{"title":"Starfield Optics Focusers","description":"","products":[{"product_id":"starfield-newtonian-focuser-r-p-2","title":"Starfield Optics 2\" Newtonian focuser R\u0026P","description":"\u003cp\u003eWhen your Newtonian’s stock focuser starts to feel like the weak link—especially with a heavier camera train—this Starfield Optics \u003cstrong data-start=\"215\" data-end=\"237\"\u003e2\" rack-and-pinion\u003c\/strong\u003e upgrade is built to add \u003cstrong data-start=\"262\" data-end=\"307\"\u003erigidity, repeatability, and fine control\u003c\/strong\u003e. The R\u0026amp;P drive gives a more positive, “geared” feel than many friction-based designs, and the dual-speed controls make it easy to land on tight focus without hunting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong data-start=\"560\" data-end=\"609\"\u003eGeared focusing designed for heavier payloads\u003c\/strong\u003e\u003cbr data-start=\"609\" data-end=\"612\"\u003eRack-and-pinion focusers are often chosen when you’re hanging more weight off the back of a Newtonian and want a focusing system that stays consistent through the night. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong data-start=\"919\" data-end=\"963\"\u003eDual-speed focusing (coarse + 10:1 fine)\u003c\/strong\u003e\u003cbr data-start=\"963\" data-end=\"966\"\u003eDial in focus quickly with the main knob, then “creep” into perfect focus using the microfocus control. A drawtube lock is included for holding position once you’ve set focus.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong data-start=\"1181\" data-end=\"1217\"\u003e50 mm of travel + drawtube scale\u003c\/strong\u003e\u003cbr data-start=\"1217\" data-end=\"1220\"\u003eYou get about \u003cstrong data-start=\"1234\" data-end=\"1249\"\u003e50 mm (~2\")\u003c\/strong\u003e of drawtube travel and a \u003cstrong data-start=\"1275\" data-end=\"1297\"\u003elaser-marked scale\u003c\/strong\u003e to help you return to known focus positions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong data-start=\"1382\" data-end=\"1423\"\u003eZWO EAF mounting made straightforward\u003c\/strong\u003e\u003cbr data-start=\"1423\" data-end=\"1426\"\u003eThis version is listed as \u003cstrong data-start=\"1452\" data-end=\"1485\"\u003eEAF compatible out of the box\u003c\/strong\u003e, using the standard EAF bracket, and includes a coupler (noting it’s 5 mm and may need adjustment depending on EAF generation).\u003c\/p\u003e\n\u003ch3 data-section-id=\"1r2oexi\" data-start=\"2347\" data-end=\"2370\"\u003eIncluded \/ features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2\" focuser body with \u003cstrong data-start=\"2403\" data-end=\"2423\"\u003edual-speed knobs\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-size: 0.875rem;\" data-start=\"2466\" data-end=\"2489\"\u003e2\" compression ring\u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e eyepiece holder + \u003c\/span\u003e\u003cstrong style=\"font-size: 0.875rem;\" data-start=\"2508\" data-end=\"2531\"\u003e2\" to 1.25\" adapter\u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e (with filter threads on the adapter)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\u003cstrong data-start=\"2611\" data-end=\"2630\"\u003e1.25\" dust plug\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eShips in a foam-fitted padded box; \u003cstrong data-start=\"2708\" data-end=\"2721\"\u003eno manual\u003c\/strong\u003e, and \u003cstrong data-start=\"2727\" data-end=\"2782\"\u003emounting screws for the base plate are not included\u003c\/strong\u003e\u003cstrong data-start=\"2727\" data-end=\"2782\"\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-end=\"3070\" data-start=\"3037\" data-section-id=\"8vyv96\"\u003eQuick specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMin height (no 1.25\" adapter): 79.0 mm (drawtube may extend ~32 mm below the curved plate at minimum height)\u003c\/li\u003e\n\u003cli\u003eMax height (no 1.25\" adapter): 129.0 mm\u003c\/li\u003e\n\u003cli\u003eTravel: 50 mm\u003c\/li\u003e\n\u003cli\u003eDrawtube OD: 59 mm (tube cutout must exceed this)\u003c\/li\u003e\n\u003cli\u003eWeight (with 1.25\" adapter): 860 g\u003c\/li\u003e\n\u003cli\u003eMax body OD: 82 mm\u003c\/li\u003e\n\u003cli\u003eBase plate curve diameter: 230mm (shims required if greater thank 230mm)\u003c\/li\u003e\n\u003cli\u003eBase plate dimensions: 90mm x 90mm\u003c\/li\u003e\n\u003cli\u003eHole Spacing optical axis: 70mm \u003c\/li\u003e\n\u003cli\u003eHole Spacing perpendicular to telescope tube: 73mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInside diameter of central hole: 78mm\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMounting hole specification: Unthreaded inside diameter of 4.9mm\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Starfield","offers":[{"title":"Default Title","offer_id":44554053812335,"sku":"SF-NWFOC2","price":394.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/IMG_4019.jpg?v=1771711799"},{"product_id":"starfield-optics-2-richey-chretien-r-p-focuser-eaf-compatable","title":"Starfield Optics 2\" Richey-Chretien R\u0026P focuser .  EAF Compatable","description":"\u003ch2 data-end=\"85\" data-start=\"0\" data-section-id=\"1enlynv\"\u003e2\" Linear-Bearing Crayford Focuser (ZWO EAF Mount-Ready) for 6\" \u0026amp; 8\" GSO RC\/CC\u003c\/h2\u003e\n\u003cp data-end=\"526\" data-start=\"87\"\u003eIf you’re upgrading the stock focuser on a GSO 6\" or 8\" Ritchey-Chrétien (or Classical Cassegrain) and you want smoother motion, better load handling, and straightforward motor-focuser mounting, this dual-speed linear-bearing Crayford is built for exactly that. It combines a rigid rail-guided drawtube with fine 10:1 control—great for heavy eyepieces or imaging trains where repeatable focus matters.\u003c\/p\u003e\n\u003ch3 data-end=\"560\" data-start=\"533\" data-section-id=\"16fwv6t\"\u003eWhat makes it different\u003c\/h3\u003e\n\u003cp data-end=\"971\" data-start=\"562\"\u003e\u003cstrong data-end=\"614\" data-start=\"562\"\u003eRail-guided stability (less tilt, less “wiggle”)\u003c\/strong\u003e\u003cbr data-end=\"617\" data-start=\"614\"\u003eInstead of relying only on the typical small roller contact points found in many Crayfords, this design uses a stainless linear-rail system that keeps the drawtube supported across its travel for improved rigidity—especially helpful when the scope is aimed low and the imaging payload is working the focuser hardest. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"1316\" data-start=\"973\"\u003e\u003cstrong data-end=\"1014\" data-start=\"973\"\u003eDual-speed control for critical focus\u003c\/strong\u003e\u003cbr data-end=\"1017\" data-start=\"1014\"\u003eYou get a standard coarse knob plus a \u003cstrong data-end=\"1074\" data-start=\"1055\"\u003e10:1 microfocus\u003c\/strong\u003e for tiny adjustments when stars are almost “there” but not quite. There’s also a \u003cstrong data-end=\"1173\" data-start=\"1156\"\u003edrawtube lock\u003c\/strong\u003e for holding focus once you’ve nailed it, and \u003cstrong data-end=\"1241\" data-start=\"1219\"\u003etension adjustment\u003c\/strong\u003e to match the weight you’re carrying. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"1645\" data-start=\"1318\"\u003e\u003cstrong data-end=\"1375\" data-start=\"1318\"\u003eZWO EAF-friendly housing (no custom bracket required)\u003c\/strong\u003e\u003cbr data-end=\"1378\" data-start=\"1375\"\u003eThis version is designed with a flat mounting surface and extra mounting points so a \u003cstrong data-end=\"1474\" data-start=\"1463\"\u003eZWO EAF\u003c\/strong\u003e can be attached using the \u003cstrong data-end=\"1545\" data-start=\"1501\"\u003estandard bracket that comes with the EAF\u003c\/strong\u003e—no third-party printed adapters needed. \u003cem data-end=\"1607\" data-start=\"1586\"\u003e(EAF not included.)\u003c\/em\u003e \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"1851\" data-start=\"1647\"\u003e\u003cstrong data-end=\"1693\" data-start=\"1647\"\u003eRotation for comfortable framing\/observing\u003c\/strong\u003e\u003cbr data-end=\"1696\" data-start=\"1693\"\u003eLoosen the rotation collar, turn the focuser to a better angle for viewing or camera framing, then lock it back down. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-end=\"1856\" data-start=\"1853\"\u003e\n\u003ch3 data-end=\"1879\" data-start=\"1858\" data-section-id=\"yvefr1\"\u003eTelescope fitment\u003c\/h3\u003e\n\u003cul data-end=\"2191\" data-start=\"1881\"\u003e\n\u003cli data-end=\"2057\" data-start=\"1881\" data-section-id=\"1cuoz63\"\u003e\n\u003cp data-end=\"2057\" data-start=\"1883\"\u003eThreads directly onto compatible \u003cstrong data-end=\"1960\" data-start=\"1916\"\u003eGSO-manufactured (Astro-tech, iOptron, Orion, etc...) 6\" and 8\" RC telescopes\u003c\/strong\u003e using the \u003cstrong data-end=\"1987\" data-start=\"1971\"\u003eM90x1 female\u003c\/strong\u003e thread on the telescope side.  \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2191\" data-start=\"2058\" data-section-id=\"j5zqe3\"\u003e\n\u003cp data-end=\"2191\" data-start=\"2060\"\u003eOften found under multiple brand labels (the underlying GSO rear-thread standard is the key). \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"2196\" data-start=\"2193\"\u003e\n\u003ch3 data-end=\"2223\" data-start=\"2198\" data-section-id=\"enxvqd\"\u003eIn the box \/ features\u003c\/h3\u003e\n\u003cul data-end=\"2645\" data-start=\"2225\"\u003e\n\u003cli data-end=\"2317\" data-start=\"2225\" data-section-id=\"17tci3n\"\u003e\n\u003cp data-end=\"2317\" data-start=\"2227\"\u003e2\" eyepiece barrel with \u003cstrong data-end=\"2277\" data-start=\"2251\"\u003ebrass compression ring\u003c\/strong\u003e \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2442\" data-start=\"2318\" data-section-id=\"13alxru\"\u003e\n\u003cp data-end=\"2442\" data-start=\"2320\"\u003e\u003cstrong data-end=\"2343\" data-start=\"2320\"\u003e2\" to 1.25\" adapter\u003c\/strong\u003e (with brass ring) and \u003cstrong data-end=\"2387\" data-start=\"2366\"\u003e2\" filter threads\u003c\/strong\u003e on the adapter \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2543\" data-start=\"2443\" data-section-id=\"puch0k\"\u003e\n\u003cp data-end=\"2543\" data-start=\"2445\"\u003e\u003cstrong data-end=\"2476\" data-start=\"2445\"\u003eLaser-marked drawtube scale\u003c\/strong\u003e for repeatable positioning \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2645\" data-start=\"2544\" data-section-id=\"1iifhsu\"\u003e\n\u003cp data-end=\"2645\" data-start=\"2546\"\u003ePackaged in a foam-fitted padded box; \u003cstrong data-end=\"2605\" data-start=\"2584\"\u003eno printed manual\u003c\/strong\u003e \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"2650\" data-start=\"2647\"\u003e\n\u003ch3 data-end=\"2711\" data-start=\"2652\" data-section-id=\"1gxe09z\"\u003eFocus travel note (important for eyepieces\/accessories)\u003c\/h3\u003e\n\u003cp data-end=\"3022\" data-start=\"2713\"\u003eCrayford units are often \u003cstrong data-end=\"2749\" data-start=\"2738\"\u003eshorter\u003c\/strong\u003e than some rack-and-pinion focusers. That usually \u003cem data-end=\"2806\" data-start=\"2799\"\u003ehelps\u003c\/em\u003e with gaining in-focus (nice for imaging\/binoviewers), but if you run out of \u003cstrong data-end=\"2896\" data-start=\"2883\"\u003eout-focus\u003c\/strong\u003e with certain eyepieces\/accessories, the common fix is adding a \u003cstrong data-end=\"2981\" data-start=\"2960\"\u003e2\" extension tube\u003c\/strong\u003e. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"526\" data-start=\"87\"\u003e \u003c\/p\u003e","brand":"Starfield","offers":[{"title":"Default Title","offer_id":44554055385199,"sku":"SF-RCFOC2","price":394.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/IMG_4022.jpg?v=1771711962"},{"product_id":"starfield-optics-3-dual-speed-rack-and-pinion-focuser-for-rc-telescopes-m117","title":"Starfield Optics 3\" Dual-Speed Rack-and-Pinion Focuser for RC Telescopes (M117)","description":"\u003cp data-start=\"115\" data-end=\"728\"\u003eIf you’re running a larger RC (or similar back end that uses the \u003cstrong data-start=\"180\" data-end=\"188\"\u003eM117\u003c\/strong\u003e standard) and you want a focuser that stays put under real imaging weight, this \u003cstrong data-start=\"269\" data-end=\"291\"\u003e3\" rack-and-pinion\u003c\/strong\u003e upgrade is built for exactly that job. The key advantage of this design is that the \u003cstrong data-start=\"376\" data-end=\"433\"\u003edrawtube support and the focusing drive are separated\u003c\/strong\u003e—so the tube rides on low-friction bearing surfaces while the gear train provides the movement. The result is a focuser that remains stable with heavy cameras, filter wheels, and reducers without the “give” you can sometimes see in lighter Crayford designs. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"730\" data-end=\"733\"\u003e\n\u003ch3 data-section-id=\"5p2je8\" data-start=\"735\" data-end=\"784\"\u003eWhy this focuser is a serious imaging upgrade\u003c\/h3\u003e\n\u003cp data-start=\"786\" data-end=\"1101\"\u003e\u003cstrong data-start=\"786\" data-end=\"827\"\u003eGeared drive with high load stability\u003c\/strong\u003e\u003cbr data-start=\"827\" data-end=\"830\"\u003eInstead of relying on friction pressure to hold position, the \u003cstrong data-start=\"892\" data-end=\"911\"\u003erack-and-pinion\u003c\/strong\u003e drive provides positive, repeatable movement and strong holding power—useful when you’re hanging a substantial imaging train off the back of the scope. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1103\" data-end=\"1309\"\u003e\u003cstrong data-start=\"1103\" data-end=\"1143\"\u003eDual-speed control (10:1 microfocus)\u003c\/strong\u003e\u003cbr data-start=\"1143\" data-end=\"1146\"\u003eFast coarse focusing gets you close, and the \u003cstrong data-start=\"1191\" data-end=\"1209\"\u003e10:1 reduction\u003c\/strong\u003e makes it easy to land on critical focus without overshooting. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1311\" data-end=\"1519\"\u003e\u003cstrong data-start=\"1311\" data-end=\"1340\"\u003eRotation for easy framing\u003c\/strong\u003e\u003cbr data-start=\"1340\" data-end=\"1343\"\u003eThe included adapter assembly supports \u003cstrong data-start=\"1382\" data-end=\"1399\"\u003efull rotation\u003c\/strong\u003e so you can square up a camera or reframe without fighting your mount orientation. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1521\" data-end=\"1784\"\u003e\u003cstrong data-start=\"1521\" data-end=\"1562\"\u003eBig clear aperture for modern sensors\u003c\/strong\u003e\u003cbr data-start=\"1562\" data-end=\"1565\"\u003eWith a large light path and a \u003cstrong data-start=\"1595\" data-end=\"1620\"\u003e3\" class focuser body\u003c\/strong\u003e, it’s designed to play nicer with larger camera formats and fast RC imaging accessories. (Exact clear-aperture figure below.) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1786\" data-end=\"1789\"\u003e\n\u003ch3 data-section-id=\"1a94wiq\" data-start=\"1791\" data-end=\"1815\"\u003eTelescope connection\u003c\/h3\u003e\n\u003cul data-start=\"1817\" data-end=\"2087\"\u003e\n\u003cli data-section-id=\"k1anrh\" data-start=\"1817\" data-end=\"1932\"\u003e\n\u003cp data-start=\"1819\" data-end=\"1932\"\u003e\u003cstrong data-start=\"1819\" data-end=\"1845\"\u003eTelescope side thread:\u003c\/strong\u003e \u003cstrong data-start=\"1846\" data-end=\"1854\"\u003eM117\u003c\/strong\u003e (via the included connection adapter) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"yqsf3w\" data-start=\"1933\" data-end=\"2087\"\u003e\n\u003cp data-start=\"1935\" data-end=\"2087\"\u003e\u003cstrong data-start=\"1935\" data-end=\"1964\"\u003eOptional plug connection:\u003c\/strong\u003e remove the adapter to reveal a \u003cstrong data-start=\"1996\" data-end=\"2006\"\u003e105 mm\u003c\/strong\u003e plug interface for custom fits\/adaptations \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2089\" data-end=\"2092\"\u003e\n\u003cp data-start=\"2232\" data-end=\"2409\"\u003e \u003c\/p\u003e","brand":"Starfield","offers":[{"title":"Default Title","offer_id":44561541791855,"sku":"SF-RCFOC3","price":459.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/IMG_4026.jpg?v=1771712601"},{"product_id":"starfield-optics-3-newtonian-focuser-rack-and-pinion","title":"Starfield Optics 3\" Newtonian Focuser Rack and Pinion","description":"\u003cp data-start=\"92\" data-end=\"597\"\u003eIf your Newtonian is carrying a coma corrector, filter wheel, and a full-size camera, the focuser becomes a structural part of the imaging train—not just a convenience. This \u003cstrong data-start=\"266\" data-end=\"288\"\u003e3\" rack-and-pinion\u003c\/strong\u003e unit is built for that role: a large clear aperture, a rigid drawtube support system, and a geared drive that keeps focus repeatable even when the payload is substantial. It’s a strong choice for fast Newtonians and imaging builds that have outgrown typical 2\" focusers. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"599\" data-end=\"602\"\u003e\n\u003ch3 data-section-id=\"f48nwg\" data-start=\"604\" data-end=\"641\"\u003eWhat you get (and why it matters)\u003c\/h3\u003e\n\u003cp data-start=\"643\" data-end=\"1042\"\u003e\u003cstrong data-start=\"643\" data-end=\"703\"\u003eGeared rack-and-pinion drive with “no-surprise” movement\u003c\/strong\u003e\u003cbr data-start=\"703\" data-end=\"706\"\u003eThe drawtube rides on a bearing system while the motion is driven by a \u003cstrong data-start=\"777\" data-end=\"795\"\u003ehelical pinion\u003c\/strong\u003e. That separation between support and adjustment is specifically intended to keep the drawtube from shifting under load—useful for maintaining collimation and field sharpness as your camera train gets heavier. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1044\" data-end=\"1274\"\u003e\u003cstrong data-start=\"1044\" data-end=\"1086\"\u003eDual-speed focusing for critical stars\u003c\/strong\u003e\u003cbr data-start=\"1086\" data-end=\"1089\"\u003eA \u003cstrong data-start=\"1091\" data-end=\"1115\"\u003e10:1 micro-reduction\u003c\/strong\u003e lets you sneak up on perfect focus without overshoot—especially handy at f\/4–f\/5 where the critical focus zone is tight. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1478\" data-end=\"1848\"\u003e\u003cstrong data-start=\"1478\" data-end=\"1507\"\u003eEAF-ready motor interface\u003c\/strong\u003e\u003cbr data-start=\"1507\" data-end=\"1510\"\u003eThis focuser provides a \u003cstrong data-start=\"1534\" data-end=\"1574\"\u003e34 mm shaft diameter motor interface\u003c\/strong\u003e on the focuser side, making it well-suited for adding an electronic focuser motor (such as a ZWO EAF) using an appropriate bracket\/coupler solution. The ZWO EAF system is designed to mount to a wide range of focusers via a bracket kit. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1850\" data-end=\"1853\"\u003e\n\u003ch3 data-section-id=\"12z5ss1\" data-start=\"1855\" data-end=\"1885\"\u003eFitment notes (Newtonians)\u003c\/h3\u003e\n\u003cul data-start=\"1887\" data-end=\"2156\"\u003e\n\u003cli data-section-id=\"1wcx5fb\" data-start=\"1887\" data-end=\"2037\"\u003e\n\u003cp data-start=\"1889\" data-end=\"2037\"\u003eDesigned as a \u003cstrong data-start=\"1903\" data-end=\"1924\"\u003eNewtonian focuser\u003c\/strong\u003e with a flexible base intended for tubes \u003cstrong data-start=\"1965\" data-end=\"1996\"\u003e~225 mm diameter and larger\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"k1d04\" data-start=\"2038\" data-end=\"2156\"\u003e\n\u003cp data-start=\"2040\" data-end=\"2156\"\u003eRequires a tube cutout sized for a 3\" class drawtube\/light path (see specs). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2158\" data-end=\"2161\"\u003e\n\u003ch3 data-section-id=\"ab7fh7\" data-start=\"2163\" data-end=\"2187\"\u003eIncluded connections\u003c\/h3\u003e\n\u003cul data-start=\"2189\" data-end=\"2657\"\u003e\n\u003cli data-section-id=\"p2e9nv\" data-start=\"2189\" data-end=\"2279\"\u003e\n\u003cp data-start=\"2191\" data-end=\"2279\"\u003e\u003cstrong data-start=\"2191\" data-end=\"2209\"\u003eEyepiece side:\u003c\/strong\u003e 2\" + 1.25\" (compression ring) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"qet9is\" data-start=\"2280\" data-end=\"2504\"\u003e\n\u003cp data-start=\"2282\" data-end=\"2504\"\u003e\u003cstrong data-start=\"2282\" data-end=\"2316\"\u003eImaging \/ thread side options:\u003c\/strong\u003e internal \u003cstrong data-start=\"2326\" data-end=\"2343\"\u003eM78x1 \/ M68x1\u003c\/strong\u003e (female) and \u003cstrong data-start=\"2357\" data-end=\"2366\"\u003eM74x1\u003c\/strong\u003e (male) threads are provided to build a fully threaded imaging train (useful with M68 correctors). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"m6wu36\" data-start=\"2505\" data-end=\"2657\"\u003e\n\u003cp data-start=\"2507\" data-end=\"2657\"\u003e\u003cstrong data-start=\"2507\" data-end=\"2520\"\u003eAdapters:\u003c\/strong\u003e 2\" and 1.25\" adapters with compression rings; the 1.25\" adapter includes a \u003cstrong data-start=\"2596\" data-end=\"2616\"\u003e2\" filter thread\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ontario Telescope and Accessories","offers":[{"title":"Default Title","offer_id":44562087182447,"sku":"SF-NWFOC3","price":459.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/IMG_4016_1.jpg?v=1771714316"}],"url":"https:\/\/ontariotelescope.com\/collections\/starfield-optics-focusers.oembed","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}