{"title":"SVBONY Refractors","description":"\u003cp\u003eSVBONY refractors cover the SV501P portable 60mm and 70mm scopes, SV48P achromats in 90 and 102mm, SV503 ED refractors in 70, 80 and 102mm, and SV550 triplet APOs in 80 and 122mm. Many models are also offered as visual or astrophotography sets with reducers, guide scopes and cameras. Part of \u003ca href=\"\/collections\/refractors\"\u003eRefractor Telescopes\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"svbony-sv503-70ed-flat-field-refractor-ota","title":"SVBONY SV503 70ED f\/6.78 Flat-Field ED Refractor Telescope OTA","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6388370617148740884701493.webp?v=1791669786\" alt=\"SVBONY SV503 70ED flat-field refractor with built-in two-element field flattener\" 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 SV503 70ED is a 70 mm f\/6.78 extra-low-dispersion doublet refractor with a 474 mm focal length and a two-element field corrector built into the tube. Because the flattener is already in the optical path, the telescope delivers a corrected, flat field 32 mm across without a separate corrector or spacer calculation, which makes it a compact, ready-to-image wide-field astrograph that also works well visually.\u003c\/p\u003e\n\u003cp\u003eThe objective combines FPL51 ED glass with a lanthanum special-glass element. The 2.5″ rack-and-pinion focuser has coarse and fine knobs, a 2″ reduction adapter and an M54x0.75 female thread, and the dew shield retracts for storage. SVBONY lists the tube at 2685 g (5.9 lb) including accessories.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6388152055534958084994129.jpg?v=1791669786\" alt=\"SVBONY SV503 70ED 70mm f\/6.78 aperture and focal ratio 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\u003eWant a small refractor that images without extra correctors:\u003c\/strong\u003e the built-in flattener removes the spacing step that external flatteners need.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImage wide fields:\u003c\/strong\u003e 474 mm suits large nebulae, star fields and the bigger galaxies such as M31.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTravel or set up quickly:\u003c\/strong\u003e a 365 mm minimum tube length and under 3 kg fit small mounts and star trackers with suitable payload.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso observe:\u003c\/strong\u003e with a diagonal and eyepiece it gives sharp, low-colour wide-field views.\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\u003e70 mm f\/6.78 ED doublet:\u003c\/strong\u003e FPL51 and lanthanum special glass to control chromatic aberration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in two-element corrector:\u003c\/strong\u003e a 32 mm flat field with 100% correction, per SVBONY.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.5″ rack-and-pinion focuser:\u003c\/strong\u003e dual-speed knobs, 2″ reduction adapter, M54x0.75 female thread.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC-machined threads and bayonets:\u003c\/strong\u003e keep components aligned on the optical axis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetractable dew shield:\u003c\/strong\u003e adjustable length, 93 mm diameter, to block stray light and slow dew.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRings and dovetail included:\u003c\/strong\u003e a pair of tube rings and a dovetail plate come with the OTA.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6388152055595151626875041.jpg?v=1791669786\" alt=\"SVBONY SV503 70ED FPL51 ED glass objective panel\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eOptical and Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eA conventional doublet focuses onto a curved surface, so stars toward the edge of a camera sensor elongate unless a separate flattener is fitted at a precise distance. In the SV503 70ED, SVBONY installs a two-element corrector inside the tube, at the correct position for the objective, and specifies a 32 mm corrected circle. That covers APS-C-sized and smaller astronomy camera sensors. The working distance is 127.5 mm from the 2″ receptacle, so the camera needs no further corrector spacing.\u003c\/p\u003e\n\u003cp\u003eThe ED objective pairs FPL51 with a lanthanum element to bring colours to a common focus. The 2.5″ focuser carries the weight of a camera and filter train, and its fine knob makes precise focus at the sensor straightforward.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6388152055633744358730046.jpg?v=1791669786\" alt=\"SVBONY SV503 70ED coarse and fine focus knobs\" 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\/6388152055662702417666534.jpg?v=1791669786\" alt=\"SVBONY SV503 70ED 2.5 inch rack-and-pinion focuser detail\" 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\/6388152055691602675505988.jpg?v=1791669786\" alt=\"SVBONY SV503 70ED focuser close-up\" 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 emission nebulae, the Milky Way's star clouds and big galaxies with a dedicated astronomy camera.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNarrowband imaging:\u003c\/strong\u003e with filters in the 2″ or M54 train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable imaging:\u003c\/strong\u003e on compact equatorial mounts for travel and dark-site trips.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual observing:\u003c\/strong\u003e wide, flat star fields with a diagonal and eyepiece.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6388152055720417723956428.jpg?v=1791669786\" alt=\"SVBONY SV503 70ED CNC-machined threads and bayonets\" 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\/6388152055777188927520953.jpg?v=1791669786\" alt=\"SVBONY SV503 70ED retractable dew shield\" 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 M54x0.75 female thread on the focuser, plus a 2″ receptacle; working distance 127.5 mm from the 2″ receptacle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual use:\u003c\/strong\u003e SVBONY notes that a diagonal or an extension tube is needed to reach focus. A 2″-1.25″ adapter is included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor coverage:\u003c\/strong\u003e the 32 mm flat field suits sensors up to that diagonal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e the supplied rings and dovetail fit Vixen-style saddles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDew control:\u003c\/strong\u003e the 82 mm tube and 93 mm dew shield suit a dew heater strip; a matching SVBONY strip is among the add-ons on this page.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSVBONY also pairs this tube with its SV215 zoom eyepiece, a diagonal and a finder as a visual kit. If you want help matching a camera or filter train to the 127.5 mm working distance, send us your setup.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6388152055833357444592065.jpg?v=1791669786\" alt=\"SVBONY SV503 70ED OTA with SV215 zoom eyepiece visual bundle\" 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 SV503 70 f\/6.78 OTA\u003c\/li\u003e\n\u003cli\u003e1 x 2″-1.25″ adapter\u003c\/li\u003e\n\u003cli\u003e1 x lens cover\u003c\/li\u003e\n\u003cli\u003e1 x pair of telescope tube rings\u003c\/li\u003e\n\u003cli\u003e1 x dovetail plate\u003c\/li\u003e\n\u003cli\u003e1 x 1.25″ dust cover\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\u003eOptical tube only:\u003c\/strong\u003e no mount, diagonal, eyepiece or finder is included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocus for visual use:\u003c\/strong\u003e reaching focus with an eyepiece needs a diagonal or extension tube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo separate flattener required:\u003c\/strong\u003e the corrector is built in, so an external flattener is not part of the imaging train.\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. Mount it by the supplied rings and dovetail, thread or clamp a camera on the focuser and focus. With the flattener built in, there is no corrector spacing to work out.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a field flattener for imaging?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The two-element corrector inside the tube gives a 32 mm flat field.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the working distance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e127.5 mm from the 2″ receptacle.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it visually?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, with a diagonal or an extension tube to reach focus.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow heavy is it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2685 g (5.9 lb) including accessories, per SVBONY.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 70 mm f\/6.78 ED doublet with its flattener built into the tube, giving a 32 mm flat field at 474 mm in a 2685 g package. Add a mount and a camera, or a diagonal and eyepiece, and it is ready to use.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003ePerformance Data\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eSVBONY publishes an interferometer report for the upgraded SV503 70ED OTA.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6388542274366716395689892.webp?v=1791669786\" alt=\"SVBONY SV503 70ED upgraded OTA interferometer test report\" 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\/6388577507018417835308924.jpg?v=1791669786\" alt=\"SVBONY SV503 70ED interference report data\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"OTA","offer_id":67722208313455,"sku":"F9359E","price":511.58,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/sv503-f9359e-1_20251125135655_4795.webp?v=1791670041"},{"product_id":"svbony-sv503-80ed-f7-doublet-refractor-ota","title":"SVBONY SV503 80ED f\/7 ED Doublet Refractor Telescope OTA","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385916468716665477197960.jpg?v=1791670064\" alt=\"SVBONY SV503 80ED f\/7 ED doublet refractor OTA 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 SV503 80ED is an 80 mm f\/7 extra-low-dispersion doublet refractor with a 560 mm focal length. The objective uses an S-FPL51 ED element in an air-spaced two-element design with ultra-wideband coatings, and the 2″ dual-speed rack-and-pinion focuser rotates through 360°. It is built for both observing and astrophotography, in a white aluminum tube with a 103 mm outer diameter and a listed weight of 3950 g.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385916470682451337679882.jpg?v=1791670064\" alt=\"SVBONY SV503 80ED 80mm aperture light-gathering 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\u003eWant one refractor for viewing and imaging:\u003c\/strong\u003e 560 mm at f\/7 frames many nebulae and galaxies and gives crisp views of the Moon and planets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAre starting in astrophotography:\u003c\/strong\u003e an 80 mm ED doublet is a forgiving size for a first imaging scope on a modest equatorial mount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrefer a grab-and-go telescope:\u003c\/strong\u003e under 4 kg and quick to cool, it suits garden sessions and travel.\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\u003e80 mm f\/7 ED doublet:\u003c\/strong\u003e S-FPL51 extra-low-dispersion glass for good colour correction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-wideband coatings:\u003c\/strong\u003e on the objective for high light transmission.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2″ dual-speed focuser:\u003c\/strong\u003e rack-and-pinion with a 1:10 fine-focus ratio.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e360° rotating focuser:\u003c\/strong\u003e turn a camera to frame a target or an eyepiece to a comfortable angle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminum tube:\u003c\/strong\u003e 103 mm outer diameter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385916489227924086884170.jpg?v=1791670064\" alt=\"SVBONY SV503 80ED S-FPL51 ED lens chromatic aberration control\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eOptical and Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe SV503 80ED pairs an S-FPL51 extra-low-dispersion element with a second element in an air-spaced doublet. ED glass disperses colours more evenly than standard crown glass, so blue and red light come to focus much closer to green and bright objects show little false colour. At f\/7 the residual colour of an FPL51 doublet is low enough for colour imaging with a suitable flattener. SVBONY lists 1.5 arcseconds resolution, limiting magnitude 11.6 and 130.6x light-gathering power.\u003c\/p\u003e\n\u003cp\u003eThe focuser is a 2″ rack-and-pinion design with a coarse knob and a 1:10 fine knob, and the whole drawtube rotates so a camera can be squared to the frame without loosening the train.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385916486516701761528703.jpg?v=1791670064\" alt=\"SVBONY SV503 80ED dual-speed 2 inch rack-and-pinion focuser\" 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\/6385916492425226874600761.jpg?v=1791670064\" alt=\"SVBONY SV503 80ED 360 degree rotating focuser\" 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\u003eDeep-sky astrophotography:\u003c\/strong\u003e emission nebulae, galaxies and clusters, with a flattener for a flat field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual observing:\u003c\/strong\u003e wide, sharp star fields and high-contrast lunar and planetary views.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaytime and nature viewing:\u003c\/strong\u003e with a correct-image diagonal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385916494298629561667560.jpg?v=1791670064\" alt=\"SVBONY SV503 80ED for deep-space astrophotography\" 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\u003eFlattener:\u003c\/strong\u003e SVBONY offers this OTA with its SV193 0.8x reducer\/flattener for imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual accessories:\u003c\/strong\u003e a 2″ or 1.25″ diagonal and eyepieces are needed; SVBONY also pairs the tube with the SV182 finder and SV211 handle bar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e the tube mounts by dovetail on alt-azimuth or equatorial mounts. SVBONY's SV225 alt-azimuth mount is one of the add-ons on this page.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCameras and dew control:\u003c\/strong\u003e the add-ons on this page include SVBONY cameras and a dew heater strip sized for this tube.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you want help choosing a flattener, camera or spacing for your setup, send us your equipment list and we will work it out with you.\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 SV503 white 80ED f\/7 telescope OTA\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\u003eOptical tube only:\u003c\/strong\u003e no mount, diagonal, eyepiece or finder is included. The add-ons on this page cover visual kits, cameras, a mount and a dew strip.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField flatness for imaging:\u003c\/strong\u003e like any doublet, the native field is curved; the SV193 flattener corrects it for larger sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e SVBONY lists 540 x 215 x 230 mm.\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 it to a mount by its dovetail, add a diagonal and eyepiece or a camera, and focus. The optics need no collimation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it for visual use or imaging?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBoth. SVBONY designs the SV503 80ED for observing and astrophotography.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a flattener?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor visual use, no. For imaging with larger sensors, the SV193 0.8x reducer\/flattener gives round stars to the edge and a wider field.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow heavy is it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e3950 g, per SVBONY.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat magnification can it reach?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWith 560 mm focal length, a 10 mm eyepiece gives 56x and a 5 mm gives 112x.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: an 80 mm f\/7 FPL51 ED doublet with a rotating dual-speed 2″ focuser, suited to both visual observing and deep-sky imaging. Add a mount and either visual accessories or a flattener and camera, and it is ready to use.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"SV503 80ED","offer_id":67722242490479,"sku":"F9359B","price":568.58,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9359b-1_20251124085012_2480.webp?v=1791670183"},{"product_id":"svbony-sv550-122-apo-refractor-ota","title":"SVBONY SV550 122mm f\/7 Triplet APO Refractor Telescope OTA","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/F9381C_20260116101751_8223.webp?v=1791669966\" alt=\"SVBONY SV550 122 APO triplet refractor for visual observation and astrophotography\" 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 SV550 122 is a 122 mm, 854 mm focal length apochromatic triplet refractor working at f\/7. Its fully multi-coated objective uses an FPL51 ED centre element between two correcting elements, and the optical tube carries a 2.5″ rack-and-pinion dual-speed focuser with 1:10 fine focus and 87 mm of travel. SVBONY rates resolution at 1.15 arc seconds, a visual limiting magnitude of 12.3 and a highest useful magnification of 244x.\u003c\/p\u003e\n\u003cp\u003eThe aluminium tube is CNC machined, measures 154 mm in outer diameter and weighs 6440 g (14.18 lb) net. It rides in split tube rings with 26 screw holes and a carry handle on a 300 mm V-style dovetail, has a retractable dew shield, and ships in a protective carry case with shoulder and hand straps.\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 galaxies, nebulae and clusters:\u003c\/strong\u003e 854 mm frames mid-sized targets, and the SV209 0.8x reducer\/flattener widens that to f\/5.6 for faster imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eObserve visually:\u003c\/strong\u003e 122 mm of colour-corrected aperture gives bright, high-contrast views of the Moon, planets and double stars.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWant aperture you can still travel with:\u003c\/strong\u003e SVBONY designed the SV550 122 as a compact travel refractor, and the retracted dew shield shortens it for its case.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAre moving up from an 80 mm refractor:\u003c\/strong\u003e the 122 adds light grasp and resolution with the same style of focuser and accessory threads as the SV550 80.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt suits a confident first large refractor as well as an experienced imager's main deep-sky scope.\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\u003e122 mm f\/7 triplet apochromat:\u003c\/strong\u003e 854 mm focal length, FPL51 ED centre element, fully multi-coated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.5″ rack-and-pinion focuser:\u003c\/strong\u003e dual speed with 1:10 fine focus on coaxial knobs, 87 mm travel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSplit tube rings and handle:\u003c\/strong\u003e 26 screw holes for guide scopes, finders and accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300 mm V-style dovetail:\u003c\/strong\u003e room to balance a camera and guide scope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2″ front adapter and M63x1 thread:\u003c\/strong\u003e the 2″ adapter takes diagonals and cameras; the M63x1 female thread takes the SV209 reducer\/flattener.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEAF ready:\u003c\/strong\u003e SVBONY shows installation of an electronic auto focuser in place of the focus knob.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetractable dew shield\u003c\/strong\u003e and a finder shoe on the focuser.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385784897381725555232590.jpg?v=1791669966\" alt=\"SVBONY SV550 122 APO 300mm dovetail and tube rings with 26 screw holes\" 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\/6385784906495488411926031.jpg?v=1791669967\" alt=\"SVBONY SV550 122 APO 2.5 inch rack-and-pinion dual-speed focuser\" 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 SV550 122 is an air-spaced apochromatic triplet: an FPL51 ED element sits between two correcting elements to bring red, green and blue light to a common focus and keep false colour off bright stars and the lunar limb. Full multi-coating on the air-glass surfaces controls reflections and keeps contrast up, and the tube interior is blackened against stray light.\u003c\/p\u003e\n\u003cp\u003eAt f\/7 the native field is well suited to visual work and to imaging with the SV209 reducer\/flattener, which SVBONY specifies at 0.8x for this telescope, taking 854 mm to about 683 mm at f\/5.6 with 55 mm of back focus.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6382336968295659233955405.jpg?v=1791669967\" alt=\"SVBONY SV550 122 APO overview with multifunctional tube rings\" 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\u003eDeep-sky imaging:\u003c\/strong\u003e galaxies, nebulae and star clusters at 854 mm, or at f\/5.6 with the SV209.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual observing:\u003c\/strong\u003e Moon, planets and double stars up to SVBONY's rated 244x, plus bright deep-sky objects at low power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTravel and outreach:\u003c\/strong\u003e a refractor that needs no collimation and packs into its own case.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual:\u003c\/strong\u003e the 2″ front adapter accepts 2″ diagonals; eyepieces and diagonal are sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging:\u003c\/strong\u003e remove the 2″ adapter to reach the M63x1 female thread for the SV209 0.8x reducer\/flattener (55 mm back focus).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto focus:\u003c\/strong\u003e the focuser accepts an EAF; SVBONY shows the knob slide-off installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e 300 mm V-style (Vixen-style) dovetail. At 6440 g before camera and accessories, a mount with comfortable payload headroom keeps guiding smooth.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccessories:\u003c\/strong\u003e the tube rings' 26 screw holes and the focuser finder shoe take guide scopes and finders such as the SVBONY SV165.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you want to confirm a camera and filter train against the SV209's 55 mm back focus, send us your setup and we will work out the spacing with you.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385784908590904909764432.jpg?v=1791669966\" alt=\"SVBONY SV550 122 APO 2 inch interface and M63x1 thread\" 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\/6382336860672493845533977.jpg?v=1791669967\" alt=\"SVBONY SV550 122 APO tube ring lock screw\" 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\/6385784911183663287134031.jpg?v=1791669967\" alt=\"SVBONY SV550 122 APO EAF installation steps\" 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 SV550 122 APO optical tube with tube rings, handle and 300 mm dovetail\u003c\/li\u003e\n\u003cli\u003e1 x protective carry case with removable shoulder strap and hand strap\u003c\/li\u003e\n\u003cli\u003eFinder shoe on the focuser and retractable dew shield (fitted)\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\u003eOptical tube only:\u003c\/strong\u003e no mount, diagonal, eyepiece or reducer is included. SVBONY's bundle sets and the add-ons on this page cover those.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat-field imaging:\u003c\/strong\u003e full-field astrophotography uses the SV209 0.8x reducer\/flattener on the M63x1 thread.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 6440 g net for the tube; the packed shipment is 10000 g gross.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDew:\u003c\/strong\u003e on humid Ontario nights a dew heater around the dew shield keeps the objective clear.\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 tube arrives assembled in its rings on the dovetail. Drop it into a Vixen-style saddle, add a 2″ diagonal and eyepiece, and it is ready to observe; for imaging, swap the 2″ adapter for the SV209.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich flattener does it use?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe SV209 0.8x reducer\/flattener for the SV550 122, which threads to the M63x1 connection and needs 55 mm of back focus.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it for visual or imaging?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBoth. SVBONY designed it for visual observing and astrophotography.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I fit an electronic focuser?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The focuser accepts an EAF in place of the coarse focus knob.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it come with a case?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, a protective carry case with shoulder and hand straps is included.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the outer diameter of the tube?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e154 mm, the figure to use when choosing a dew heater strip.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 122 mm f\/7 FPL51 triplet apochromat with a 2.5″ dual-speed focuser, rings, handle, 300 mm dovetail and case, ready for visual observing and, with the SV209 0.8x reducer\/flattener, deep-sky imaging at f\/5.6. Add a mount and your visual or imaging accessories to complete it.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"OTA","offer_id":67722251108463,"sku":"F9381C","price":1936.58,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/SV550-Ff9381C-0_20251210140405_4985.webp?v=1791670220"},{"product_id":"svbony-sv550-80-apo-refractor-ota","title":"SVBONY SV550 80mm f\/6 Triplet APO Refractor Telescope OTA","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385786260865097382914658.jpg?v=1791669989\" alt=\"SVBONY SV550 80 APO triplet refractor OTA\" 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 SV550 80 is an 80 mm, 480 mm focal length apochromatic triplet refractor working at f\/6. Its three-element objective pairs one FPL51 ED element with two correcting elements under full multi-coating, and SVBONY rates resolution at 1.45 arc seconds with a limiting stellar magnitude of 11.6. A 2.5″ rack-and-pinion focuser with 1:10 dual-speed fine focus carries up to 5 kg over 80 mm of travel.\u003c\/p\u003e\n\u003cp\u003eThe aluminium tube is 103 mm in outer diameter with a retractable dew shield, split tube rings and a Vixen-style dovetail (SVBONY lists 150–175 mm). Net weight is 3750 g, with the bare barrel at 2900 g. Behind the 2″ adapter sits an M63x1 female thread for the SV209 field flattener.\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 deep-sky targets:\u003c\/strong\u003e 480 mm at f\/6 frames large nebulae, galaxies such as M31 and M33, and open clusters, and the SV209 flattens the field for full-frame sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTravel with your telescope:\u003c\/strong\u003e SVBONY built the SV550 80 as a compact travel refractor for observing and imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eObserve with colour-free views:\u003c\/strong\u003e the triplet design keeps false colour off bright stars, the Moon and planets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWant a first apochromat:\u003c\/strong\u003e the SV550 80 is a straightforward step up from an achromat or a doublet ED scope.\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\u003e80 mm f\/6 triplet apochromat:\u003c\/strong\u003e 480 mm focal length with an FPL51 ED element and full multi-coating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.5″ rack-and-pinion focuser:\u003c\/strong\u003e dual speed at 1:10, 5 kg load rating and 80 mm travel; SVBONY notes the large drawtube helps control vignetting with full-frame cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStray-light control:\u003c\/strong\u003e four internal extinction rings and a blackened interior.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM63x1 female thread:\u003c\/strong\u003e for the SV209 flattener, reached by removing the 2″ adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetractable dew shield\u003c\/strong\u003e and a finder base on the focuser.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385786269457637911148658_a229b8b5-af89-4d52-affb-f6420e533660.jpg?v=1791669989\" alt=\"SVBONY SV550 80 APO 2.5 inch 1:10 dual-speed focuser\" 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\/6385786270626150129582176.jpg?v=1791669989\" alt=\"SVBONY SV550 80 APO stray light elimination with internal baffles\" 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 objective is a three-element apochromat: an S-FPL51 ED element works with two correcting elements to bring the visible spectrum to a common focus, which keeps blue fringing off bright stars and lunar edges. SVBONY reports a 15.8% image-quality improvement over its earlier design by spectrometer calculation. Full multi-coating, a blackened tube and internal extinction rings keep contrast high against a bright sky.\u003c\/p\u003e\n\u003cp\u003eAt f\/6 and 480 mm the native field suits wide deep-sky framing. For flat stars across larger sensors, the SV209 is a 1.0x flattener for this telescope that keeps the focal length and focal plane, with 55 mm back focus via its M48 adapter.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385786268366263966649124_6c32f826-55f9-40c7-80f1-7ad0b53bd408.jpg?v=1791669989\" alt=\"SVBONY SV550 80 APO apochromatic 3-element objective\" 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\u003eDeep-sky imaging:\u003c\/strong\u003e nebulae, galaxies and star clusters at 480 mm f\/6.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual observing:\u003c\/strong\u003e wide, colour-corrected views of star fields, the Moon and planets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTravel astronomy:\u003c\/strong\u003e a light, compact tube for dark-site trips.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385786271835488327914161_8b2550d3-d366-4a76-bcba-a2e66cc0932a.jpg?v=1791669989\" alt=\"SVBONY SV550 80 APO 480mm focal length\" 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\u003eVisual:\u003c\/strong\u003e 2″ front adapter for 2″ diagonals; diagonal and eyepieces are sold separately (the SVBONY SV223 diagonal and SV230 or SV215 zoom eyepieces are offered alongside it by SVBONY).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging:\u003c\/strong\u003e SVBONY's instructions remove the 2″ adapter by loosening three small screws with an Allen wrench, exposing the M63x1 thread for the SV209 flattener.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus:\u003c\/strong\u003e 55 mm with the SV209 and its M48 adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Vixen-style dovetail on split rings; at 3750 g the tube suits compact equatorial mounts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you would like your camera and filter spacing checked against the 55 mm figure, send us your setup and we will work it out with you.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6386891697345894694624712_6f874469-edbb-43fb-8451-61bff4911a46.jpg?v=1791669989\" alt=\"SVBONY SV550 80 APO 2 inch adapter removal for the SV209 flattener\" 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\u003eOptical tube only:\u003c\/strong\u003e no mount, diagonal, eyepiece or flattener is included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat-field imaging:\u003c\/strong\u003e full-frame flat fields use the SV209 1.0x flattener, sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDovetail length:\u003c\/strong\u003e SVBONY's spec table lists 150–175 mm, while its feature list mentions a 180 mm plate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStyle option:\u003c\/strong\u003e SVBONY also offers an SV550 Visual Set; this listing is the OTA.\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 tube comes in its rings on a Vixen-style dovetail. Add a 2″ diagonal and eyepiece to observe; for imaging, three screws release the 2″ adapter and the SV209 threads on.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich flattener does it use?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe SV209 1.0x flattener for the SV550 80 F6, with 55 mm back focus.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it carry a heavy camera?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSVBONY rates the 2.5″ focuser at 5 kg.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it for visual or imaging?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBoth. SVBONY designed it for observation and astrophotography.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the tube outer diameter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e103 mm, useful when choosing a dew heater.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: an 80 mm f\/6 FPL51 triplet apochromat with a 2.5″ dual-speed focuser rated to 5 kg and an M63 thread for the SV209 flattener, at 3750 g. Add a mount and a diagonal or camera, and it is ready for travel observing and deep-sky imaging.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"SV550 80 APO OTA","offer_id":67722264379503,"sku":"F9381A","price":796.58,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9381a-1_20251127163257_0907.webp?v=1791670288"},{"product_id":"svbony-sv48p-102-achromatic-refractor-ota","title":"SVBONY SV48P 102mm f\/6.5 Achromatic Refractor Telescope OTA with 2.5″ Dual-Speed Focuser","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385725975844161139386844.jpg?v=1791670118\" alt=\"SVBONY SV48P 102mm f\/6.5 achromatic refractor 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 SV48P 102 is a 102 mm achromatic refractor optical tube with a 663 mm focal length at f\/6.5. It uses an air-spaced doublet objective with full multi-coating, a 2.5″ rack-and-pinion dual-speed focuser with 1:10 fine focus and millimetre markings on the drawtube, and integral tube rings on a 210 mm dovetail plate.\u003c\/p\u003e\n\u003cp\u003eThe focuser takes 2″ accessories directly and 1.25″ accessories through the supplied adapter. The OTA weighs 3400 g and measures 720 × 270 × 230 mm.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385639312479542699673001.jpg?v=1791670117\" alt=\"SVBONY SV48P 102mm large aperture light-gathering 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\u003eWant a bright, wide-field visual refractor:\u003c\/strong\u003e 102 mm at f\/6.5 frames star clusters, the Moon and larger nebulae with low-power eyepieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eObserve the Moon and planets too:\u003c\/strong\u003e with the SV231 correction filter, SVBONY's recommended pairing, colour fringing on bright targets is reduced.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWant room to grow:\u003c\/strong\u003e the 2.5″ focuser and 2″ eyepiece support take wide-field eyepieces and heavier diagonals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAre choosing a first serious telescope:\u003c\/strong\u003e a refractor needs no collimation and is ready as soon as it is mounted.\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\u003e102 mm air-spaced achromatic doublet:\u003c\/strong\u003e fully multi-coated (FMC) for light transmission and contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e663 mm focal length, f\/6.5:\u003c\/strong\u003e a middle ground between fast wide-field and slow high-power refractors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.5″ rack-and-pinion dual-speed focuser:\u003c\/strong\u003e coarse focus plus 1:10 fine focus, with millimetre markings on the drawtube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLight-leak control:\u003c\/strong\u003e SVBONY designs the tube to reduce light leakage for a clearer view.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegral tube rings on a 210 mm dovetail:\u003c\/strong\u003e holds the tube stable and the optics aligned.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinder bracket:\u003c\/strong\u003e dovetail slots for a finder scope.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385725980013568067881363.jpg?v=1791670117\" alt=\"SVBONY SV48P 102 2.5 inch dual-speed rack-and-pinion focuser\" 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\/6385639312536133061105579.jpg?v=1791670118\" alt=\"SVBONY SV48P 102 light-leak reduction design\" 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\/6385639312642410568399158.jpg?v=1791670117\" alt=\"SVBONY SV48P 102 integral tube rings and 210mm dovetail plate\" 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 SV48P uses a two-element, air-spaced achromatic objective. An achromat brings two wavelengths to a common focus, which gives sharp, high-contrast views across most of the visible spectrum; at f\/6.5 a faint violet fringe can show around the brightest objects such as the Moon's limb, Venus and Jupiter. SVBONY's SV231 chromatic aberration correction filter is designed to reduce that fringe.\u003c\/p\u003e\n\u003cp\u003eThe f\/6.5 focal ratio sits between fast f\/4–f\/5 instruments and slow f\/11–f\/15 instruments, giving a wider, brighter field than a long-focus refractor while keeping enough focal length for the Moon and planets. Full multi-coating on the lens surfaces keeps colours natural and the background dark.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385639312508347554601420.jpg?v=1791670118\" alt=\"SVBONY SV48P 102 f\/6.5 focal ratio comparison 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\/6385639312563228196064239.jpg?v=1791670117\" alt=\"SVBONY SV48P 102 fully multi-coated objective lens\" 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 visual observing:\u003c\/strong\u003e open clusters, the Pleiades, the Double Cluster and bright nebulae.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar and planetary viewing:\u003c\/strong\u003e the Moon, Jupiter and Saturn at moderate magnification, best with the SV231 filter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNebulae and galaxies:\u003c\/strong\u003e SVBONY positions the f\/6.5 ratio for brighter views of extended objects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaytime terrestrial viewing:\u003c\/strong\u003e with an erecting diagonal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyepieces:\u003c\/strong\u003e 2″ directly, 1.25″ through the supplied adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual set-up:\u003c\/strong\u003e SVBONY describes using the SV48P with a diagonal, eyepiece and finder scope; none of these are included with the OTA.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour correction:\u003c\/strong\u003e the SVBONY SV231 correction filter is SVBONY's recommended companion for bright targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e 210 mm dovetail plate on integral rings. At 3400 g the OTA suits a sturdy alt-az or small equatorial mount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocuser rotation:\u003c\/strong\u003e the focuser is not 360° rotatable.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385639334981608109564622.jpg?v=1791670118\" alt=\"SVBONY SV48P 102 with SV231 chromatic aberration correction filter\" 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\/sv48p-102-engineering-drawing_20251011092026_9322.jpg?v=1791670118\" alt=\"SVBONY SV48P 102 engineering drawing with 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\u003e102 mm f\/6.5 telescope OTA\u003c\/li\u003e\n\u003cli\u003e210 mm dovetail mounting plate with tube rings\u003c\/li\u003e\n\u003cli\u003eFinder scope dovetail slots\u003c\/li\u003e\n\u003cli\u003e2″ to 1.25″ adapter\u003c\/li\u003e\n\u003cli\u003eLens cover\u003c\/li\u003e\n\u003cli\u003e1.25″ dust cover\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\u003eOptical tube only:\u003c\/strong\u003e no mount, tripod, diagonal, eyepiece or finder is included. SVBONY also offers the SV48P 102 in visual sets with these accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAchromatic optics:\u003c\/strong\u003e some false colour shows on the brightest targets at f\/6.5; the SV231 filter reduces it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual first:\u003c\/strong\u003e the SV48P 102 is designed and described by SVBONY for visual observing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDew:\u003c\/strong\u003e a dew heater strip around the lens cell keeps the objective clear on humid nights.\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 dovetail on the integral rings drops into the mount saddle, and a diagonal and eyepiece complete it. A refractor needs no collimation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it take 2″ eyepieces?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The 2.5″ focuser accepts 2″ accessories directly, and the supplied adapter takes 1.25″ eyepieces.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the fine-focus ratio?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e1:10, on a rack-and-pinion focuser with millimetre markings.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much does it weigh?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e3400 g for the OTA.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill I see false colour?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn the brightest objects a faint fringe is normal for an f\/6.5 achromat; SVBONY pairs the SV48P with its SV231 correction filter to reduce it.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 102 mm f\/6.5 air-spaced achromatic refractor with a 2.5″ dual-speed focuser, integral rings and a 210 mm dovetail, weighing 3400 g. Add a mount, a diagonal and eyepieces for bright, wide-field visual observing.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"OTA","offer_id":67722339680367,"sku":"F9341C","price":327.74,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/sv48p-f9341c-1_20251127104331_9477.webp?v=1791670610"},{"product_id":"svbony-sv48p-90-achromatic-refractor-ota","title":"SVBONY SV48P 90mm f\/5.5 Achromatic Refractor Telescope OTA","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385785867194625444857257.jpg?v=1791670127\" alt=\"SVBONY SV48P 90mm f\/5.5 achromatic refractor 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 SV48P 90 is a 90 mm achromatic refractor optical tube with a 500 mm focal length at f\/5.5. The air-spaced doublet objective uses ZF4\/K9 glass with full multi-coating, and the tube carries a 2″ rack-and-pinion dual-speed focuser with a 1:10 reduction ratio that rotates through 360° for framing.\u003c\/p\u003e\n\u003cp\u003eThe tube has a 108 mm outer diameter, a net body weight of 2730 g, and a dovetail plate for mounting. It takes 2″ accessories directly and 1.25″ accessories through an adapter.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1_20260304100225_8326.webp?v=1791670741\" alt=\"SVBONY SV48P 90mm achromatic refractor OTA\" 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\u003eWant a wide-field refractor:\u003c\/strong\u003e 500 mm at f\/5.5 frames large star fields, clusters and extended nebulae.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWant to try deep-sky astrophotography:\u003c\/strong\u003e SVBONY positions the SV48P 90 for imaging, and the rotatable focuser helps with framing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTravel with your telescope:\u003c\/strong\u003e a compact tube that rides on light mounts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAre choosing a first refractor:\u003c\/strong\u003e no collimation, and ready as soon as it is mounted.\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\u003e90 mm f\/5.5 achromatic doublet:\u003c\/strong\u003e air-spaced ZF4\/K9 objective, fully multi-coated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2″ RAP dual-speed focuser:\u003c\/strong\u003e 1:10 fine focus for precise focusing with eyepieces or a camera.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e360° rotatable focuser:\u003c\/strong\u003e turn the camera or diagonal without moving the tube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-green coated optics:\u003c\/strong\u003e SVBONY specifies them for light transmission and reduced false colour.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDovetail plate included:\u003c\/strong\u003e for tripods and equatorial mounts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2″ to 1.25″ adapter:\u003c\/strong\u003e for 1.25″ eyepieces and accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385785868686586703944337.jpg?v=1791670127\" alt=\"SVBONY SV48P 90 2 inch dual-speed 1:10 rack-and-pinion focuser\" 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 SV48P 90 uses a two-element, air-spaced achromatic objective. An achromat brings two colours to a common focus and gives sharp, contrasty images across most of the spectrum; at f\/5.5 a violet fringe shows around the very brightest objects, which a colour-correction filter such as SVBONY's SV231 reduces. The short focal ratio gives a bright, wide field that suits star fields, clusters and large nebulae.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385785869954858985345111.jpg?v=1791670127\" alt=\"SVBONY SV48P 90mm objective light-gathering 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 visual observing:\u003c\/strong\u003e the Pleiades, the Double Cluster, the Andromeda Galaxy and Milky Way star fields.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep-sky astrophotography:\u003c\/strong\u003e large nebulae and star fields with a DSLR or astronomy camera.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Moon:\u003c\/strong\u003e the whole disc fits easily in the field at low power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaytime nature viewing:\u003c\/strong\u003e with an erecting diagonal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyepieces and diagonals:\u003c\/strong\u003e 2″ directly; 1.25″ through the adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCameras:\u003c\/strong\u003e the 2″ focuser accepts camera adapters, and the rotation sets framing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e the included dovetail plate fits tripods and equatorial mounts; at 2730 g the tube suits light mounts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDew control:\u003c\/strong\u003e the tube's outer diameter is 108 mm, the figure for a dew heater strip.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385785871227435388189092.jpg?v=1791670126\" alt=\"SVBONY SV48P 90 included dovetail plate\" 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\/2_20260304100227_9588.webp?v=1791670741\" alt=\"SVBONY SV48P 90mm achromatic refractor OTA focuser detail\" 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\u003eOptical tube only:\u003c\/strong\u003e no mount, diagonal or eyepiece is included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSV231 style label:\u003c\/strong\u003e SVBONY's style selector for this listing reads “OTA-SV231 Fringe Killer”; contact us and we will confirm whether the SV231 filter ships with it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage list:\u003c\/strong\u003e SVBONY does not publish a separate contents list for the OTA beyond the dovetail plate and adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAchromatic optics:\u003c\/strong\u003e some false colour is visible on the brightest targets at f\/5.5.\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 dovetail plate drops into the mount saddle, and a diagonal and eyepiece or a camera complete it. A refractor needs no collimation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it for astrophotography?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. SVBONY describes it as an imaging OTA for deep-sky work, and the rotatable 1:10 focuser helps with focus and framing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the focuser rotate?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, through 360°.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much does it weigh?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2730 g (96.3 oz) for the tube.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 90 mm f\/5.5 achromatic refractor with a 360° rotatable 2″ dual-speed focuser and dovetail plate, weighing 2730 g, for wide-field viewing and deep-sky imaging. Add a mount and a diagonal and eyepiece or camera.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"OTA","offer_id":67722365337711,"sku":"F9341A","price":297.83,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9341-0_20251127141737_6996.webp?v=1791670741"},{"product_id":"svbony-sv501p-60-400-portable-refractor","title":"SVBONY SV501P 60\/400 Portable Refractor Telescope with Tripod and Backpack","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6378079009619100094965145.jpg?v=1791670146\" alt=\"SVBONY SV501P 60\/400 portable refractor 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 SV501P 60\/400 is a complete travel refractor: a 60 mm (2.36″) objective with a 400 mm focal length at f\/6.4, supplied with a K20 mm 1.25″ eyepiece (20x), a 5x24 optical finder, a 45° correct-image prism diagonal, a 20 mm-leg aluminium alloy tripod and a portable backpack. The whole set weighs 2170 g.\u003c\/p\u003e\n\u003cp\u003eThe objective is a multi-coated two-element, two-group design, and the focuser is metal with two locking screws and a brass compression ring that holds eyepieces without marring them.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6378079010859040803374935.jpg?v=1791670146\" alt=\"SVBONY SV501P 60mm refractor 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\/6378079012156016317898687.jpg?v=1791670146\" alt=\"SVBONY SV501P 60mm refractor optics 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\u003eWant a first telescope that is ready to use:\u003c\/strong\u003e everything needed for a first night out is in the backpack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAre buying for a young observer or as a gift:\u003c\/strong\u003e tool-free assembly and an upright image keep it simple.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTravel or hike:\u003c\/strong\u003e the backpack and 2170 g weight make it easy to carry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWant both sky and daytime viewing:\u003c\/strong\u003e the correct-image diagonal gives an upright, correctly oriented view for landscapes and wildlife.\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\u003e60 mm, 400 mm, f\/6.4 refractor:\u003c\/strong\u003e multi-coated 2-element \/ 2-group objective.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal focuser with brass compression ring:\u003c\/strong\u003e two locking screws hold accessories securely without scratching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e45° correct-image prism diagonal:\u003c\/strong\u003e upright, left-to-right-correct images for astronomy and daytime use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eK20 mm eyepiece:\u003c\/strong\u003e 20x, a medium-power starting point for the Moon and terrestrial targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5x24 optical finder:\u003c\/strong\u003e for aiming at targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminium tripod and backpack:\u003c\/strong\u003e a 20 mm-leg tripod and a fitted bag 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\/6378079014190303506965231.jpg?v=1791670146\" alt=\"SVBONY SV501P 60mm refractor metal focuser with brass ring\" 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\/6378079015375704175918447.jpg?v=1791670146\" alt=\"SVBONY SV501P 60mm refractor 45 degree correct-image diagonal\" 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\/6378079016671425194969922.jpg?v=1791670146\" alt=\"SVBONY SV501P 60mm refractor K20mm eyepiece and 5x24 finder\" 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 SV501P uses a two-element refracting objective with multi-coated optical glass. At 400 mm focal length and f\/6.4, the field is wide enough to take in the whole Moon with room to spare, and the 20x eyepiece supplied gives a bright, steady view. A refractor holds its alignment for life and needs no collimation, which keeps a small travel scope dependable.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6378079017976117131491135.jpg?v=1791670146\" alt=\"SVBONY SV501P 60mm refractor optical 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\/6378079019183249709071433.jpg?v=1791670146\" alt=\"SVBONY SV501P 60mm refractor multi-coated objective 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\u003eThe Moon:\u003c\/strong\u003e craters, maria and the terminator at 20x and above.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBright planets:\u003c\/strong\u003e Jupiter's moons and Saturn's rings with a higher-power eyepiece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerrestrial viewing:\u003c\/strong\u003e landscapes, birds and wildlife with the upright image.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTravel and outreach:\u003c\/strong\u003e a quick-setup scope for camping trips and backyards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6378079020500957083767373.jpg?v=1791670146\" alt=\"SVBONY SV501P 60mm refractor lunar and terrestrial uses 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\/6378079021690925467614141.jpg?v=1791670146\" alt=\"SVBONY SV501P 60mm refractor observing 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\u003eEyepieces:\u003c\/strong\u003e the focuser takes standard 1.25″ eyepieces, so a higher-power eyepiece or a zoom eyepiece is a direct upgrade.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilters:\u003c\/strong\u003e standard 1.25″ filters thread onto 1.25″ eyepieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolar viewing:\u003c\/strong\u003e only with a certified full-aperture solar filter fitted over the objective.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6378079025725480763855670.jpg?v=1791670146\" alt=\"SVBONY SV501P 60mm refractor tripod 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\/6378079027193327487195007.jpg?v=1791670146\" alt=\"SVBONY SV501P 60mm refractor backpack panel\" 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\u003cp\u003ePer SVBONY's specification:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSV501P 60\/400 refractor\u003c\/li\u003e\n\u003cli\u003eK20 mm 1.25″ eyepiece (20x)\u003c\/li\u003e\n\u003cli\u003e5x24 optical finder scope\u003c\/li\u003e\n\u003cli\u003e45° correct-image prism diagonal, 1.25″\u003c\/li\u003e\n\u003cli\u003e20 mm diameter aluminium alloy tripod\u003c\/li\u003e\n\u003cli\u003ePortable backpack\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6378079028403409669585834.jpg?v=1791670146\" alt=\"SVBONY SV501P 60mm refractor package contents panel\" 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\u003eSmall aperture:\u003c\/strong\u003e 60 mm shows the Moon, bright planets and daytime targets well; faint galaxies and nebulae need more aperture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLight tripod:\u003c\/strong\u003e the 20 mm-leg tripod is built for portability, so a gentle touch at higher power keeps the view steady.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne eyepiece supplied:\u003c\/strong\u003e the K20 mm gives 20x; a second, shorter eyepiece adds higher magnification.\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. SVBONY designs it for tool-free setup: open the tripod, attach the telescope, slide in the diagonal and eyepiece, and it is ready.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it in the daytime?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The correct-image prism diagonal gives an upright, correctly oriented view.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat magnification does it give?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e20x with the supplied K20 mm eyepiece. Other 1.25″ eyepieces change the magnification.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much does it weigh?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2170 g, as published by SVBONY.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 60 mm f\/6.4 travel refractor with eyepiece, finder, correct-image diagonal, aluminium tripod and backpack, ready for the Moon, bright planets and daytime viewing straight out of the bag.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"60\/400 with Tripod","offer_id":67722384801903,"sku":"F9348E","price":80.74,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9348e-0_20251231163729_0907.webp?v=1791670833"},{"product_id":"svbony-sv501p-70-400-portable-refractor","title":"SVBONY SV501P 70\/400 Portable Refractor Telescope with SV101 Tripod and Backpack","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6378079087691935966742794.jpg?v=1791670155\" alt=\"SVBONY SV501P 70\/400 portable refractor 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 SV501P 70\/400 is a complete portable refractor with a 70 mm (2.75″) multi-coated objective, a 400 mm focal length and an f\/5.7 focal ratio. This F9348A kit includes the SV101 aluminium alloy tripod, a K20 mm 1.25″ eyepiece (20x), a 5x24 optical finder, a 45° correct-image prism diagonal and a portable backpack, with a published weight of 2950 g.\u003c\/p\u003e\n\u003cp\u003eThe tube uses a two-element, two-group objective and an anodized aluminium 1.25″ focusing eyepiece adapter with two locking screws, and SVBONY designs the kit for tool-free assembly.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6378079090179771221036279.jpg?v=1791670155\" alt=\"SVBONY SV501P 70mm refractor 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\/6378079091714727825175982.jpg?v=1791670155\" alt=\"SVBONY SV501P 70mm refractor optics 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\u003eWant a first telescope with everything included:\u003c\/strong\u003e tripod, eyepiece, finder, diagonal and carrying bag come together.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTravel, camp or hike:\u003c\/strong\u003e the backpack keeps the whole kit together and portable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWant daytime and night use:\u003c\/strong\u003e the correct-image diagonal gives upright views of landscapes and wildlife.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAre buying for a family or young observer:\u003c\/strong\u003e setup needs no tools and no collimation.\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\u003e70 mm, 400 mm, f\/5.7 refractor:\u003c\/strong\u003e multi-coated 2E\/2G objective for bright, high-contrast views.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStray light control:\u003c\/strong\u003e SVBONY designs the tube to minimize internal reflections and glare.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e45° erect-image prism diagonal:\u003c\/strong\u003e right-side-up, left-to-right-correct images.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eK20 mm eyepiece and 5x24 finder:\u003c\/strong\u003e a medium-power 20x view and an easy aiming aid.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSV101 aluminium alloy tripod:\u003c\/strong\u003e light and stable for travel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable backpack:\u003c\/strong\u003e carries the telescope and accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6378079092812354575259886.jpg?v=1791670155\" alt=\"SVBONY SV501P 70mm refractor focuser and eyepiece adapter\" 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\/6378079094460137315806295.jpg?v=1791670155\" alt=\"SVBONY SV501P 70mm refractor 45 degree erect-image diagonal\" 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\/6378079096421929813003882.jpg?v=1791670155\" alt=\"SVBONY SV501P 70mm refractor K20mm eyepiece and 5x24 finder\" 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 SV501P 70 is a two-element refractor with multi-coated optical glass. At 400 mm and f\/5.7 it gives a wide, bright field that frames the whole Moon, large star fields and open clusters, with enough focal length to show Jupiter's moons and Saturn's rings with a shorter eyepiece. As a refractor it needs no collimation.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6378079098489364564844650.jpg?v=1791670155\" alt=\"SVBONY SV501P 70mm refractor optical design 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\u003eLunar observing:\u003c\/strong\u003e the whole disc at 20x, crater detail with higher-power eyepieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBright planets:\u003c\/strong\u003e Jupiter's moons, Saturn's rings and the phases of Venus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolar observing:\u003c\/strong\u003e SVBONY lists solar observation, which requires a certified full-aperture solar filter over the objective.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaytime nature viewing:\u003c\/strong\u003e upright images of landscapes and wildlife.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6378079099747435526635554.jpg?v=1791670155\" alt=\"SVBONY SV501P 70mm refractor lunar and planetary uses 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\/6378079101270936643630274.jpg?v=1791670155\" alt=\"SVBONY SV501P 70mm refractor observing 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\u003eEyepieces:\u003c\/strong\u003e standard 1.25″ eyepieces fit the focusing adapter, so a shorter eyepiece or a zoom is a direct upgrade.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilters:\u003c\/strong\u003e 1.25″ filters thread onto 1.25″ eyepieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolar viewing:\u003c\/strong\u003e only with a certified full-aperture solar filter over the objective.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTripod-free version:\u003c\/strong\u003e SVBONY also lists an F9348C configuration without the tripod; ask us if you would prefer it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6378079102498370708174839.jpg?v=1791670155\" alt=\"SVBONY SV501P 70mm refractor SV101 tripod 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\/6378079104254546244536845.jpg?v=1791670155\" alt=\"SVBONY SV501P 70mm refractor backpack panel\" 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\u003cp\u003ePer SVBONY's specification for F9348A:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSV501P 70\/400 refractor with 1.25″ focusing eyepiece adapter\u003c\/li\u003e\n\u003cli\u003eK20 mm 1.25″ eyepiece (20x)\u003c\/li\u003e\n\u003cli\u003e5x24 optical finder scope\u003c\/li\u003e\n\u003cli\u003e45° correct-image prism diagonal, 1.25″\u003c\/li\u003e\n\u003cli\u003eSV101 aluminium alloy tripod\u003c\/li\u003e\n\u003cli\u003ePortable backpack\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6378079106251948044027764.jpg?v=1791670155\" alt=\"SVBONY SV501P 70mm refractor package contents panel\" 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\u003eAperture:\u003c\/strong\u003e 70 mm shows the Moon, bright planets, double stars and bright clusters well; faint galaxies need a larger aperture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne eyepiece supplied:\u003c\/strong\u003e the K20 mm gives 20x; adding a shorter eyepiece raises the magnification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLight tripod:\u003c\/strong\u003e built for portability, it is steadiest at low and medium power.\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. Setup is tool-free: open the SV101 tripod, attach the telescope, add the diagonal and eyepiece, and it is ready.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the tripod included?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. This F9348A kit includes the SV101 aluminium alloy tripod.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it for daytime viewing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The correct-image prism diagonal gives an upright, correctly oriented image.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much does it weigh?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2950 g, as published by SVBONY for the kit with tripod.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 70 mm f\/5.7 portable refractor with SV101 tripod, eyepiece, finder, erect-image diagonal and backpack, ready for the Moon, bright planets and daytime viewing.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"70\/400 with SV101 Tripod","offer_id":67722393682031,"sku":"F9348A","price":113.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9348a-0_20251231163208_1701.webp?v=1791670882"},{"product_id":"svbony-sv503-102ed-f7-doublet-refractor-ota","title":"SVBONY SV503 102ED f\/7 ED Doublet Refractor Telescope OTA","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385864033860635259317905.jpg?v=1791670166\" alt=\"SVBONY SV503 102mm f\/7 ED refractor OTA 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 SV503 102ED is a 102 mm (4.01″) ED doublet refractor with a 714 mm focal length at f\/7. Its objective uses an S-FPL51 extra-low-dispersion element with SMC multi-coatings, and the CNC-machined aluminium tube carries a 2″ rack-and-pinion focuser with 1:10 fine movement and a retractable lens hood.\u003c\/p\u003e\n\u003cp\u003eSVBONY lists a tube weight of 5.7 kg with rings, a 121 mm tube outer diameter, a 630 mm OTA length and a 200 mm dovetail on the rings. A 2″ to 1.25″ adapter is included for eyepieces and cameras.\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\u003eWant a 4″ refractor for both viewing and imaging:\u003c\/strong\u003e 102 mm at f\/7 covers lunar and planetary work and larger deep-sky targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValue true colour:\u003c\/strong\u003e the ED element keeps bright stars and planets free of heavy false colour.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImage nebulae and galaxies:\u003c\/strong\u003e SVBONY positions the SV503 102 for astrophotography and deep-sky stargazing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAre stepping up from a smaller refractor:\u003c\/strong\u003e more aperture and resolution in a tube that still travels.\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\u003eS-FPL51 ED doublet:\u003c\/strong\u003e reduces chromatic aberration for colour-true views and images.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2″ dual-speed rack-and-pinion focuser:\u003c\/strong\u003e 1:10 fine control, built to support cameras and heavier accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.17 arc-second resolving capacity:\u003c\/strong\u003e with limiting magnitude 12.1 and 212x light-gathering capacity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC-machined aluminium tube:\u003c\/strong\u003e finished in fine-grained paint, with a retractable lens hood.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOTA rings with 200 mm dovetail:\u003c\/strong\u003e for direct mounting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25″ and 2″ compatibility:\u003c\/strong\u003e 2″ to 1.25″ adapter included.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385864040112857103443120.jpg?v=1791670166\" alt=\"SVBONY SV503 102 dual-speed rack-and-pinion focuser\" 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\/6386769643222033447886939.jpg?v=1791670166\" alt=\"SVBONY SV503 102 focuser close-up\" 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 SV503 102 is a two-element refractor with one S-FPL51 ED element. ED glass disperses colour far less than standard crown glass, so red, green and blue focus much closer together and the violet halo typical of achromats is greatly reduced on bright stars, the Moon and planets. SMC multi-coatings keep transmission high and the background dark.\u003c\/p\u003e\n\u003cp\u003eThe 102 mm aperture gives 1.17 arc-second resolution by SVBONY's figure and a maximum useful magnification of 204x, while f\/7 keeps the field wide enough for nebulae, clusters and galaxies.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385864038539926774599361.jpg?v=1791670166\" alt=\"SVBONY SV503 102 S-FPL51 ED extra-low dispersion glass\" 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\/6385864043011957137062661.jpg?v=1791670166\" alt=\"SVBONY SV503 102 1.17 arc-second resolution 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\u003eDeep-sky astrophotography:\u003c\/strong\u003e nebulae, galaxies and clusters at 714 mm, with a matched flattener for wide sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar and planetary observing:\u003c\/strong\u003e high-contrast, colour-true views up to 204x.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual deep-sky observing:\u003c\/strong\u003e 2″ wide-field eyepieces on the 2″ focuser.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble stars:\u003c\/strong\u003e 1.17 arc-second resolution for close pairs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus:\u003c\/strong\u003e SVBONY's specification table lists 101.9 mm; its description text quotes 90 mm. If you are spacing a corrector and camera, send us your setup and we will work out the figure with you.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccessories:\u003c\/strong\u003e 2″ accessories fit directly; 1.25″ eyepieces use the included adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging upgrades:\u003c\/strong\u003e SVBONY pairs the SV503 102 with its SV209 flattener and with deep-sky imaging trains; the add-on options on this page cover those pairings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e rings and a 200 mm dovetail. At 5.7 kg with rings, plan on a mid-size equatorial mount for imaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385864044467581197896811.jpg?v=1791670166\" alt=\"SVBONY SV503 102 compatible with 1.25 and 2 inch adapters\" 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\/6386597217573448576905193.jpg?v=1791670166\" alt=\"SVBONY SV503 102 OTA rings with dovetail\" 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\/F9359D2_20260116102029_3372.webp?v=1791670166\" alt=\"SVBONY SV503 102 ED refractor OTA detail panel\" 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\u003cp\u003eSVBONY's key features list for the OTA style:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSV503 102 f\/7 ED OTA with rings and 200 mm dovetail\u003c\/li\u003e\n\u003cli\u003e2″ to 1.25″ adapter\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\u003eOptical tube only:\u003c\/strong\u003e no mount, diagonal, eyepiece or corrector is included. SVBONY also offers OTA-FR and OTA-FR-Handle styles; ask us if you would like one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat field:\u003c\/strong\u003e as with any doublet, a matched flattener gives the flattest corners on larger sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 5.7 kg with rings, plus camera or diagonal, is worth accounting for in your mount payload.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDew:\u003c\/strong\u003e the retractable hood helps, and a dew heater keeps the objective clear on humid nights.\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 rings and dovetail drop into the mount saddle, and the focuser takes 2″ or 1.25″ accessories. A refractor needs no collimation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it for imaging or visual?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBoth. SVBONY designs the SV503 102 for astrophotography and deep-sky stargazing, and it performs well visually on the Moon and planets.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat ED glass does it use?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eS-FPL51, in a doublet with SMC coatings.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a flattener?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor visual use, no. For imaging on larger sensors, a matched flattener such as the SVBONY SV209 gives flatter corners.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow heavy is it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e5.7 kg with rings, per SVBONY.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 102 mm f\/7 S-FPL51 ED doublet with a 2″ dual-speed focuser, rings and a 200 mm dovetail, for colour-true visual observing and deep-sky imaging. Add a mount, and a flattener and camera for imaging.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"OTA","offer_id":67722413473903,"sku":"F9359D","price":748.13,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9359d-1_20251124084750_2001.webp?v=1791670990"}],"url":"https:\/\/ontariotelescope.com\/collections\/refractors-svbony.oembed","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}