{"title":"SVBONY Astrographs","description":"\u003cp\u003eSVBONY astrographs include the SV545 45mm and SV555 54mm f\/4.5 Petzval APOs and the SV535 105mm f\/2.8 APO astrograph lens, along with imaging kits that pair them with cameras, filters and power controllers. Part of \u003ca href=\"\/collections\/astrographs\"\u003eAstrograph Telescopes\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"sv555-astrophotography-telescope-apo-54mm-f-4-5-astrograph","title":"SV555 Astrophotography Telescope APO 54mm f\/4.5 Astrograph","description":"\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eNew Upgrade:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSurface Finish Upgrade\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWeight Reduction 90g+\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eLens Hood from 97mm to 93mm\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFocus Travel 2.67mm to 3.22mm\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eMore clear image; APO astro camera lens consists of a 3-group 5-piece petzval objective lens structure; which includes a set of triplet lens; bringing you a clearer image;\u003c\/li\u003e\n\u003cli\u003e44mm full-frame; This telephoto lens can avoid aperture blocking; whether mirrorless camera; SLR camera; or deep-sky camera; you can photograph clear image without trouble;\u003c\/li\u003e\n\u003cli\u003eMounting kit available; SV555 astrograph is equipped with a bracket and belt for EAF; you can get an accurate angle to photograph quickly and conveniently;\u003c\/li\u003e\n\u003cli\u003eSingle-speed focus; the telescope camera lens supports fine adjustment; enabling you to adjust the photography angle accurately for fast shooting;\u003c\/li\u003e\n\u003cli\u003eVarious aperture range; the astronomical photography lens can adjust the aperture from F22 to F4.5; meeting a variety of use needs; the included graded adjustment ring and scale also make it convenient for photography by preventing accidental touching;\u003c\/li\u003e\n\u003cli\u003eCompatibility; SV555 telescope camera lens features an M48x0.75 filter thread to install the 2\" filter; additionally; the V-style \u0026amp; Arca-Swiss quick-release system is compatible; flexible and easy to use; enhancing the efficiency;\u003c\/li\u003e\n\u003cli\u003eConvenient to use; the APO astro camera lens is featured with a handle; bracker; and dovetail plate; making it more convenient to use the lens when shooting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGet SV555 Full Review by\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.youtube.com\/watch?v=K0xrhftRYvU\" target=\"_blank\" rel=\"noopener\"\u003e@Cuiv, The Lazy Geek\u003cspan\u003e \u003c\/span\u003e\u003c\/a\u003e \u003c\/strong\u003e\u003cstrong\u003e   \u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e\n\u003cspan\u003eSV555 New Upgrade, New Experience\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003e\u003cimg title=\"svbony sv555 artrograph telescope.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20250326\/6387860494034395581518285.jpg\" alt=\"svbony sv555 artrograph telescope.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWe' ve updated the \u003cstrong\u003esandblasting process from a 320-grit to a 280-grit finish\u003c\/strong\u003e.This gives the new version a more refined, matte texture that not only looks better but also resists fingerprints. You'Il see a clear dlifference in the side-by-side comparison we' re showing here. Next, we've managed to\u003cstrong\u003e reduce the weight of the tube by over 90 grams\u003c\/strong\u003e. This makes the new version \u003cstrong\u003elighter \u003c\/strong\u003eand more \u003cstrong\u003eportable\u003c\/strong\u003e. The third improvement is in the reduced lens hood. The \u003cstrong\u003eouter diameter of the lens hood \u003c\/strong\u003eis\u003cstrong\u003e reduced from 97mm to 93mm \u003c\/strong\u003eand\u003cstrong\u003e the wall thickness from the 3mm to 2.5mm\u003c\/strong\u003e. This makes the hood more compact and lightweight while maintaining its functionality. Finally, we’ve increased the \u003cstrong\u003efocus travel from 2.67mm to 3.22mm\u003c\/strong\u003e. This provides a smoother and more precise focusing experience, especially for astrophotography. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg title=\"6386510247663317613099217.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241114\/6386717316224383064745589.jpg\" alt=\"6386510247663317613099217.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSvbony SV555 professional astronomical photography telescope APO is designed for deep-sky photography. Petzval objective lens structure includes a triplet lens and 2-ED glasses offering a clear image without aperture blocking. 44mm full frame has a wide field of view and provides a clearer image. EAF kit and fine adjustment make it convenient to shoot. F22 to F4.5 variable aperture meets different use needs. For photography users, SV555 will be a better choice to use.  It is going to be an ace travel lens for your journey\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg title=\"12.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241021\/6386510249477841506783642.jpg\" alt=\"12.jpg\"\u003e\u003c\/p\u003e\n\u003ch2\u003e \u003c\/h2\u003e\n\u003ch2\u003e\u003cspan\u003eTest Report Interferogram\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241018\/6386486834241502236512928.webp\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg title=\"14.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241021\/6386510251659207792553982.jpg\" alt=\"14.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSV555 astrophotography telescope camera lens can adjust the aperture from F22 to F4.5; professional astronomical photography lens includes a graded adjustment ring and scale; keeping the parameters the same without changing due to accidental touching; increasing the accuracy of shooting, meeting a variety of use needs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg title=\"16.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241021\/6386510253006331907116268.jpg\" alt=\"16.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe SV555 ED APO astro camera lens uses integrated structure and light weight; increasing the ease of use when shooting.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg title=\"18.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241021\/6386510266953046968828259.jpg\" alt=\"18.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSV555 APO astro camera lens is featured with a handle; bracker; and dovetail plate; making it more convenient to use the lens when shooting. \u003c\/span\u003e\u003cspan\u003eWith a lockable 360° rotator and rotatable lens tube, the APO telephoto lens is convenient for adjusting and saving the angle. Whether daily shooting or astrophotography, you can find a suitable angle for a better shooting effect.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCompatible with cameras; the M72 front filter thread can be connected to the camera filter for daily photography; the design increases the flexibility and ease of the APO telephoto lens. Dual rotate design; lockable 360° rotator and lens tube help you adjust the angle accurately; astrophotography telescope offers a better photography effect to you.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg title=\"37.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241021\/6386510272454340885031433.jpg\" alt=\"37.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg title=\"21.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241007\/6386390716980020453879792.jpg\" alt=\"21.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIncreased image quality; SV555 APO astro camera lens consists of a 3-group 5-piece petzval objective lens structure; which includes a set of triplet lens; bringing you a clearer image. Petzval objective lens structure with triplet lens offers a flatter field of view; and improves assembly efficiency and accuracy; you can get an enhanced image quality even on the edge of star point.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg title=\"23.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241007\/6386390717009110653836612.jpg\" alt=\"23.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg title=\"25.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241007\/6386390717038213782832883.jpg\" alt=\"25.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg title=\"27.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241007\/6386390717067157214060536.jpg\" alt=\"27.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg title=\"31.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241007\/6386390717096730747469774.jpg\" alt=\"31.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg title=\"33.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20241021\/6386510291033527916158863.jpg\" alt=\"33.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSV555 astro APO telescope camera lens features an M48x0.75 filter thread to install the 2\" filter; additionally; the V-style \u0026amp; Arca-Swiss quick-release system is compatible; flexible and easy to use; enhancing the efficiency.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"SvBony","offers":[{"title":"Default Title","offer_id":44014095466607,"sku":"F9395A","price":726.74,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/sv555-2__15353.jpg?v=1766570903"},{"product_id":"svbony-sv545-petzval-astrograph","title":"SVBONY SV545 45mm f\/4.5 Petzval APO Astrograph Lens","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9317B-Description-10_20251219101629_5486.webp?v=1791669959\" alt=\"SVBONY SV545 45mm f\/4.5 Petzval astrograph lens\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe SVBONY SV545 is a 45 mm, 203 mm focal length Petzval apochromatic astrograph working at f\/4.5. It uses a five-element, three-group objective with fully multi-coated (FMC) optics and a built-in flat field, so stars stay round toward the edge of the frame without a separate flattener. A one-piece helical focuser, a lockable 360° rotator and an M48x0.75 male thread at the back make it a compact, self-contained wide-field imaging lens.\u003c\/p\u003e\n\u003cp\u003eSVBONY ships it with an EAF mount kit, a carry handle with an integrated Vixen-style finder saddle, a dovetail plate, a camera angle adjuster, a 2″ filter holder already assembled to the lens, front and rear covers and a soft padded case.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9317B-Description-12_20251219101635_4375.webp?v=1791669959\" alt=\"SVBONY SV545 Petzval astrograph feature overview\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if you:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImage large deep-sky fields:\u003c\/strong\u003e 203 mm of focal length frames big emission nebulae, dark-nebula regions and star fields such as Cygnus, Orion and the Milky Way core.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWant a fast, portable rig:\u003c\/strong\u003e f\/4.5 keeps sub-exposures short, and the short tube rides on compact star trackers and small equatorial mounts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrefer a simple imaging train:\u003c\/strong\u003e the flat field is built in, so the camera threads straight to the M48 back without a corrector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlan to automate focus:\u003c\/strong\u003e the helical focuser is prepared for an electronic auto focuser, and the EAF mount kit is included.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt works well as a first dedicated astrograph and as a wide-field companion to a longer imaging telescope.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePetzval APO objective:\u003c\/strong\u003e five elements in three groups, fully multi-coated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e45 mm aperture, 203 mm focal length, f\/4.5:\u003c\/strong\u003e a short, fast focal length for wide-field framing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in flat field:\u003c\/strong\u003e no external flattener is needed for edge-to-edge star shapes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelical focuser:\u003c\/strong\u003e one-piece integrated focusing, prepared for an EAF with the included mount kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLockable 360° rotator:\u003c\/strong\u003e frame the target without loosening the camera.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM48x0.75 male back thread:\u003c\/strong\u003e standard connection for astronomy cameras, filter wheels and DSLR T-rings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2″ filter holder:\u003c\/strong\u003e supplied already assembled to the lens.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-metal body:\u003c\/strong\u003e SVBONY describes sealed construction with protective coatings for humid or dusty conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9317B-Description-16_20251219101713_3423.webp?v=1791669959\" alt=\"SVBONY SV545 built-in flat field\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9317B-Description-18_20251219101718_2772.webp?v=1791669960\" alt=\"SVBONY SV545 helical focuser and EAF readiness\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9317B-Description-20_20251219101723_5148.webp?v=1791669959\" alt=\"SVBONY SV545 lockable 360 degree rotator\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eA Petzval astrograph splits its optics into a front objective group and a rear corrector group spaced inside the tube. Because the field-flattening group is part of the design, the focal plane arrives flat at the camera without an add-on corrector, and there is no backfocus spacer stack to tune for the flattener. SVBONY's 3-group, 5-element layout keeps the element count moderate for optical consistency and a compact body, while the fully multi-coated surfaces control reflections around bright stars.\u003c\/p\u003e\n\u003cp\u003eAt f\/4.5 and 203 mm the SV545 gathers signal quickly and covers a wide patch of sky, which suits broadband colour imaging under dark skies as well as narrowband or dual-band work from the suburbs.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9317B-Description-14_20251219101641_3151.webp?v=1791669959\" alt=\"SVBONY SV545 3-group 5-element Petzval optical design\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide-field nebula imaging:\u003c\/strong\u003e North America and Pelican, Cygnus Loop, Rosette, Orion's Sword and Heart and Soul regions fit comfortably.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMilky Way star fields:\u003c\/strong\u003e rich star clouds and dark-nebula regions at a short focal length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNarrowband and dual-band imaging:\u003c\/strong\u003e through the included 2″ filter holder.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTravel imaging:\u003c\/strong\u003e a compact lens that packs into its padded case with the accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9317B-Description-22_20251219101729_5597.webp?v=1791669960\" alt=\"SVBONY SV545 camera and filter compatibility\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamera connection:\u003c\/strong\u003e M48x0.75 male thread at the back. SVBONY states the standard threads and back focus suit DSLRs, astronomy cameras and filter wheels without extra adapters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilters:\u003c\/strong\u003e 2″ filters mount in the supplied filter holder.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocusing:\u003c\/strong\u003e manual helical focus, with an EAF mount kit included for an electronic focuser.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e dovetail plate supplied; the handle carries a Vixen-style finder saddle for a guide scope or finder.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFraming:\u003c\/strong\u003e lockable 360° rotator plus a camera angle adjuster in the box.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you want to check a particular camera, filter wheel or guider against the SV545's back end, send us your setup and we will work through the spacing with you.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9317B-Description-23_20251219101734_2821.webp?v=1791669959\" alt=\"SVBONY SV545 imaging train connection\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9317B-Description-24_20251219101755_4933.webp?v=1791669959\" alt=\"SVBONY SV545 handle and finder saddle\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9317B-Description-26_20251219101800_4141.webp?v=1791669959\" alt=\"SVBONY SV545 all-metal construction\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9317B-Description-28_20251219101805_2095.webp?v=1791669960\" alt=\"SVBONY SV545 specifications and dimensions\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWhat's in the Box\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x SV545 astro APO camera lens\u003c\/li\u003e\n\u003cli\u003e1 x EAF mount kit\u003c\/li\u003e\n\u003cli\u003e1 x handle with integrated Vixen-style finder saddle\u003c\/li\u003e\n\u003cli\u003e1 x dovetail plate\u003c\/li\u003e\n\u003cli\u003e1 x camera angle adjuster\u003c\/li\u003e\n\u003cli\u003e1 x 2″ filter holder (assembled to the lens)\u003c\/li\u003e\n\u003cli\u003e1 x plastic lens cover\u003c\/li\u003e\n\u003cli\u003e1 x M48 metal lens cover\u003c\/li\u003e\n\u003cli\u003e1 x soft padded case\u003c\/li\u003e\n\u003cli\u003eWrench and screws\u003c\/li\u003e\n\u003cli\u003e1 x instruction manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9317B-Description-30_20251219101810_8152.webp?v=1791669960\" alt=\"SVBONY SV545 package contents\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging lens:\u003c\/strong\u003e the SV545 is built as an astrograph for cameras. It has no diagonal or eyepiece in the box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight figure:\u003c\/strong\u003e SVBONY publishes an estimated weight of 2750 g and does not state whether it is the bare lens or the packed kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount and camera sold separately:\u003c\/strong\u003e the lens needs a tracking mount and a camera; the SVBONY add-ons on this page cover filters and imaging accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStyle option:\u003c\/strong\u003e SVBONY also offers an SV545 Photography Set; this listing is the SV545 OTA style.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The flat field is built in, so the camera threads onto the M48 back, the rotator sets framing, and the helical focuser brings stars to focus. There is no external flattener spacing to work out.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it need a field flattener?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. SVBONY designs the SV545 with a built-in flat field for edge-to-edge stars.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I add an electronic focuser?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The focuser is prepared for an EAF, and the EAF mount kit is in the box.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat filters does it take?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2″ filters, in the 2″ filter holder supplied assembled to the lens.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it work with a DSLR?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, through an M48 T-ring for your camera body. Astronomy cameras connect to the same M48x0.75 thread.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWide-field deep-sky imaging of large nebulae and Milky Way regions at 203 mm and f\/4.5.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 45 mm, 203 mm f\/4.5 Petzval astrograph with a built-in flat field, helical EAF-ready focuser, lockable rotator, 2″ filter holder and M48 back, supplied with handle, dovetail and padded case. Add a camera and a tracking mount and it is ready for wide-field imaging.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"SV545 OTA","offer_id":67722231316591,"sku":"W9317B","price":569.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/SV545-1_20260211084332_9921.webp?v=1791670140"},{"product_id":"svbony-sv535-105mm-f2-8-apo-astrograph-lens","title":"SVBONY SV535 105mm f\/2.8 APO Astrograph Lens","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9329A-Description-1_20251219100319_5163.webp?v=1791671058\" alt=\"SVBONY SV535 105mm f\/2.8 APO astrograph lens key visual\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe SVBONY SV535 is a 105 mm f\/2.8 apochromatic astrograph lens: a compact, seven-element optic in five groups with FMC coatings, a helical focuser and a dovetail mounting plate, built for wide-field astrophotography with full-frame support. At f\/2.8 it collects light quickly, so large nebulae, dust lanes and Milky Way star fields build up in short sub-exposures.\u003c\/p\u003e\n\u003cp\u003eThe rear connection is an M42x0.75 male thread, the front accepts 2″ filters, and SVBONY supplies both Vixen-style and Arca-Swiss plates. SVBONY describes the lens as weighing approximately 482 g.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9329A-Description-2_20251219100327_3755.webp?v=1791671058\" alt=\"SVBONY SV535 105mm f\/2.8 APO lens overview panel\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9329A-Description-10_20251219100332_4948.webp?v=1791671058\" alt=\"SVBONY SV535 APO astrograph lens feature panel\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if you:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImage wide fields:\u003c\/strong\u003e 105 mm frames whole constellations' worth of nebulosity, such as the Cygnus region, the Veil and the North America Nebula.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTravel or image from dark sites:\u003c\/strong\u003e a lens of about 482 g rides on star trackers and small mounts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShoot nightscapes and Milky Way panoramas:\u003c\/strong\u003e the fast f\/2.8 aperture keeps exposures short.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse a full-frame or APS-C camera:\u003c\/strong\u003e SVBONY specifies full-frame support.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e105 mm f\/2.8 APO optics:\u003c\/strong\u003e 7 elements in 5 groups with FMC coatings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelical focuser:\u003c\/strong\u003e smooth, precise focus without image shift.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual dovetail plates:\u003c\/strong\u003e Vixen-style and Arca-Swiss plates included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM42x0.75 male rear thread:\u003c\/strong\u003e with a 24 mm back focal length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2″ filter thread:\u003c\/strong\u003e for light-pollution and narrowband filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoft case:\u003c\/strong\u003e included for transport.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9329A-Description-11_20251219100338_2873.webp?v=1791671058\" alt=\"SVBONY SV535 APO astrograph lens design panel\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/15-1600x837_20251219162320_3689_20260714113746_2882.webp?v=1791671058\" alt=\"SVBONY SV535 APO astrograph lens panel\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9329A-Description-13_20251219100347_8401.webp?v=1791671058\" alt=\"SVBONY SV535 APO astrograph lens detail panel\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe SV535 uses seven elements in five groups, an apochromatic design that brings red, green and blue light to a common focus so bright stars stay free of colour halos at f\/2.8. Unlike a standard camera lens, it is focused manually with a helical focuser and mounted by a dovetail, so it behaves like a small astrograph in the imaging train: a fixed, repeatable focus point, filters ahead of the optics, and a firm mount under the lens rather than the camera body.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9329A-Description-14_20251219100352_7716.webp?v=1791671058\" alt=\"SVBONY SV535 APO astrograph lens optics panel\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9329A-Description-16_20251219100402_6797.webp?v=1791671058\" alt=\"SVBONY SV535 APO astrograph lens focuser panel\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9329A-Description-17_20251219100407_6678.webp?v=1791671058\" alt=\"SVBONY SV535 APO astrograph lens mounting panel\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide-field deep-sky imaging:\u003c\/strong\u003e large faint nebulae, dust structures and galaxy groups, as SVBONY describes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMilky Way and nightscape photography:\u003c\/strong\u003e on a star tracker with a mirrorless or DSLR camera.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNarrowband imaging:\u003c\/strong\u003e with 2″ filters on the front thread or a filter drawer in the train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMosaics:\u003c\/strong\u003e wide individual panels cover large regions quickly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9329A-Description-18_20251219100412_4314.webp?v=1791671058\" alt=\"SVBONY SV535 APO astrograph lens connection panel\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9329A-Description-19_20251219100416_2024.webp?v=1791671059\" alt=\"SVBONY SV535 APO astrograph lens portability panel\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9329A-Description-20_20251219100420_7279.webp?v=1791671058\" alt=\"SVBONY SV535 APO astrograph lens wide-field applications panel\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focal length:\u003c\/strong\u003e 24 mm from the M42 thread. SVBONY notes this is too short for common T-mount camera adapters, which is why it offers dedicated short T\u0026amp;E-mount (Sony E), T\u0026amp;E\u0026amp;Z (Nikon Z) and T\u0026amp;E\u0026amp;RF (Canon RF) options.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis listing:\u003c\/strong\u003e the T\u0026amp;E-mount configuration. The Z, RF and SV535-to-SV226 M42 configurations are also offered by SVBONY; contact us for those.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAstronomy cameras:\u003c\/strong\u003e M42 connection; SVBONY offers an SV226 M42 filter-drawer configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Vixen-style and Arca-Swiss plates fit most star trackers and mount saddles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSVBONY publishes connection diagrams for Sony, Nikon and Canon mirrorless bodies; if your camera is different, send us the model and we will work out the connection with you.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Connection-Diagram-1_20251220111247_6433.webp?v=1791671058\" alt=\"SVBONY SV535 with Sony 6000 connection diagram\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Connection-Diagram-2_20251220111247_8791.webp?v=1791671058\" alt=\"SVBONY SV535 with Nikon Z30 connection diagram\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Connection-Diagram-3_20251220111248_1398.webp?v=1791671058\" alt=\"SVBONY SV535 with Canon EOS RF connection diagram\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWhat's in the Box\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSV535 105 mm f\/2.8 APO lens\u003c\/li\u003e\n\u003cli\u003eVixen-style dovetail plate\u003c\/li\u003e\n\u003cli\u003eArca-Swiss plate\u003c\/li\u003e\n\u003cli\u003eM48 and M42 metal lens caps\u003c\/li\u003e\n\u003cli\u003eSoft case\u003c\/li\u003e\n\u003cli\u003eWrench and screws\u003c\/li\u003e\n\u003cli\u003eInstruction manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShort back focus:\u003c\/strong\u003e the 24 mm back focal length needs SVBONY's matched short adapters rather than a standard T-ring; the configuration option sets this for your camera.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight figures:\u003c\/strong\u003e SVBONY's feature text gives about 482 g, while its specification table lists an estimated 1500 g.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging only:\u003c\/strong\u003e the SV535 is an astrograph lens for cameras; it is not set up for eyepiece viewing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. Attach the matching mount adapter to your camera, thread it to the lens, mount the lens by its plate and focus with the helical focuser on a bright star.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it cover a full-frame sensor?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSVBONY specifies full-frame support.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use filters?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The front accepts 2″ filters, and an M42 filter-drawer configuration is available.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy can't I use an ordinary T-ring?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 24 mm back focal length is shorter than a standard T-ring and camera flange combined, so SVBONY's short mount adapters are used instead.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 105 mm f\/2.8 seven-element APO lens with helical focus, dual dovetail plates and a 2″ filter thread, built for fast wide-field imaging on a tracker or small mount. Pair it with the matched short adapter for your camera and it is ready to image.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"T\u0026E-mount","offer_id":67722441883759,"sku":"W9317A","price":341.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/SV535_20260303164905_6305.webp?v=1791671155"}],"url":"https:\/\/ontariotelescope.com\/collections\/astrographs-svbony.oembed","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}