{"title":"Lunettes apochromatiques SVBONY SV550","description":"\u003cp\u003eLes lunettes SVBONY SV550 sont des apochromatiques conçues pour des vues sans chromatisme et l'imagerie du ciel profond. La 80mm f\/6 est un triplet APO de 480mm de focale, un format polyvalent pour les nébuleuses et les champs de galaxies, et la 122mm apporte plus d'ouverture pour la finesse des détails et la lumière. La collection comprend aussi l'aplanisseur de champ SV209 1.0x conçu pour la SV550 80F6, qui donne un champ plat sur tout le capteur.\u003c\/p\u003e\u003cp\u003eLes deux tubes sont vendus seuls.\u003c\/p\u003e","products":[{"product_id":"svbony-sv550-80mm-f-6-apo-triplet-refractor-telescope-ota","title":"SVBONY SV550 80mm f\/6 APO Triplet Refractor Telescope OTA","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e80mm Aperture Apochromatic Triplet Refractor\u003c\/li\u003e\n\u003cli\u003e480mm Focal Length\u003c\/li\u003e\n\u003cli\u003eFast f\/6 Focal Ratio\u003c\/li\u003e\n\u003cli\u003eFPL51 ED Glass Element for Color Correction\u003c\/li\u003e\n\u003cli\u003eResolving Power of 1.45 arc seconds\u003c\/li\u003e\n\u003cli\u003eLightweight 2900g Optical Tube\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\u003eAPO Refractor Telescope Triplet SVBONY SV550 80\u003c\/h2\u003e\n\u003cp\u003eThe SVBONY SV550 80mm APO Triplet refractor combines a fast f\/6 focal ratio with a 480mm focal length for wide-field astrophotography. Its three-element apochromatic lens design, featuring FPL51 ED glass, achieves a theoretical resolution of 1.45 arc seconds by virtually eliminating chromatic aberration. The optical tube assembly itself weighs only 2900g, making it an ideal imaging instrument for portable equatorial mounts.\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\u003eApochromatic Triplet Optics: 80mm of FPL51 Color Correction\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the SV550 is an 80mm air-spaced triplet objective. One of the elements is genuine FPL51 extra-low dispersion (ED) glass, which provides excellent color correction by bringing red, green, and blue wavelengths to a single, sharp focus. This apochromatic design prevents the distracting purple fringing around bright stars common in simpler scopes, delivering high-contrast images with a limiting stellar magnitude of 11.6.\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\u003eWide-Field Imaging at f\/6: A 480mm Focal Length Sweet Spot\u003c\/h3\u003e\n\u003cp\u003eThe SV550's 480mm focal length and f\/6 ratio are perfectly suited for capturing large deep-sky objects. This field of view allows you to frame expansive targets like the Andromeda Galaxy (M31) or the entire Veil Nebula complex in a single shot with most modern astronomy cameras. The fast optical system gathers significant light quickly, reducing the required exposure time for faint nebulae.\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\u003ePortable 2900g Build: Sized for Grab-and-Go Mounts\u003c\/h3\u003e\n\u003cp\u003eWith a barrel weight of just 2900g (2.9 kg) and a compact length of 377.8mm, the SV550 is engineered for portability. This low weight places minimal strain on mid-range equatorial mounts, ensuring stable tracking for long-exposure astrophotography without requiring a massive, observatory-class setup. The 103mm outer tube diameter and 150-175mm dovetail plate provide a standard, rigid connection to your mount.\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\u003eSV550 80mm Triplet vs. Standard ED Doublets: The Third Element Advantage\u003c\/h3\u003e\n\u003cp\u003eWhile a standard ED doublet refractor offers good color correction, the SV550's triplet design provides a superior level of performance, particularly for imaging. The third lens element allows for more precise control over the entire visual spectrum, resulting in tighter stars and higher contrast.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChromatic Aberration:\u003c\/strong\u003e The triplet design of the SV550 provides a higher degree of color correction than two-element lenses, which is critical for preventing star bloat and color halos in astrophotography.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImage Contrast:\u003c\/strong\u003e By focusing all colors to a single point, the SV550 produces a darker sky background and reveals more subtle details in planetary features and faint nebulosity.\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 kind of mount is required for the SVBONY SV550 80mm telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a barrel weight of 2900g, the SV550 80mm is well-suited for mid-sized equatorial mounts. For astrophotography, a mount with a payload capacity of at least 20 lbs (9 kg), such as a Sky-Watcher HEQ5 or iOptron CEM26, is recommended to ensure stable, precise tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the FPL51 glass in the SV550 improve my images?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eFPL51\u003c\/strong\u003e is a high-grade, extra-low dispersion (ED) glass that minimizes chromatic aberration. This means it corrects for \"false color,\" preventing purple halos from appearing around bright stars. The result is sharper stars, higher contrast, and more accurate color rendition in your astrophotos.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the SVBONY SV550 80mm f\/6 good for viewing planets like Jupiter and Saturn?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the SV550's apochromatic optics provide excellent, high-contrast views of the planets. While its 480mm focal length is optimized for wide-field imaging, you can use a high-quality Barlow lens to increase the magnification for detailed views of Jupiter's cloud bands, Saturn's rings, and features on Mars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat deep-sky objects can I image with the SV550's 480mm focal length?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 480mm focal length is ideal for large celestial targets. With the SVBONY SV550, you can easily capture:\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe entire Andromeda Galaxy (M31)\u003c\/li\u003e\n\u003cli\u003eThe North America Nebula (NGC 7000)\u003c\/li\u003e\n\u003cli\u003eThe Pleiades star cluster (M45)\u003c\/li\u003e\n\u003cli\u003eThe Heart and Soul Nebulae (IC 1805 and IC 1848)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main benefit of an APO triplet like the SV550 over a standard doublet refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary benefit is superior color correction. A triplet lens, especially one with FPL51 glass like the SV550, brings the red, green, and blue wavelengths of light to a much tighter focus than a two-lens doublet. This eliminates color fringing and produces sharper, higher-contrast images, which is especially critical for astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the 1.45 arc second resolution of the SV550 mean for my images?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eResolution, or Dawes' Limit, is the theoretical ability of a telescope to distinguish between two closely spaced objects, like the individual stars in a tight double star system. A resolution of \u003cstrong\u003e1.45 arc seconds\u003c\/strong\u003e means the 80mm aperture of the SV550 can resolve very fine details, limited only by atmospheric seeing conditions.\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\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSVBONY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Type\u003c\/td\u003e\n\u003ctd\u003eRefractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Design\u003c\/td\u003e\n\u003ctd\u003eApochromatic Triplet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e80mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e480mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eED Glass\u003c\/td\u003e\n\u003ctd\u003eFPL51\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e1.45 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLimiting Stellar Magnitude\u003c\/td\u003e\n\u003ctd\u003e11.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eSMC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube Weight\u003c\/td\u003e\n\u003ctd\u003e2900g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube Length\u003c\/td\u003e\n\u003ctd\u003e377.8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Outer Diameter\u003c\/td\u003e\n\u003ctd\u003e103mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail Plate Length\u003c\/td\u003e\n\u003ctd\u003e150-175mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e3750g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight\u003c\/td\u003e\n\u003ctd\u003e3850g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Size\u003c\/td\u003e\n\u003ctd\u003e440 x 220 x 210mm\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\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/SVBONY_SV550_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\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\/SVBONY_SV550_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\/svbony-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSVBONY 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SVBONY","offers":[{"title":"Default Title","offer_id":52861225140509,"sku":"SV-F9381A","price":783.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/SVBONY-APO-refractor-Telescope-Triplet-SV550-80-1-F9381C_48487187-548c-46bd-a70c-e7332fdaa648.jpg?v=1788884093"},{"product_id":"svbony-sv550-122mm-apo-refractor-telescope-ota","title":"SVBONY SV550 122mm APO Refractor Telescope OTA","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e80mm Aperture\u003c\/li\u003e\n\u003cli\u003ef\/6 Focal Ratio\u003c\/li\u003e\n\u003cli\u003e480mm Focal Length\u003c\/li\u003e\n\u003cli\u003eApochromatic Triplet Lens with FPL-51 ED Glass\u003c\/li\u003e\n\u003cli\u003eSuper Multi-Coated (SMC) Optics\u003c\/li\u003e\n\u003cli\u003e2900g Barrel Weight\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\u003eSVBONY SV550 80mm f\/6 APO Triplet Refractor Telescope\u003c\/h2\u003e\n\u003cp\u003eThe SVBONY SV550 80mm f\/6 APO Triplet Refractor delivers true apochromatic imaging with its 80mm aperture and 480mm focal length. Its air-spaced triplet lens, featuring one FPL-51 ED glass element, achieves a theoretical resolution of 1.45 arc seconds and reaches a limiting stellar magnitude of 11.6, producing high-contrast images free of false color.\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\u003e80mm f\/6 Triplet APO: High-Contrast Views with FPL-51 Glass\u003c\/h3\u003e\n\u003cp\u003eAt the core of the SV550 is an 80mm air-spaced apochromatic triplet objective. This design utilizes an FPL-51 Extra-low Dispersion (ED) glass element to precisely focus red, green, and blue wavelengths to the same point, virtually eliminating the chromatic aberration or \"purple fringing\" seen in simpler achromats and some ED doublets. The Super Multi-Coated (SMC) optics ensure maximum light transmission for bright, high-contrast views of both planetary details and 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\u003eA 480mm Focal Length for Wide-Field Astrophotography\u003c\/h3\u003e\n\u003cp\u003eWith a native focal length of 480mm and a fast f\/6 focal ratio, the SV550 80 is optimized for wide-field astrophotography. This combination is ideal for capturing large celestial targets like the Andromeda Galaxy (M31), the Pleiades (M45), or sweeping regions of the Milky Way. For imagers seeking pinpoint stars across the entire frame, the addition of a dedicated field flattener is necessary to correct for natural field curvature.\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\u003e2900g OTA: A Portable Platform for Modern Mounts\u003c\/h3\u003e\n\u003cp\u003eThe optical tube assembly weighs in at a manageable 2900g (barrel weight), making the SV550 80 an excellent choice for portable imaging setups. This low weight reduces the demands on your equatorial mount, allowing for stable tracking on a wide variety of platforms, from compact star trackers to mid-size GoTo mounts. The telescope includes a 150-175mm dovetail plate for secure and straightforward mounting.\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\u003eSV550 80 APO vs. Standard 80mm ED Doublets: The Triplet Advantage\u003c\/h3\u003e\n\u003cp\u003eWhile an 80mm ED doublet refractor offers good color correction, the SV550's triplet design provides a superior level of performance, particularly for astrophotography.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eED Doublet Advantage:\u003c\/strong\u003e Doublets are typically lighter, cool down faster, and are more affordable, making them excellent visual instruments and entry points into imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSV550 Triplet Advantage:\u003c\/strong\u003e The third lens element in the SV550 allows for a higher degree of color correction, significantly reducing residual spherical and chromatic aberration. This results in tighter star points and a complete absence of color fringing on bright objects like Sirius or Vega, a critical factor for producing clean, high-fidelity astrophotos.\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 kind of mount do I need for the SVBONY SV550 80 telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a barrel weight of \u003cstrong\u003e2900g\u003c\/strong\u003e, the SV550 80 is relatively lightweight. For visual use, a solid alt-azimuth mount is sufficient. For long-exposure astrophotography, a German equatorial mount with a payload capacity of at least 15-20 lbs (like a Celestron AVX or Sky-Watcher HEQ5) is recommended to handle the telescope plus a camera, guidescope, and other accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the SV550 80's FPL-51 glass perform on bright stars like Vega?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe apochromatic triplet design incorporating \u003cstrong\u003eFPL-51 ED glass\u003c\/strong\u003e is specifically engineered to minimize chromatic aberration. When focused on a bright, blue-white star like Vega, you will see a clean, sharp point of light without the distracting purple halo common in achromatic or less-corrected doublet refractors. This high level of color fidelity is a key benefit for both visual observers and astrophotographers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a field flattener for imaging with the SVBONY SV550 80?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Like all refractors, the SV550 80 has natural field curvature, which can cause stars at the edge of an image to appear slightly elongated. To achieve pinpoint stars across the entire field of view, especially with cameras using APS-C or larger sensors, a dedicated field flattener is essential. The SVBONY SV209 0.8x reducer\/flattener is designed for this purpose.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the SVBONY SV550 80 suitable for planetary viewing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile its \u003cstrong\u003e480mm focal length\u003c\/strong\u003e is optimized for wide-field deep-sky objects, the SV550 80's high-quality apochromatic optics make it a capable planetary instrument. By using a high-quality Barlow lens to increase the magnification, you can achieve sharp, high-contrast views of Jupiter's cloud bands, Saturn's rings, and details on Mars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the SVBONY SV550 80 for visual astronomy on targets like the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The \u003cstrong\u003ef\/6 focal ratio\u003c\/strong\u003e and 80mm aperture provide a bright, wide field of view that is perfect for large deep-sky objects. With a low-power, wide-field eyepiece, the Orion Nebula (M42), the Andromeda Galaxy (M31), and large open clusters like the Pleiades (M45) will be beautifully framed against a dark sky background.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the 1.45 arc second resolution of the SV550 80 mean in practice?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e1.45 arc second\u003c\/strong\u003e resolution (Dawes' Limit) represents the telescope's theoretical ability to distinguish between two closely spaced stars under perfect atmospheric conditions. This resolving power allows you to split tight double stars like Albireo (Beta Cygni) with distinct color separation and to discern fine details in lunar craters and planetary features.\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\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSVBONY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Type\u003c\/td\u003e\n\u003ctd\u003eApochromatic Refractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e80mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e480mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Design\u003c\/td\u003e\n\u003ctd\u003eAir-Spaced Triplet Apochromatic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eED Glass\u003c\/td\u003e\n\u003ctd\u003eFPL-51\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eSMC (Super Multi-Coated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e1.45 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLimiting Stellar Magnitude\u003c\/td\u003e\n\u003ctd\u003e11.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Outer Diameter\u003c\/td\u003e\n\u003ctd\u003e103mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Length\u003c\/td\u003e\n\u003ctd\u003e377.8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Weight\u003c\/td\u003e\n\u003ctd\u003e2900g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e3750g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight\u003c\/td\u003e\n\u003ctd\u003e3850g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail Plate Length\u003c\/td\u003e\n\u003ctd\u003e150-175mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Size\u003c\/td\u003e\n\u003ctd\u003e440 x 220 x 210mm\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\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/SVBONY_SV550_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\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\/SVBONY_SV550_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\/svbony-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSVBONY 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SVBONY","offers":[{"title":"Default Title","offer_id":52861225238813,"sku":"SV-F9381C","price":1903.0,"currency_code":"CAD","in_stock":true}]},{"product_id":"svbony-sv209-1-0x-field-flattener-for-sv550-80f6","title":"SVBONY SV209 1.0X Field Flattener for SV550 80F6","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e1.0x focal correction factor\u003c\/li\u003e\n\u003cli\u003eDesigned for the Svbony SV550 80F6 telescope\u003c\/li\u003e\n\u003cli\u003e45mm fully illuminated image circle\u003c\/li\u003e\n\u003cli\u003eM63x1 telescope-side connection\u003c\/li\u003e\n\u003cli\u003eProvides 55mm, 91.5mm, and 103mm back focus distances\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\u003eSvbony SV209 1.0x Flattener for SV550 80F6\u003c\/h2\u003e\n\u003cp\u003eThe Svbony SV209 1.0x Flattener is engineered specifically for the SV550 80F6 refractor, using a 2-element optical design to produce a 45mm fully illuminated field for full-frame sensors. It connects directly to the telescope's drawtube via an M63x1 male thread and provides multiple back focus options, including the standard 55mm distance via an M48x0.75 camera connection. This flattener maintains your telescope's native focal length with its 1.0x factor, ensuring pinpoint stars across the entire image frame without altering the field of view.\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\u003e1.0x Flat-Field Correction for the SV550 80F6\u003c\/h3\u003e\n\u003cp\u003eRefractor telescopes naturally exhibit field curvature, causing stars at the edge of an image to appear elongated or out of focus. The SV209 is optically matched to the SV550 80F6 to counteract this distortion. Its 2-element, fully multi-coated (FMC) lens system corrects for off-axis aberrations without changing the telescope's focal length, preserving the original 1.0x magnification and f-ratio.\u003c\/p\u003e\n\u003cp\u003eThis dedicated design ensures that the correction is optimized for the SV550's optical system, delivering sharp, round stars from the center to the corners of your sensor. This is a critical upgrade for astrophotography, transforming the SV550 into a flat-field imaging instrument capable of capturing clean, wide-field vistas of nebulae and star clusters.\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\u003eM63x1 Connection and Multiple Back Focus Options\u003c\/h3\u003e\n\u003cp\u003eThe SV209 establishes a secure, threaded connection by attaching directly to the SV550's M63x1 drawtube threads, eliminating any potential for flexure that can occur with 2-inch compression fittings. The camera side offers multiple documented back focus distances—103mm from the female M63x1 thread, and either 55mm or 91.5mm from the male M48x0.75 thread—to accommodate various imaging train components like off-axis guiders and filter wheels.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 55mm Back Focus:\u003c\/strong\u003e The M48x0.75 thread is configured to achieve the 55mm back focus standard used by most DSLRs, mirrorless cameras with T-rings, and dedicated astronomy cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Filter Threads:\u003c\/strong\u003e The design incorporates threads for standard 2-inch (M48) astronomy filters, allowing you to easily add light pollution or narrowband filters into your optical path without needing a separate filter drawer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Installation:\u003c\/strong\u003e The flattener threads on after removing the SV550's stock 2-inch eyepiece adapter, creating a rigid imaging train from the focuser to the camera sensor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e45mm Image Circle for Full-Frame Sensors\u003c\/h3\u003e\n\u003cp\u003eA key capability of the SV209 is its ability to produce a fully illuminated and corrected image circle of 45mm. This generous field is large enough to cover modern full-frame (36x24mm) camera sensors without vignetting, a significant advantage for capturing large targets like the Andromeda Galaxy (M31) or the North America Nebula (NGC 7000).\u003c\/p\u003e\n\u003cp\u003eWhile many flatteners are designed only for smaller APS-C sensors, the SV209's 45mm corrected field unlocks the full potential of the SV550 80F6 telescope for use with larger sensors. This ensures even illumination and sharp stars across the entire frame, maximizing the data captured in every exposure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main purpose of the Svbony SV209 Flattener?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Svbony SV209 is an optical corrector designed specifically for the \u003cstrong\u003eSvbony SV550 80F6\u003c\/strong\u003e telescope. Its function is to eliminate the natural field curvature of the telescope's optics, ensuring that stars are sharp and pinpoint across the entire photograph, from the center to the very corners. It does this without changing the telescope's focal length (1.0x factor).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the SV209 compatible with telescopes other than the SV550 80F6?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the SV209 is designed as a dedicated flattener for the \u003cstrong\u003eSvbony SV550 80F6\u003c\/strong\u003e. Field flatteners are calculated for a specific optical design, and using this on another telescope, even one with similar specs, will likely result in poor correction. For optimal results, it should only be used with the SV550.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat imaging setups are the 55mm, 91.5mm, and 103mm back focus options for on the SV209?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe different back focus distances allow for flexibility in your imaging train:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e55mm (from M48 thread):\u003c\/strong\u003e This is the industry standard for DSLRs\/mirrorless cameras with a T-ring, as well as many dedicated astronomy cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e91.5mm \/ 103mm:\u003c\/strong\u003e These longer distances provide the necessary space to insert additional accessories between the flattener and the camera, such as an off-axis guider (OAG), a filter wheel, or other adapters, while still achieving the correct total spacing for a flat field.\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 2-inch filters with the Svbony SV209?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The SV209 includes standard M48x0.75 threads (the same as 2-inch filters) on the camera-side adapter, allowing you to directly attach 2-inch filters for light pollution reduction or narrowband imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the SV209 Flattener illuminate my full-frame camera when imaging the Andromeda Galaxy (M31) with the SV550?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. The SV209 produces a \u003cstrong\u003e45mm fully illuminated and corrected image circle\u003c\/strong\u003e. This is more than large enough to cover a standard full-frame sensor (which has a ~43mm diagonal), ensuring no vignetting and sharp stars across the entire frame when capturing 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\"\u003eHow do I install the Svbony SV209 on my SV550 80F6 telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInstallation requires a direct threaded connection. First, you must unscrew the standard 2-inch eyepiece holder from the focuser drawtube of your SV550. This will expose the male M63x1 threads on the drawtube. The SV209 flattener then threads directly onto this M63x1 connection, providing a secure, flex-free fit.\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\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSVBONY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eField Flattener for SV550 80F6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrection Factor\u003c\/td\u003e\n\u003ctd\u003e1.0x (no focal length change)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003e2 elements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eFully Multi-Coated (FMC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIlluminated Field\u003c\/td\u003e\n\u003ctd\u003e45mm (Supports full-frame sensors)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003eM63x1 male thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection 1 (Thread)\u003c\/td\u003e\n\u003ctd\u003eM63x1 female thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection 1 (Back Focus)\u003c\/td\u003e\n\u003ctd\u003e103mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection 2 (Thread)\u003c\/td\u003e\n\u003ctd\u003eM48x0.75 male thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection 2 (Back Focus)\u003c\/td\u003e\n\u003ctd\u003e55mm or 91.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdditional Threads\u003c\/td\u003e\n\u003ctd\u003eM63x1 female thread for photo adaptions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Diameter\u003c\/td\u003e\n\u003ctd\u003e67mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e87.5mm (without male thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/svbony-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSVBONY Warranty Policy\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SVBONY","offers":[{"title":"Default Title","offer_id":52861262528797,"sku":"SV-W9161A","price":168.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/SVBONY-SV209-1-0x-Flattener-for-SV550-80F6-M63x1-Connection-Black-1_aeaa0c9a-d3bc-4129-bcdc-146c73679a89.jpg?v=1788883554"}],"url":"https:\/\/davidastro.com\/fr-us\/collections\/svbony-sv550-apo-refractor-telescopes.oembed","provider":"David Astro","version":"1.0","type":"link"}