{"title":"SVBONY Plössl \u0026 Flat-Field Eyepieces","description":"\u003cp\u003eSVBONY's standard-field eyepieces here are the 1.25-inch Plössls (the SV131 32mm and the FMC 25mm and 40mm) and the SV190 Ultra Flat Field eyepieces in 10mm and 18mm. Part of \u003ca href=\"\/collections\/plossl-and-orthoscopic-eyepieces\"\u003ePlössl \u0026amp; Standard-Field Eyepieces\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"svbony-sv131-32mm-plossl-eyepiece","title":"SVBONY SV131 1.25″ 32mm Plossl Eyepiece","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6373092571815565327658865.jpg?v=1791669868\" alt=\"SVBONY SV131 32mm Plossl eyepiece key visual\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe SVBONY SV131 32 mm is a 1.25″ Plössl eyepiece with a 48° apparent field of view, 19 mm of eye relief and a 25 mm field stop. It uses a fully multi-coated 2-group, 4-element design with matte-blackened lens edges, a metal body with a rubber non-slip ring and folding rubber eyecup, and an M28.5 × 0.6 thread for 1.25″ filters. It measures Ø61 × 104 mm and weighs 116.5 g.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6373092573103769315691428.jpg?v=1791669868\" alt=\"SVBONY SV131 32mm Plossl eyepiece optical coatings\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if your telescope has a 1.25″ focuser and you want a low-power eyepiece with the widest true field that size allows — for finding objects, sweeping star fields and framing clusters, nebulae and comets. The 19 mm eye relief works for observers who wear glasses.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e32 mm focal length, 48° field:\u003c\/strong\u003e low power and a 25 mm field stop.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e19 mm eye relief:\u003c\/strong\u003e comfortable for long sessions, with or without glasses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully multi-coated Plössl:\u003c\/strong\u003e 2 groups, 4 elements, with blackened edges to suppress stray light.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFolding rubber eyecup and non-slip ring.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM28.5 × 0.6 filter thread:\u003c\/strong\u003e takes SVBONY and other standard 1.25″ filters.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6373092574596922109615991.jpg?v=1791669868\" alt=\"SVBONY SV131 32mm Plossl eyepiece filter thread and barrel\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinding and framing:\u003c\/strong\u003e locate targets at low power before switching up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen clusters and star fields:\u003c\/strong\u003e the Pleiades, the Beehive and Milky Way sweeping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNebulae and comets:\u003c\/strong\u003e brighter, lower-power views of extended objects.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/w9101a-1_20250807091309_6359.jpg?v=1791670289\" alt=\"SVBONY SV131 32mm Plossl eyepiece with rubber eyecup for star cluster and nebula viewing\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel:\u003c\/strong\u003e 1.25″, for standard 1.25″ focusers and diagonals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilters:\u003c\/strong\u003e M28.5 × 0.6 thread for 1.25″ filters and adapter rings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnification:\u003c\/strong\u003e divide your telescope's focal length by 32 — for example about 22× on a 700 mm refractor.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6373092575802240234012940.jpg?v=1791669868\" alt=\"SVBONY SV131 32mm Plossl eyepiece eyecup and grip\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e48° field:\u003c\/strong\u003e a classic Plössl field, narrower than wide-angle designs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExit pupil:\u003c\/strong\u003e on fast telescopes a 32 mm eyepiece gives a large exit pupil, which suits dark skies and younger eyes best.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It slides into any 1.25″ focuser or diagonal and is held by the set screw or compression ring.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it with glasses?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. The 19 mm eye relief and folding rubber eyecup are designed for use with or without glasses.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it take filters?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. The barrel is threaded M28.5 × 0.6 for 1.25″ filters.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy choose a 32 mm Plössl?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIn a 1.25″ barrel, a 32 mm Plössl gives close to the widest true field available, which makes it the natural finding and low-power eyepiece.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 116.5 g, fully multi-coated 1.25″ 32 mm Plössl with a 48° field and 19 mm eye relief — a low-power finding and wide-field eyepiece.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"Default Title","offer_id":67722264346735,"sku":"W9101A","price":34.2,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/w9101a_20250807091309_4254_20260814161322_4170.webp?v=1791670288"},{"product_id":"svbony-sv190-10mm-ultra-flat-field-eyepiece","title":"SVBONY SV190 10mm 1.25″ Ultra Flat Field Eyepiece","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6387037183457111308977863.jpg?v=1791669917\" alt=\"SVBONY SV190 10mm ultra flat field eyepiece key visual\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe SVBONY SV190 10 mm is a 1.25″ ultra flat field eyepiece with a 60° apparent field of view. Its 5-element, 4-group fully multi-coated design flattens field curvature toward the edge, so stars stay sharp across more of the view than in a simple Plössl. Eye relief is 16 mm, the field stop is 14.7 mm, and the barrel carries a standard M28.5×0.6 filter thread. It weighs 84 g.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/w9149a-1_20250806175207_4553.jpg?v=1791670369\" alt=\"SVBONY SV190 10mm 1.25 inch ultra flat field eyepiece\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you want a medium-high power eyepiece for the Moon, planets, double stars and smaller deep-sky objects, with a flatter field and more eye relief than a 10 mm Plössl, including if you observe with glasses.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra flat field:\u003c\/strong\u003e designed to reduce edge curvature and distortion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e60° apparent field\u003c\/strong\u003e at 10 mm focal length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e16 mm eye relief\u003c\/strong\u003e with a rubber eyecup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 elements in 4 groups\u003c\/strong\u003e, fully multi-coated, with oversized lenses and blackened lens edges.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminium body\u003c\/strong\u003e with a filter-threaded 1.25″ barrel.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6387037657636926234414168.jpg?v=1791669917\" alt=\"SVBONY SV190 10mm flat field eyepiece optical design panel\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe five-element layout uses oversized lenses and a field-flattening group so that the image stays in focus closer to the field stop. With a 14.7 mm field stop and 60° apparent field, the true field in your telescope is the 60° divided by the magnification (telescope focal length ÷ 10 mm). Broadband multi-coatings on all air-glass surfaces keep transmission and contrast up on bright targets.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar and planetary observing\u003c\/strong\u003e at medium-high magnification.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDouble stars and globular clusters.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall deep-sky objects\u003c\/strong\u003e such as planetary nebulae.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/w9149a-2_20250806175207_4585.jpg?v=1791670369\" alt=\"SVBONY SV190 10mm eyepiece barrel and eyecup\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel:\u003c\/strong\u003e 1.25″, fits 1.25″ focusers, diagonals and 2″-to-1.25″ adapters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter thread:\u003c\/strong\u003e M28.5×0.6 for standard 1.25″ filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread under the eyecup:\u003c\/strong\u003e M34×0.75.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompanion focal length:\u003c\/strong\u003e SVBONY makes the SV190 in 18 mm as well (65°, 20 mm eye relief).\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6387056114060839864413406.jpg?v=1791669917\" alt=\"SVBONY SV190 10mm flat field eyepiece threads and eyecup detail\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEye relief figure:\u003c\/strong\u003e SVBONY's specification table lists 16 mm; its description text mentions 10 mm. We list the table figure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25″ only:\u003c\/strong\u003e no 2″ skirt.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNet weight 84 g\u003c\/strong\u003e; package size 110 × 76 × 70 mm.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It drops into any 1.25″ focuser or diagonal and is held by the thumbscrew.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the apparent field?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e60°.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use filters with it?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. The barrel takes standard M28.5×0.6 1.25″ filters.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it with glasses?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSVBONY describes the eye relief as suitable for eyeglass wearers; the published figure is 16 mm.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 10 mm, 60° flat field 1.25″ eyepiece with 5-element FMC optics and 16 mm eye relief, for sharp medium-high power views of the Moon, planets and compact deep-sky objects.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"Default Title","offer_id":67722281287791,"sku":"W9149A","price":61.55,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/w9149a-0_20251231154154_6726.webp?v=1791670369"},{"product_id":"svbony-sv190-18mm-ultra-flat-field-eyepiece","title":"SVBONY SV190 18mm 1.25″ Ultra Flat Field Eyepiece","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6387037921880978879594769.jpg?v=1791669920\" alt=\"SVBONY SV190 18mm ultra flat field eyepiece key visual\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe SVBONY SV190 18 mm is a 1.25″ ultra flat field eyepiece with a 65° apparent field of view and 20 mm of eye relief. Its 8-element, 5-group fully multi-coated design keeps stars sharp from the centre to the edge, and its 23.4 mm field stop gives a wider view than typical Plössl eyepieces. The barrel takes standard M28.5×0.6 filters, and an M42×0.75 thread under the eyecup allows a camera to be attached for eyepiece projection.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1_20260314115625_9018.webp?v=1791670383\" alt=\"SVBONY SV190 18mm 1.25 inch ultra flat field eyepiece\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you want a low-to-medium power 1.25″ eyepiece with a wide, flat field for deep-sky scanning, the full lunar disc and wide double stars, with eye relief comfortable enough for glasses.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e65° apparent field\u003c\/strong\u003e at 18 mm, wider than a standard Plössl.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 mm eye relief\u003c\/strong\u003e with a rubber eyecup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8 elements in 5 groups\u003c\/strong\u003e, fully multi-coated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat field:\u003c\/strong\u003e sharp from centre to edge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM42×0.75 thread under the eyecup\u003c\/strong\u003e for camera connection.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eLightweight, durable build.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6387031149088578093963209.jpg?v=1791669920\" alt=\"SVBONY SV190 18mm flat field eyepiece 65 degree field feature panel\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe eight-element layout includes a field-flattening group, which is what keeps stars in focus out to the 23.4 mm field stop. At 18 mm and 65°, the true field in your telescope is 65° divided by the magnification (telescope focal length ÷ 18 mm), so it frames large clusters and nebulae that a narrower eyepiece crops.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep-sky observing:\u003c\/strong\u003e open clusters, larger nebulae and galaxies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhole-Moon views\u003c\/strong\u003e at moderate power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfocal or projection photography\u003c\/strong\u003e via the M42 thread under the eyecup; SVBONY notes it can be matched with the SV406P for scenery.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6387031149122166355245243.jpg?v=1791669920\" alt=\"SVBONY SV190 18mm flat field eyepiece M42 camera thread detail\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel:\u003c\/strong\u003e 1.25″ for 1.25″ focusers, diagonals and 2″-to-1.25″ adapters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter thread:\u003c\/strong\u003e M28.5×0.6.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamera thread:\u003c\/strong\u003e M42×0.75 under the eyecup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompanion focal length:\u003c\/strong\u003e SVBONY makes the SV190 in 10 mm as well (60°).\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/w9149b-2_20250806174238_1172.jpg?v=1791670383\" alt=\"SVBONY SV190 18mm eyepiece barrel and threads\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/2_20260314115626_0052.webp?v=1791670383\" alt=\"SVBONY SV190 18mm flat field eyepiece detail\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25″ only:\u003c\/strong\u003e no 2″ skirt.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e SVBONY does not publish a weight for the 18 mm.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It slides into any 1.25″ focuser or diagonal and is held by the thumbscrew.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I attach a camera?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. Remove the eyecup to reach the M42×0.75 thread.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow wide is the view?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e65° apparent field with a 23.4 mm field stop.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it good with glasses?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSVBONY describes the 20 mm eye relief as comfortable for eyeglass wearers.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: an 18 mm, 65° flat field 1.25″ eyepiece with 8-element FMC optics, 20 mm eye relief and an M42 camera thread, for wide, sharp deep-sky and lunar views.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"Default Title","offer_id":67722284728431,"sku":"W9149B","price":95.29,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/w9149b-0_20251231154451_0679.webp?v=1791670383"},{"product_id":"svbony-f9149a-25mm-plossl-eyepiece","title":"SVBONY 25mm Plossl Eyepiece 1.25″ FMC","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6371496238243620362446199.jpg?v=1791669969\" alt=\"SVBONY F9149A 25mm Plossl eyepiece overview\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe SVBONY F9149A is a 25 mm, 1.25″ Plössl eyepiece. It uses a four-element symmetrical Plössl design in two groups, fully multi-coated, with blackened lens edges and an internally blackened barrel for contrast. It gives a 40° apparent field, accepts standard 1.25″ filters on its M28.5 x 0.6 thread, has a rubber eye guard, stands 72 mm (2.82″) tall and weighs 79 g (2.8 oz). It ships in a protective plastic case.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9149a-1_20250807112316_0136_20260820165408_4446.webp?v=1791670543\" alt=\"SVBONY F9149A 25mm 1.25″ Plossl eyepiece\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you want a dependable medium-low-power eyepiece for a 1.25″ focuser, for general observing of the Moon, planets, double stars and brighter deep-sky objects.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-element Plössl, 2 groups:\u003c\/strong\u003e a symmetrical design known for sharp, well-corrected images.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully multi-coated optics:\u003c\/strong\u003e improve light transmission and reduce reflections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlackened lens edges and barrel interior:\u003c\/strong\u003e cut stray light for better contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25″ filter thread (M28.5 x 0.6):\u003c\/strong\u003e takes standard 1.25″ filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRubber eye guard:\u003c\/strong\u003e blocks side light and helps position your eye.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6371496238244682848180460.jpg?v=1791669969\" alt=\"SVBONY F9149A 25mm Plossl eyepiece fully multi-coated optics\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6371496238251248792246366.jpg?v=1791669969\" alt=\"SVBONY F9149A 25mm Plossl eyepiece blackened barrel and filter thread\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneral observing:\u003c\/strong\u003e 25 mm gives moderate magnification, 40x on a 1000 mm telescope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar and planetary overviews\u003c\/strong\u003e and binary stars.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrighter clusters and nebulae\u003c\/strong\u003e at modest power.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel:\u003c\/strong\u003e 1.25″, for any 1.25″ focuser or diagonal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilters:\u003c\/strong\u003e standard 1.25″ filters thread into the barrel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarlow:\u003c\/strong\u003e works with a 1.25″ Barlow for higher power.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eWhat's in the Box\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eSVBONY 25 mm Plössl eyepiece, packed in a protective plastic case\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6371496241136305759271047.jpg?v=1791669969\" alt=\"SVBONY F9149A 25mm Plossl eyepiece protective case\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eField of view:\u003c\/strong\u003e 40° apparent; for a wider view at a similar focal length, a wide-angle design is the alternative.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25″ only:\u003c\/strong\u003e it does not fit 2″-only focusers without an adapter.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. Slide it into the focuser or diagonal, tighten the thumbscrew and focus.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat magnification will it give?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYour telescope's focal length divided by 25. For example, 40x on a 1000 mm telescope or 26x on a 650 mm one.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I add filters?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. The barrel takes standard 1.25″ filters on its M28.5 x 0.6 thread.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 79 g, fully multi-coated 25 mm 1.25″ Plössl with a 40° field and filter thread, for everyday observing at moderate power.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"Default Title","offer_id":67722323296367,"sku":"F9149A","price":22.73,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9149a-1_20250807112316_0136_20260820165408_4446.webp?v=1791670543"},{"product_id":"svbony-f9122a-40mm-plossl-eyepiece","title":"SVBONY 40mm Plossl Eyepiece 1.25″ FMC","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6371470598933173055285636.jpg?v=1791669969\" alt=\"SVBONY F9122A 40mm Plossl 1.25″ eyepiece overview\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe SVBONY F9122A is a 40 mm, 1.25″ Plössl eyepiece in an all-metal body. It uses a fully multi-coated four-element design in two groups with blackened lens edges and internal threading to cut reflections, and has a rubber eyecup and an M28.5 x 0.6 filter thread. SVBONY's specification table lists a 40° apparent field. It is 79 mm (3.11″) tall and weighs 82 g (2.9 oz).\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9122a-1_20250807112545_1485_20260820165308_5947.webp?v=1791670628\" alt=\"SVBONY F9122A 40mm 1.25″ Plossl eyepiece\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you want the lowest practical power for a 1.25″ focuser: an eyepiece for finding objects, framing the whole Moon and sweeping star fields and larger deep-sky objects.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e40 mm focal length:\u003c\/strong\u003e low magnification and the widest true field a 1.25″ barrel allows in this design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully multi-coated optics, 2 groups \/ 4 elements:\u003c\/strong\u003e for brightness and contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlackened lens edges and internal threading:\u003c\/strong\u003e reduce stray reflections.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAll-metal body with rubber eyecup.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM28.5 x 0.6 filter thread:\u003c\/strong\u003e takes standard 1.25″ filters.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinding and centring objects\u003c\/strong\u003e before switching to higher power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhole-disc lunar views\u003c\/strong\u003e and wide star fields.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge deep-sky objects\u003c\/strong\u003e such as open clusters and extended nebulae.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eOn a 1000 mm telescope it gives 25x; on a 650 mm telescope, about 16x.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel:\u003c\/strong\u003e 1.25″, for any 1.25″ focuser or diagonal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilters:\u003c\/strong\u003e standard 1.25″ filters thread into the barrel.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9122a-2_20250807112545_2193.jpg?v=1791670629\" alt=\"SVBONY F9122A 40mm Plossl eyepiece filter thread\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExit pupil on fast telescopes:\u003c\/strong\u003e a 40 mm eyepiece on an f\/8 or faster telescope produces a large exit pupil (5 mm at f\/8), which suits dark-adapted eyes; on very fast scopes some light may fall outside the pupil.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEye relief:\u003c\/strong\u003e long-focal-length Plössls have generous eye relief, so the rubber eyecup helps you find the right eye position.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. Slide it into the focuser or diagonal, tighten the thumbscrew and focus.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat magnification will it give?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYour telescope's focal length divided by 40, for example 25x on a 1000 mm telescope.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I add filters?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. It has an M28.5 x 0.6 thread for standard 1.25″ filters.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: an 82 g all-metal, fully multi-coated 40 mm 1.25″ Plössl for the lowest power and widest view in a 1.25″ focuser.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"Default Title","offer_id":67722342793327,"sku":"F9122A","price":24.23,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9122a-1_20250807112545_1485_20260820165308_5947.webp?v=1791670628"}],"url":"https:\/\/ontariotelescope.com\/collections\/plossl-and-orthoscopic-eyepieces-svbony.oembed","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}