{"product_id":"svbony-sv226p-filter-drawer-for-oag","title":"SVBONY SV226P M42 Filter Drawer for SV238 OAG (1.25″ and 2″)","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe SVBONY SV226P is a filter drawer designed to bolt directly to the SV238 off-axis guider. One drawer holds either a 1.25″ or a 2″ filter, held by H-type magnets and a side-locking screw that also seals against light leaks. It is machined in one piece from aluminium, is 21 mm thick, has an M42 camera-side thread, and includes an M42-to-M48 adapter. Twelve M2.5 threaded points attach it rigidly to the OAG.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/9_20260129115803_4154.webp?v=1791651293\" alt=\"SVBONY SV226P filter drawer specifications: thickness, threads, material and filter sizes\" 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 are building an imaging train around the SVBONY SV238 OAG and want to swap filters quickly without removing the camera, whether you image in broadband or narrowband.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25″ and 2″ in one drawer:\u003c\/strong\u003e no extra holders needed when you change filter size.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual retention:\u003c\/strong\u003e H-type magnets plus a side-lock screw that keeps the drawer seated and light-tight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12 M2.5 mounting points:\u003c\/strong\u003e a rigid connection to the SV238, keeping the guide-camera relationship stable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e21 mm thickness, M42 camera side:\u003c\/strong\u003e with an included M42-to-M48 adapter, and M28.5 support for 1.25″ filters.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOne-piece CNC aluminium body.\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\/6_20260129115747_1597.webp?v=1791651294\" alt=\"SVBONY SV226P filter drawer with included M42 to M48 adapter\" 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\u003eNarrowband and broadband deep-sky imaging\u003c\/strong\u003e with quick filter changes behind an OAG.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact OAG imaging trains\u003c\/strong\u003e on refractors and Maksutovs, including the SVBONY MK127 with its reducer.\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\u003eDesigned for:\u003c\/strong\u003e the SVBONY SV238 off-axis guider.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamera side:\u003c\/strong\u003e native M42 female thread; M42-to-M48 adapter included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackfocus:\u003c\/strong\u003e 21 mm. In SVBONY's example, a camera with 17.5 mm of flange depth, the SV226P and the SV238 with its M48 adapter total 55 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSV226P vs SV226:\u003c\/strong\u003e the SV226P has the mounting holes needed to bolt to the SV238. The plain SV226 M42 drawer cannot attach to the OAG.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/7_20260129115753_9528.webp?v=1791651293\" alt=\"SVBONY SV226P filter drawer installation with SV238 off-axis guider and camera\" 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\/8_20260129115758_7792.webp?v=1791651293\" alt=\"SVBONY SV226P filter drawer dimensional drawing in millimetres\" 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\/10_20260129115809_1053.webp?v=1791651293\" alt=\"SVBONY SV226P versus SV226 filter drawer comparison chart\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003cp\u003eIf you are combining the SV226P with a different camera or corrector, send us your setup and we will confirm the spacing with you.\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\u003eMade for the SV238:\u003c\/strong\u003e its mounting pattern matches that OAG. For a drawer without an OAG, the standard SV226 is the alternative.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFilters sold separately.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging only:\u003c\/strong\u003e it has no application in a visual train.\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 bolts to the camera side of the SV238 with the M2.5 screws supplied with the OAG, and the camera threads onto its M42 side.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use 1.25″ and 2″ filters?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. The same drawer accepts either size.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow thick is it?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e21 mm, which is the figure to include in your backfocus total.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 21 mm, one-piece aluminium filter drawer that bolts to the SVBONY SV238 OAG, takes 1.25″ or 2″ filters, and keeps an OAG imaging train compact and light-tight.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"Default Title","offer_id":67720872460399,"sku":"W9184D","price":76.94,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1_20260129115627_2332.webp?v=1791651565","url":"https:\/\/ontariotelescope.com\/products\/svbony-sv226p-filter-drawer-for-oag","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}