{"product_id":"stellalyra-10-f-4-m-lrn-newtonian-reflector-with-3-dual-speed-focuser","title":"StellaLyra 10\" f\/4 M-LRN Newtonian Reflector with 3\" Dual-Speed Focuser","description":"\u003cstyle\u003e\n.dcs-m10{max-width:1120px;margin:0 auto;color:#243445;font:inherit;line-height:1.7;text-align:left;overflow-wrap:anywhere}\n.dcs-m10 *{box-sizing:border-box}.dcs-m10 h2,.dcs-m10 h3{color:#091725;line-height:1.25;letter-spacing:normal;text-align:left}\n.dcs-m10 h2{font-size:clamp(25px,3vw,34px);margin:0 0 18px}.dcs-m10 h3{font-size:23px;margin:0 0 16px}\n.dcs-m10 p{margin:0 0 16px}.dcs-m10 figure{margin:0;background:#fff;border:1px solid #e0e5e9;border-radius:12px;overflow:hidden}\n.dcs-m10 img{display:block;width:100%;height:auto;max-width:600px;margin:auto;object-fit:contain}\n.dcs-m10 .m10-feature,.dcs-m10 .m10-intro{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));gap:clamp(20px,4vw,40px);align-items:center;margin:0 0 38px}\n.dcs-m10 .m10-intro{padding:24px;background:#091725;border-top:4px solid #c89524;border-radius:12px}\n.dcs-m10 .m10-intro h2,.dcs-m10 .m10-intro p{color:#fff!important}\n.dcs-m10 .m10-label{font-size:12px;letter-spacing:.12em;text-transform:uppercase;font-weight:700}\n.dcs-m10 .m10-panel{background:#f3f5f7;border-radius:12px;padding:24px;margin:0 0 32px}\n.dcs-m10 ul{padding-left:22px;margin:0 0 16px}.dcs-m10 li{margin-bottom:8px}\n.dcs-m10 table{border-collapse:collapse;width:100%;table-layout:fixed;margin:16px 0 28px;font-size:15px}\n.dcs-m10 th,.dcs-m10 td{padding:10px 12px;border-bottom:1px solid #dce2e8;text-align:left;vertical-align:top;white-space:normal}\n.dcs-m10 th{background:#f3f5f7;color:#091725}.dcs-m10 th[scope=row]{width:42%}\n.dcs-m10 details{border-bottom:1px solid #dce2e8;padding:16px 0}.dcs-m10 summary{cursor:pointer;font-weight:700;color:#091725}.dcs-m10 details p{margin:12px 0 0}\n.dcs-m10 .m10-note{border-left:3px solid #c89524;padding:14px 18px;background:#fff8e8;margin:28px 0}\n.dcs-m10 .m10-links{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0}.dcs-m10 .m10-links a{padding:12px 18px;border-radius:6px;background:#c89524;color:#091725!important;font-weight:700;text-decoration:none!important;min-height:44px}\n.dcs-m10 .m10-links a:last-child{background:#f0f3f6}.dcs-m10 a:focus-visible,.dcs-m10 summary:focus-visible{outline:3px solid #2874aa;outline-offset:4px}\n@media(max-width:600px){.dcs-m10 .m10-intro,.dcs-m10 .m10-panel{padding:18px}.dcs-m10 th,.dcs-m10 td{padding:9px 7px;font-size:14px}}\n\u003c\/style\u003e\n\u003csection class=\"dcs-m10\"\u003e\n\u003cdiv class=\"m10-intro\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"m10-label\"\u003eStellaLyra · 10-inch f\/4 M-LRN Newtonian\u003c\/p\u003e\n\u003ch2\u003eA larger canvas for your next deep-sky project.\u003c\/h2\u003e\n\u003cp\u003eThe StellaLyra 10-inch f\/4 brings a 254mm parabolic mirror and 1016mm focal length to a metal-tube imaging Newtonian with a 3-inch dual-speed linear Crayford focuser.\u003c\/p\u003e\n\u003cp\u003eChoose it for a carefully planned camera rig when you want a closer view of your targets and have the mount, space and setup routine to support a substantial optical tube.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/stellalyra-10-f4-mlrn-newtonian.jpg?v=1789723153\" alt=\"StellaLyra 10-inch f\/4 M-LRN imaging Newtonian; mount not included\" width=\"600\" height=\"600\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"m10-note\"\u003e\n\u003cstrong\u003eOptical tube package — mount and camera purchased separately.\u003c\/strong\u003e\u003cp\u003eAny mount shown in the photographs is for illustration. Published weight is 14.8kg with rings, dovetail and finder, before adding imaging equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"m10-feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/stellalyra-10-f4-metal-detail-1.jpg?v=1789813708\" alt=\"Front aperture of StellaLyra 10-inch f\/4 Newtonian; supporting mount not included\" width=\"600\" height=\"600\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003cdiv\u003e\n\u003ch3\u003eFrame smaller subjects more closely.\u003c\/h3\u003e\n\u003cp\u003eAt the same camera sensor size, 1016mm gives a tighter field than an 800mm telescope. That can be useful when a target occupies too little of your existing frame. Larger nebulae may instead call for a mosaic or a shorter focal length.\u003c\/p\u003e\n\u003cp\u003eCheck several intended subjects in a field-of-view planner with your own camera. Consider the surrounding sky you want to include as well as the object itself. The right framing is more useful than buying extra aperture without a clear imaging goal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"m10-panel\"\u003e\n\u003ch3\u003eMake mounting and handling part of the buying decision.\u003c\/h3\u003e\n\u003cp\u003eThe tube is 980mm long and measures 307mm across its end caps. Check the space available for storage, transport and lifting it into the saddle, including the route from your storage area to the observing position.\u003c\/p\u003e\n\u003cp\u003eYour mount must carry the entire working assembly. Add the camera, corrector, filters, guiding equipment and cables to the published tube-package weight. Consider the tube’s length and exposure to wind alongside the mount’s payload figure, and allow for the counterweights and balance range your system needs.\u003c\/p\u003e\n\u003cp\u003ePractise assembly in daylight. Support the tube securely while fastening the saddle and rings, then check camera and cable clearance before letting the mount move unattended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"m10-feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/stellalyra-10-f4-metal-detail-2.jpg?v=1789813719\" alt=\"StellaLyra 10-inch Newtonian showing focuser, finder and tube ring\" width=\"600\" height=\"600\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003cdiv\u003e\n\u003ch3\u003eUseful hardware for building your system.\u003c\/h3\u003e\n\u003cp\u003eTube rings, a Vixen-style rail and an 8×50 straight-through finder are supplied. Confirm that the rail suits your mount saddle, and align the finder with the main telescope before your first night.\u003c\/p\u003e\n\u003cp\u003ePlan where guiding and control equipment will sit before adding it. Keep cables supported with enough movement for the telescope’s travel, and avoid routing them where they can snag or pull on the camera. An optical finder alone does not provide autoguiding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"m10-feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/stellalyra-10-f4-metal-detail-3.jpg?v=1789813731\" alt=\"Close-up of the StellaLyra 10-inch Newtonian dual-speed focuser\" width=\"600\" height=\"600\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003cdiv\u003e\n\u003ch3\u003eA 3-inch focuser with fine manual control.\u003c\/h3\u003e\n\u003cp\u003eThe Crayford focuser offers coarse and fine adjustment for approaching focus and refining it with test exposures. Fit and support the camera carefully, then check that the complete assembly stays secure as the tube changes orientation.\u003c\/p\u003e\n\u003cp\u003eThe focuser’s diameter does not by itself establish camera coverage or a safe imaging-payload limit. Check your corrector, adapters and camera together. If adding autofocus, confirm the specific motor, bracket and coupling requirements before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eChoose the coma corrector alongside the camera.\u003c\/h3\u003e\n\u003cp\u003eA compatible coma corrector is required for optimum photographic results and is not included. Its specified sensor spacing, supported sensor size and connections all matter when planning the imaging train.\u003c\/p\u003e\n\u003cp\u003eWrite down each component between the corrector and sensor, including any filter wheel or drawer. Set the spacing to the corrector manufacturer’s instructions, then check that the whole assembly reaches focus. Do not use focuser travel as a substitute for setting the correct spacing.\u003c\/p\u003e\n\u003ch3\u003eCooling and alignment before a long sequence.\u003c\/h3\u003e\n\u003cp\u003eA mirror-cooling fan and battery holder are included. Allow time for the telescope to settle towards outdoor conditions, and check collimation after transport using a suitable tool.\u003c\/p\u003e\n\u003cp\u003eTake short star-field exposures before committing to a target. Inspect the centre and corners, check tracking, and recheck focus as the night progresses. If something changes, investigate one factor at a time so you can identify whether the cause is focus, alignment, spacing, tilt or mount behaviour.\u003c\/p\u003e\n\u003ch3\u003eWhat is included?\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eIn the optical tube package\u003c\/th\u003e\n\u003cth scope=\"col\"\u003ePlan for separately\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical tube with fitted focuser\u003c\/td\u003e\n\u003ctd\u003eSuitable tracking mount and tripod or pier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube rings and Vixen-style rail\u003c\/td\u003e\n\u003ctd\u003eCamera, coma corrector and camera adapters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8×50 finder\u003c\/td\u003e\n\u003ctd\u003eGuiding equipment and control system as required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling fan and battery holder\u003c\/td\u003e\n\u003ctd\u003ePower, collimation tool and transport protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e35mm 2-inch extension and 1.25-inch adapter\u003c\/td\u003e\n\u003ctd\u003eEyepieces for visual observing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSpecifications for planning your rig\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOptical design\u003c\/th\u003e\n\u003ctd\u003eParabolic Newtonian reflector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAperture \/ focal length\u003c\/th\u003e\n\u003ctd\u003e254mm \/ 1016mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eFocal ratio\u003c\/th\u003e\n\u003ctd\u003ef\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eFocuser\u003c\/th\u003e\n\u003ctd\u003e3-inch dual-speed linear Crayford\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTube length\u003c\/th\u003e\n\u003ctd\u003e980mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003e303mm body; 307mm end caps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight with rings, rail and finder\u003c\/th\u003e\n\u003ctd\u003e14.8kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eBefore ordering\u003c\/h3\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this a good choice for a portable setup?\u003c\/summary\u003e\u003cp\u003eThat depends on your transport, lifting arrangements and mount. Measure your available space and consider the complete setup routine. If frequent travel is the priority, compare the smaller models before committing to this tube.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes the larger focuser guarantee full-frame imaging?\u003c\/summary\u003e\u003cp\u003eNo. Corrected field coverage depends on the complete optical system, including the corrector and adapters. Tell us your camera model and proposed imaging train so compatibility can be checked.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I use it visually?\u003c\/summary\u003e\u003cp\u003eYes, with suitable eyepieces and the appropriate focus configuration. Eyepieces and the mount are separate purchases. For mainly visual observing, also compare a Dobsonian’s mounting arrangement and everyday handling.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"m10-note\"\u003e\n\u003cstrong\u003eSupplier-stock availability\u003c\/strong\u003e\u003cp\u003eAvailability reflects supplier stock and can change. Contact Dark Clear Skies to confirm dispatch timing if you need the telescope for a particular date.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"m10-links\"\u003e\n\u003ca href=\"\/pages\/stellalyra\"\u003eExplore the StellaLyra range\u003c\/a\u003e\u003ca href=\"mailto:contact@darkclearskies.co.uk?subject=StellaLyra%2010-inch%20f4%20M-LRN\"\u003eCheck your proposed setup\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e","brand":"StellaLyra","offers":[{"title":"Default Title","offer_id":55665190076792,"sku":null,"price":549.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/stellalyra-10-f4-mlrn-newtonian.jpg?v=1789723153","url":"https:\/\/www.darkclearskies.co.uk\/products\/stellalyra-10-f-4-m-lrn-newtonian-reflector-with-3-dual-speed-focuser","provider":"Dark Clear Skies ","version":"1.0","type":"link"}