiring a complex set of adapters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I use the ±4mm adjustment on this AG Wynne corrector?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ±4mm adjustment is used for fine-tuning the back focus. If you add a component like a filter wheel or off-axis guider into your imaging train, it increases the optical path length. The adjustment allows you to compensate for this added distance to restore the perfect 41mm spacing between the corrector and the sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Orion Optics UK corrector work with a non-SBIG camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile it might be physically possible to attach another camera, it is not recommended. The corrector's optical performance is optimized for the 41mm back focus. A camera with a different back focus (e.g., 55mm for many CMOS\/DSLR cameras) would require additional, precise adapters and may not achieve the same level of correction.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have an Orion Optics AG12 and an SBIG camera with a filter wheel. Is this the right corrector?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this corrector is an ideal match. The Orion Optics AG12 is precisely the type of instrument this corrector is designed for. The ±4mm adjustment range is specifically included to help you achieve the correct 41mm spacing after accounting for the thickness of your filter wheel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this corrector suitable for visual use with an eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this is a dedicated photographic corrector. It is not designed to work with eyepieces and will not reach focus for visual observation. Its purpose is solely to create a corrected, flat field for an imaging sensor placed at a specific back focus distance.\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\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942381711645,"sku":"OOUK-AG-WYNNE-CORRECTOR-SBIG-41MM","price":416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_8816d8d3-658f-479a-bbcb-dc26637fb5b5.jpg?v=1789607304"},{"product_id":"orion-optics-uk-ag-w-c-to-fit-sbig-stx-16803-89dia-dt-50mm-bfd-4mm-adj","title":"Orion Optics UK AG W-C to fit SBIG STX 16803 89dia DT- 50mm BFD 4mm adj","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e4-lens ED corrector for the AG Astrograph range\u003c\/li\u003e\n\u003cli\u003eMachined to fit SBIG STX 16803 89dia DT-\u003c\/li\u003e\n\u003cli\u003e50mm back focal distance\u003c\/li\u003e\n\u003cli\u003eIndividually machined to order in the UK\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\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\u003eAG Wynne Corrector -- SBIG STX 16803 89dia DT-\u003c\/h2\u003e\n\u003cp\u003eOrion Optics UK's AG Wynne corrector, machined to fit SBIG STX 16803 89dia DT- with a back focal distance of 50mm. Part of the AG Astrograph range's 4-lens ED corrector system.\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\u003eFlat, Coma-Free Field\u003c\/h3\u003e\n\u003cp\u003eThe AG Wynne corrector flattens the field and removes coma across the full sensor, giving a sharp image edge to edge on the AG Astrograph range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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\u003eFits\u003c\/td\u003e\n\u003ctd\u003eSBIG STX 16803 89dia DT-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focal distance\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector type\u003c\/td\u003e\n\u003ctd\u003eAG Wynne 4-lens ED corrector\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\"\u003eAG Wynne Corrector\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\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942381809949,"sku":"OOUK-AG-W-C-SBIG-STX","price":416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_0a1bbc80-0dd8-4d08-9c34-a4f4dbe6a247.jpg?v=1789607312"},{"product_id":"orion-optics-uk-ag-wynne-corr-to-sbig-t-thread-using-61mm-bfd-with-4mm-adj","title":"Orion Optics UK AG Wynne Corr to SBIG T thread using 61mm BFD with 4mm adj","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e4-lens ED corrector for the AG Astrograph range\u003c\/li\u003e\n\u003cli\u003eMachined to fit SBIG T thread\u003c\/li\u003e\n\u003cli\u003e61mm back focal distance\u003c\/li\u003e\n\u003cli\u003eIndividually machined to order in the UK\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\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\u003eAG Wynne Corrector -- SBIG T thread\u003c\/h2\u003e\n\u003cp\u003eOrion Optics UK's AG Wynne corrector, machined to fit SBIG T thread with a back focal distance of 61mm. Part of the AG Astrograph range's 4-lens ED corrector system.\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\u003eFlat, Coma-Free Field\u003c\/h3\u003e\n\u003cp\u003eThe AG Wynne corrector flattens the field and removes coma across the full sensor, giving a sharp image edge to edge on the AG Astrograph range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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\u003eFits\u003c\/td\u003e\n\u003ctd\u003eSBIG T thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focal distance\u003c\/td\u003e\n\u003ctd\u003e61mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector type\u003c\/td\u003e\n\u003ctd\u003eAG Wynne 4-lens ED corrector\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\"\u003eAG Wynne Corrector\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\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942382039325,"sku":"OOUK-AG-WYNNE-CORR-SBIG-T","price":416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_285b7fa0-517b-4312-90f0-6a89c58b0c57.jpg?v=1789607320"},{"product_id":"orion-optics-uk-ag-wynne-corrector-to-fit-stl-dovetail-using-12mm-bfd-with-4mm","title":"Orion Optics UK AG Wynne corrector to fit STL dovetail using 12mm BFD with+-4mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e4-lens ED corrector for the AG Astrograph range\u003c\/li\u003e\n\u003cli\u003eMachined to fit STL dovetail\u003c\/li\u003e\n\u003cli\u003e12mm back focal distance\u003c\/li\u003e\n\u003cli\u003eIndividually machined to order in the UK\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\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\u003eAG Wynne Corrector -- STL dovetail\u003c\/h2\u003e\n\u003cp\u003eOrion Optics UK's AG Wynne corrector, machined to fit STL dovetail with a back focal distance of 12mm. Part of the AG Astrograph range's 4-lens ED corrector system.\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\u003eFlat, Coma-Free Field\u003c\/h3\u003e\n\u003cp\u003eThe AG Wynne corrector flattens the field and removes coma across the full sensor, giving a sharp image edge to edge on the AG Astrograph range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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\u003eFits\u003c\/td\u003e\n\u003ctd\u003eSTL dovetail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focal distance\u003c\/td\u003e\n\u003ctd\u003e12mm (±4mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector type\u003c\/td\u003e\n\u003ctd\u003eAG Wynne 4-lens ED corrector\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\"\u003eAG Wynne Corrector\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\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942382170397,"sku":"OOUK-AG-WYNNE-CORRECTOR-STL-DOVETAIL","price":416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_d12eedef-ef94-47d0-aee9-c55731b57499.jpg?v=1789607328"},{"product_id":"orion-optics-uk-ag-wynne-corrector-to-fit-stl-using-21mm-bfd-with-4mm-adj","title":"Orion Optics UK AG Wynne corrector to fit STL using 21mm BFD with +-4mm adj","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e4-lens ED corrector for the AG Astrograph range\u003c\/li\u003e\n\u003cli\u003eMachined to fit STL\u003c\/li\u003e\n\u003cli\u003e21mm back focal distance\u003c\/li\u003e\n\u003cli\u003eIndividually machined to order in the UK\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\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\u003eAG Wynne Corrector -- STL\u003c\/h2\u003e\n\u003cp\u003eOrion Optics UK's AG Wynne corrector, machined to fit STL with a back focal distance of 21mm. Part of the AG Astrograph range's 4-lens ED corrector system.\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\u003eFlat, Coma-Free Field\u003c\/h3\u003e\n\u003cp\u003eThe AG Wynne corrector flattens the field and removes coma across the full sensor, giving a sharp image edge to edge on the AG Astrograph range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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\u003eFits\u003c\/td\u003e\n\u003ctd\u003eSTL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focal distance\u003c\/td\u003e\n\u003ctd\u003e21mm (±4mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector type\u003c\/td\u003e\n\u003ctd\u003eAG Wynne 4-lens ED corrector\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\"\u003eAG Wynne Corrector\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\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942382268701,"sku":"OOUK-AG-WYNNE-CORRECTOR-STL-21MM","price":416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_ad42d78d-a207-46ac-9157-e7a77eca420f.jpg?v=1789607336"},{"product_id":"orion-optics-uk-ag-wynne-corrector-to-fit-stl-using-25mm-bfd-with-4mm-adj","title":"Orion Optics UK AG Wynne corrector to fit STL using 25mm BFD with +-4mm adj","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e4-lens ED corrector for the AG Astrograph range\u003c\/li\u003e\n\u003cli\u003eMachined to fit STL\u003c\/li\u003e\n\u003cli\u003e25mm back focal distance\u003c\/li\u003e\n\u003cli\u003eIndividually machined to order in the UK\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\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\u003eAG Wynne Corrector -- STL\u003c\/h2\u003e\n\u003cp\u003eOrion Optics UK's AG Wynne corrector, machined to fit STL with a back focal distance of 25mm. Part of the AG Astrograph range's 4-lens ED corrector system.\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\u003eFlat, Coma-Free Field\u003c\/h3\u003e\n\u003cp\u003eThe AG Wynne corrector flattens the field and removes coma across the full sensor, giving a sharp image edge to edge on the AG Astrograph range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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\u003eFits\u003c\/td\u003e\n\u003ctd\u003eSTL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focal distance\u003c\/td\u003e\n\u003ctd\u003e25mm (±4mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector type\u003c\/td\u003e\n\u003ctd\u003eAG Wynne 4-lens ED corrector\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\"\u003eAG Wynne Corrector\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\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942382367005,"sku":"OOUK-AG-WYNNE-CORRECTOR-STL-25MM","price":416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_cad381ea-674d-495b-a54e-28372c42e814.jpg?v=1789607344"},{"product_id":"orion-optics-uk-ag-wynne-corrector-to-fit-stl-using-31mm-bfd-with-2mm-adj","title":"Orion Optics UK AG Wynne corrector to fit STL using 31mm BFD with +-2mm adj","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e4-lens ED corrector for the AG Astrograph range\u003c\/li\u003e\n\u003cli\u003eMachined to fit STL\u003c\/li\u003e\n\u003cli\u003e31mm back focal distance\u003c\/li\u003e\n\u003cli\u003eIndividually machined to order in the UK\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\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\u003eAG Wynne Corrector -- STL\u003c\/h2\u003e\n\u003cp\u003eOrion Optics UK's AG Wynne corrector, machined to fit STL with a back focal distance of 31mm. Part of the AG Astrograph range's 4-lens ED corrector system.\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\u003eFlat, Coma-Free Field\u003c\/h3\u003e\n\u003cp\u003eThe AG Wynne corrector flattens the field and removes coma across the full sensor, giving a sharp image edge to edge on the AG Astrograph range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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\u003eFits\u003c\/td\u003e\n\u003ctd\u003eSTL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focal distance\u003c\/td\u003e\n\u003ctd\u003e31mm (±2mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector type\u003c\/td\u003e\n\u003ctd\u003eAG Wynne 4-lens ED corrector\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\"\u003eAG Wynne Corrector\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\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942382498077,"sku":"OOUK-AG-WYNNE-CORRECTOR-STL-31MM","price":416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_fc8af938-28b1-45f0-bc66-ca83c22f26d1.jpg?v=1789607351"},{"product_id":"orion-optics-uk-ag-wynne-corrector-to-fit-fw8stl-using-33mm-bfd-4mm","title":"Orion Optics UK AG Wynne corrector to fit FW8STL using 33mm BFD+-4mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e4-lens ED corrector for the AG Astrograph range\u003c\/li\u003e\n\u003cli\u003eMachined to fit FW8STL\u003c\/li\u003e\n\u003cli\u003e33mm back focal distance\u003c\/li\u003e\n\u003cli\u003eIndividually machined to order in the UK\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\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\u003eAG Wynne Corrector -- FW8STL\u003c\/h2\u003e\n\u003cp\u003eOrion Optics UK's AG Wynne corrector, machined to fit FW8STL with a back focal distance of 33mm. Part of the AG Astrograph range's 4-lens ED corrector system.\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\u003eFlat, Coma-Free Field\u003c\/h3\u003e\n\u003cp\u003eThe AG Wynne corrector flattens the field and removes coma across the full sensor, giving a sharp image edge to edge on the AG Astrograph range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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\u003eFits\u003c\/td\u003e\n\u003ctd\u003eFW8STL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focal distance\u003c\/td\u003e\n\u003ctd\u003e33mm (±4mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector type\u003c\/td\u003e\n\u003ctd\u003eAG Wynne 4-lens ED corrector\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\"\u003eAG Wynne Corrector\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\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942382596381,"sku":"OOUK-AG-WYNNE-CORRECTOR-FW8STL-33MM","price":416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_e56406ce-b003-40b3-8bcb-2290453c04a4.jpg?v=1789607360"},{"product_id":"orion-optics-uk-ag-wynne-corrector-to-fit-stl-using-35mm-bfd-with-4mm-adj","title":"Orion Optics UK AG Wynne corrector to fit STL using 35mm BFD with 4mm adj","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e4-lens ED corrector for the AG Astrograph range\u003c\/li\u003e\n\u003cli\u003eMachined to fit STL\u003c\/li\u003e\n\u003cli\u003e35mm back focal distance\u003c\/li\u003e\n\u003cli\u003eIndividually machined to order in the UK\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\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\u003eAG Wynne Corrector -- STL\u003c\/h2\u003e\n\u003cp\u003eOrion Optics UK's AG Wynne corrector, machined to fit STL with a back focal distance of 35mm. Part of the AG Astrograph range's 4-lens ED corrector system.\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\u003eFlat, Coma-Free Field\u003c\/h3\u003e\n\u003cp\u003eThe AG Wynne corrector flattens the field and removes coma across the full sensor, giving a sharp image edge to edge on the AG Astrograph range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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\u003eFits\u003c\/td\u003e\n\u003ctd\u003eSTL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focal distance\u003c\/td\u003e\n\u003ctd\u003e35mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector type\u003c\/td\u003e\n\u003ctd\u003eAG Wynne 4-lens ED corrector\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\"\u003eAG Wynne Corrector\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\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942382694685,"sku":"OOUK-AG-WYNNE-CORRECTOR-STL-35MM","price":416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_838260b8-04a7-4b54-a859-60bc78804931.jpg?v=1789607368"},{"product_id":"orion-optics-uk-ag-wynne-corrector-to-fit-tak72-using-35mm-bfd-with-4mm-adj","title":"Orion Optics UK AG Wynne Corrector for Takahashi TAK72","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCustom-designed AG Wynne corrector for the Takahashi TAK72\u003c\/li\u003e\n\u003cli\u003eEngineered for a 35mm back focus distance (BFD)\u003c\/li\u003e\n\u003cli\u003eProvides +4mm of fine adjustment for sensor spacing\u003c\/li\u003e\n\u003cli\u003eHand-figured optics from Orion Optics UK\u003c\/li\u003e\n\u003cli\u003eOptimized for elite, flat-field astrophotography\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\u003eOrion Optics UK AG Wynne Corrector for Takahashi TAK72\u003c\/h2\u003e\n\u003cp\u003eThe Orion Optics UK AG Wynne Corrector is engineered specifically for the Takahashi TAK72, delivering a flat, corrected field for elite astrophotography with a precise 35mm back focus distance. This corrector provides a +4mm adjustment range, ensuring perfect sensor-to-corrector spacing for a variety of cameras and filter setups.\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\u003e35mm Back Focus Design for the Takahashi TAK72\u003c\/h3\u003e\n\u003cp\u003eThis corrector transforms the TAK72 into a capable astrograph by eliminating field curvature and other aberrations, ensuring sharp stars across the entire frame. The optical design is optimized for a nominal 35mm back focus, a common standard for modern astronomy cameras. Each corrector features hand-figured optics, a hallmark of Orion Optics UK's commitment to creating components that meet the demands of serious imagers.\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\u003e+4mm Adjustment: Fine-Tuning Your Imaging Train\u003c\/h3\u003e\n\u003cp\u003eAchieving perfect back focus is critical for edge-of-field sharpness. This AG Wynne corrector integrates a +4mm adjustment mechanism, giving you the flexibility to compensate for variations in your imaging train. This fine control is essential for accommodating the different optical path lengths introduced by filter wheels, off-axis guiders, or various camera adapters, allowing you to dial in the exact 35mm spacing required for optimal performance.\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 back focus distance for the Orion Optics UK AG Wynne corrector for the TAK72?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe corrector is designed for a nominal \u003cstrong\u003e35mm back focus distance\u003c\/strong\u003e (BFD). This is the required distance from the corrector's mounting flange to your camera's sensor plane for optimal optical correction.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I use the +4mm adjustment on the AG Wynne corrector when imaging the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e+4mm adjustment\u003c\/strong\u003e allows you to fine-tune the 35mm back focus. For example, if your camera and adapters provide exactly 35mm of spacing, you would start with the adjuster at its nominal position. If you add a filter that increases the optical path length, you would use the adjustment to slightly increase the mechanical distance to compensate and maintain sharp stars on M31's faint outer arms.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this Orion Optics UK AG Wynne corrector compatible with telescopes other than the Takahashi TAK72?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this corrector is specifically designed and optically matched to the Takahashi TAK72 telescope. Using it with other instruments, even those with similar focal lengths or ratios, will not produce the intended flat, corrected field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is a Wynne corrector necessary for astrophotography with the TAK72?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eLike most fast refractors, the TAK72 produces a curved focal plane. While this is not noticeable during visual observation, a camera sensor is perfectly flat and will record elongated or out-of-focus stars at the edges and corners of an image. An AG Wynne corrector flattens this field, ensuring that stars are sharp and round across the entire sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this AG Wynne corrector work on my 8\" f\/4 Orion Optics UK Newtonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This corrector is designed for the optical system of the Takahashi TAK72 refractor. An f\/4 Newtonian requires a different type of corrector, known as a coma corrector, to address the specific aberrations inherent in parabolic mirrors. This Wynne corrector will not correct for coma.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does \"hand-figured\" mean for this Orion Optics UK corrector?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\"Hand-figured\" means that a skilled optician has performed the final shaping and polishing of the optical surfaces by hand, testing them repeatedly to achieve a higher degree of accuracy than is typically possible with purely automated mass production. This process ensures each corrector meets Orion Optics UK's high standards for elite astrophotography.\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\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942382792989,"sku":"OOUK-AG-WYNNE-CORRECTOR-TAK72-35MM","price":416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_ff547d8f-21bb-4e23-a20f-026610434645.jpg?v=1789607376"},{"product_id":"orion-optics-uk-ag-wynne-corrector-c-mount-adaptor-camera-needs-18mm-3mmbfd","title":"Orion Optics UK AG Wynne corrector C Mount Adaptor camera needs 18mm+-3mmBFD","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e4-lens ED corrector for the AG Astrograph range\u003c\/li\u003e\n\u003cli\u003eMachined to fit AG Wynne corrector C Mount Adaptor camera needs 18mm+-\u003c\/li\u003e\n\u003cli\u003e3mm back focal distance\u003c\/li\u003e\n\u003cli\u003eIndividually machined to order in the UK\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\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\u003eAG Wynne Corrector -- AG Wynne corrector C Mount Adaptor camera needs 18mm+-\u003c\/h2\u003e\n\u003cp\u003eOrion Optics UK's AG Wynne corrector, machined to fit AG Wynne corrector C Mount Adaptor camera needs 18mm+- with a back focal distance of 3mm. Part of the AG Astrograph range's 4-lens ED corrector system.\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\u003eFlat, Coma-Free Field\u003c\/h3\u003e\n\u003cp\u003eThe AG Wynne corrector flattens the field and removes coma across the full sensor, giving a sharp image edge to edge on the AG Astrograph range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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\u003eFits\u003c\/td\u003e\n\u003ctd\u003eAG Wynne corrector C Mount Adaptor camera needs 18mm+-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack focal distance\u003c\/td\u003e\n\u003ctd\u003e3mm (±3mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector type\u003c\/td\u003e\n\u003ctd\u003eAG Wynne 4-lens ED corrector\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\"\u003eAG Wynne Corrector\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\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942382891293,"sku":"OOUK-AG-WYNNE-CORRECTOR-C-MOUNT","price":416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_21116459-71f8-4735-821d-a0737f6991d7.jpg?v=1789607384"}],"url":"https:\/\/davidastro.com\/collections\/coma-correctors.oembed","provider":"David Astro","version":"1.0","type":"link"}