{"product_id":"stellalyra-8-f-4-m-lrn-newtonian-reflector-with-2-dual-speed-focuser","title":"StellaLyra 8\" f\/4 M-LRN Newtonian Reflector with 2\" Dual-Speed Focuser","description":"\u003cstyle\u003e\n.dcs-m8{max-width:1120px;margin:0 auto;color:#243445;font:inherit;line-height:1.7;text-align:left;overflow-wrap:anywhere}\n.dcs-m8 *{box-sizing:border-box}.dcs-m8 h2,.dcs-m8 h3{color:#091725;line-height:1.25;letter-spacing:normal;text-align:left}\n.dcs-m8 h2{font-size:clamp(25px,3vw,34px);margin:0 0 18px}.dcs-m8 h3{font-size:23px;margin:0 0 16px}\n.dcs-m8 p{margin:0 0 16px}.dcs-m8 figure{margin:0;background:#fff;border:1px solid #e0e5e9;border-radius:12px;overflow:hidden}\n.dcs-m8 img{display:block;width:100%;height:auto;max-width:600px;margin:auto;object-fit:contain}\n.dcs-m8 .m8-feature,.dcs-m8 .m8-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-m8 .m8-intro{padding:24px;background:#091725;border-top:4px solid #c89524;border-radius:12px}\n.dcs-m8 .m8-intro h2,.dcs-m8 .m8-intro p{color:#fff!important}\n.dcs-m8 .m8-label{font-size:12px;letter-spacing:.12em;text-transform:uppercase;font-weight:700}\n.dcs-m8 .m8-panel{background:#f3f5f7;border-radius:12px;padding:24px;margin:0 0 32px}\n.dcs-m8 ul{padding-left:22px;margin:0 0 16px}.dcs-m8 li{margin-bottom:8px}\n.dcs-m8 table{border-collapse:collapse;width:100%;table-layout:fixed;margin:16px 0 28px;font-size:15px}\n.dcs-m8 th,.dcs-m8 td{padding:10px 12px;border-bottom:1px solid #dce2e8;text-align:left;vertical-align:top;white-space:normal}\n.dcs-m8 th{background:#f3f5f7;color:#091725}.dcs-m8 th[scope=row]{width:42%}\n.dcs-m8 details{border-bottom:1px solid #dce2e8;padding:16px 0}.dcs-m8 summary{cursor:pointer;font-weight:700;color:#091725}.dcs-m8 details p{margin:12px 0 0}\n.dcs-m8 .m8-note{border-left:3px solid #c89524;padding:14px 18px;background:#fff8e8;margin:28px 0}\n.dcs-m8 .m8-links{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0}.dcs-m8 .m8-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-m8 .m8-links a:last-child{background:#f0f3f6}.dcs-m8 a:focus-visible,.dcs-m8 summary:focus-visible{outline:3px solid #2874aa;outline-offset:4px}\n@media(max-width:600px){.dcs-m8 .m8-intro,.dcs-m8 .m8-panel{padding:18px}.dcs-m8 th,.dcs-m8 td{padding:9px 7px;font-size:14px}}\n\u003c\/style\u003e\n\u003csection class=\"dcs-m8\"\u003e\n\u003cdiv class=\"m8-intro\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"m8-label\"\u003eStellaLyra · 8-inch f\/4 M-LRN Newtonian\u003c\/p\u003e\n\u003ch2\u003eBring your deep-sky targets into a closer frame.\u003c\/h2\u003e\n\u003cp\u003eThe StellaLyra 8-inch f\/4 metal-tube Newtonian pairs a 203mm aperture with an 800mm focal length. It is a practical optical platform for building a dedicated imaging rig around your choice of camera, mount and corrector.\u003c\/p\u003e\n\u003cp\u003eA dual-speed focuser, mirror-cooling fan and mounting hardware give you useful starting equipment. The next step is matching the complete system to the photographs you want to take.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/stellalyra-8-f4-mlrn-newtonian.jpg?v=1789723142\" alt=\"StellaLyra 8-inch f\/4 M-LRN metal-tube imaging Newtonian\" width=\"600\" height=\"600\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"m8-panel\"\u003e\n\u003ch3\u003eIs 800mm right for your camera?\u003c\/h3\u003e\n\u003cp\u003eWith the same sensor, a longer focal length frames a smaller area of sky. Moving from a 600mm telescope to this 800mm model can help when your target looks too small in the wider view, while larger subjects may need a mosaic.\u003c\/p\u003e\n\u003cp\u003eTry your camera and a few favourite targets in a field-of-view planner before choosing. Think about how much surrounding sky you want in the finished image, as well as whether the subject fits. This makes a more useful starting point than selecting on aperture alone.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"m8-feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/stellalyra-8-f4-metal-detail-1.jpg?v=1789806725\" alt=\"StellaLyra 8-inch f\/4 metal Newtonian with rings and Vixen-style rail\" width=\"600\" height=\"600\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003cdiv\u003e\n\u003ch3\u003eChoose the mount around the finished rig.\u003c\/h3\u003e\n\u003cp\u003eThe supplied rings and Vixen-style rail connect the tube to a compatible mount saddle. Published weight is 8.4kg with rings, rail and finder; the tube is 730mm long.\u003c\/p\u003e\n\u003cp\u003eAdd the camera, corrector, filters, guide equipment and cabling when assessing your mounting requirements. Allow room for steady tracking as well as simply carrying the load. Assemble and balance with the actual imaging train fitted, then check camera clearance through the movement you expect during a session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"m8-feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/stellalyra-8-f4-metal-detail-2.jpg?v=1789806737\" alt=\"Rear cooling fan and collimation controls on StellaLyra 8-inch Newtonian\" width=\"600\" height=\"600\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003cdiv\u003e\n\u003ch3\u003eGive the mirror time to settle.\u003c\/h3\u003e\n\u003cp\u003eA rear cooling fan and battery holder are included. The fan assists cooling, while the rear adjustment knobs provide access to primary-mirror collimation.\u003c\/p\u003e\n\u003cp\u003eSet up early enough for the telescope to approach outdoor conditions. Check alignment after transport using a suitable collimation tool, then examine a focused star field. Cooling, focus, alignment and tracking all contribute to the result; avoid trying to solve every soft star with a focuser adjustment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"m8-feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/stellalyra-8-f4-metal-detail-4.jpg?v=1789806750\" alt=\"Dual-speed Crayford focuser and optical finder on StellaLyra 8-inch Newtonian\" width=\"600\" height=\"600\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003cdiv\u003e\n\u003ch3\u003eFine control for the final focus adjustment.\u003c\/h3\u003e\n\u003cp\u003eThe fitted 2-inch linear-bearing Crayford focuser offers coarse and fine manual control. Approach focus with short exposures, then use the fine adjustment while checking a repeatable focus measurement.\u003c\/p\u003e\n\u003cp\u003eSecure each connection and keep cables from pulling on the camera. Revisit focus during the night as conditions change. If autofocus is part of your plan, check the motor, bracket and coupling together; an automatic focuser is a separate accessory.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003ePlan the corrector and camera as one assembly.\u003c\/h3\u003e\n\u003cp\u003eA compatible coma corrector is required for optimum imaging results and is purchased separately. Set the corrector-to-sensor distance to its manufacturer’s specification, accounting for the camera and any filter hardware. Then confirm that the assembly can reach focus.\u003c\/p\u003e\n\u003cp\u003eCorrector spacing and focuser position serve different purposes. Keep a record of your adapters and measurements, so that removing the camera does not mean starting the setup process again. Check the supported sensor size and mechanical connections rather than assuming every 2-inch component is interchangeable.\u003c\/p\u003e\n\u003cdiv class=\"m8-panel\"\u003e\n\u003ch3\u003eA useful first-night routine\u003c\/h3\u003e\n\u003cp\u003eBegin with short test exposures before committing to a long sequence. Compare stars at the centre and in each corner, check that guiding behaves consistently and watch for cable tension as the mount moves.\u003c\/p\u003e\n\u003cp\u003eIf a problem appears, change one variable at a time. Keep notes on focus, spacing and alignment. That record helps you distinguish a repeatable setup issue from changing sky conditions, and makes the next clear night more productive.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eIncluded equipment and what to add\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eIncluded\u003c\/th\u003e\n\u003cth scope=\"col\"\u003ePurchased 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\u003eTracking mount and tripod or pier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRings and Vixen-style mounting 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 straight-through finder\u003c\/td\u003e\n\u003ctd\u003eAny guide camera and guiding connections\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling fan and battery holder\u003c\/td\u003e\n\u003ctd\u003ePower supplies and control equipment\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 use; collimation tool\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSystem-planning specifications\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\u003e203mm \/ 800mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eFocal ratio\u003c\/th\u003e\n\u003ctd\u003eNominal f\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eFocuser\u003c\/th\u003e\n\u003ctd\u003e2-inch dual-speed linear-bearing Crayford\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTube length\u003c\/th\u003e\n\u003ctd\u003e730mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003e232mm body; 236mm at 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\u003e8.4kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eCommon buying questions\u003c\/h3\u003e\n\u003cdetails\u003e\u003csummary\u003eShould I choose the 6-inch or the 8-inch?\u003c\/summary\u003e\u003cp\u003eCompare framing with your camera first, then the complete mount load and handling. The 8-inch offers a closer view with the same sensor, but a smaller setup may be easier to transport and use regularly. Match the telescope to both your targets and your observing routine.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan the finder guide the telescope?\u003c\/summary\u003e\u003cp\u003eThe included finder is an optical pointing aid. Autoguiding requires additional equipment and suitable connections; it is not provided simply by attaching the finder. Ask us to check your proposed guiding arrangement alongside the main camera setup.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I observe through it as well?\u003c\/summary\u003e\u003cp\u003eYes, with separately purchased eyepieces and an appropriate focus configuration. Use the supplied extension or adapter as required by that setup. If visual observing is your main aim, compare the mounting and eyepiece requirements with the Dobsonian range before deciding.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"m8-note\"\u003e\n\u003cstrong\u003eSupplier-stock availability\u003c\/strong\u003e\u003cp\u003eAvailability reflects supplier stock and can change. Please contact Dark Clear Skies to confirm dispatch timing if your order is needed for a particular date.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"m8-links\"\u003e\n\u003ca href=\"\/pages\/stellalyra\"\u003eCompare StellaLyra telescopes\u003c\/a\u003e\u003ca href=\"mailto:contact@darkclearskies.co.uk?subject=StellaLyra%208-inch%20f4%20M-LRN\"\u003eAsk about your imaging setup\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e","brand":"StellaLyra","offers":[{"title":"Default Title","offer_id":55665189880184,"sku":null,"price":499.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/stellalyra-8-f4-mlrn-newtonian.jpg?v=1789723142","url":"https:\/\/www.darkclearskies.co.uk\/products\/stellalyra-8-f-4-m-lrn-newtonian-reflector-with-2-dual-speed-focuser","provider":"Dark Clear Skies ","version":"1.0","type":"link"}