{"product_id":"stellalyra-10-f-8-m-lrc-d-ritchey-chretien-carbon-fibre-telescope-ota","title":"StellaLyra 10\" F\/8 M-LRC-D Ritchey-Chrétien Carbon Fibre Telescope OTA","description":"\u003cstyle\u003e\n.dcs-rc10c{max-width:1120px;margin:0 auto;color:#243445;font:inherit;line-height:1.7;text-align:left;overflow-wrap:anywhere}\n.dcs-rc10c *{box-sizing:border-box}.dcs-rc10c h2,.dcs-rc10c h3{color:#091725;line-height:1.25;letter-spacing:normal;text-align:left}\n.dcs-rc10c h2{font-size:clamp(25px,3vw,34px);margin:0 0 18px}.dcs-rc10c h3{font-size:23px;margin:0 0 16px}\n.dcs-rc10c p{margin:0 0 16px}.dcs-rc10c figure{margin:0;background:#fff;border:1px solid #e0e5e9;border-radius:12px;overflow:hidden}\n.dcs-rc10c img{display:block;width:100%;height:auto;max-width:600px;margin:auto;object-fit:contain}\n.dcs-rc10c .rc10c-feature,.dcs-rc10c .rc10c-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-rc10c .rc10c-intro{padding:24px;background:#091725;border-top:4px solid #c89524;border-radius:12px}\n.dcs-rc10c .rc10c-intro h2,.dcs-rc10c .rc10c-intro p{color:#fff!important}\n.dcs-rc10c .rc10c-label{font-size:12px;letter-spacing:.12em;text-transform:uppercase;font-weight:700}\n.dcs-rc10c .rc10c-panel{background:#f3f5f7;border-radius:12px;padding:24px;margin:0 0 32px}\n.dcs-rc10c ul{padding-left:22px;margin:0 0 16px}.dcs-rc10c li{margin-bottom:8px}\n.dcs-rc10c table{border-collapse:collapse;width:100%;table-layout:fixed;margin:16px 0 28px;font-size:15px}\n.dcs-rc10c th,.dcs-rc10c td{padding:10px 12px;border-bottom:1px solid #dce2e8;text-align:left;vertical-align:top;white-space:normal}\n.dcs-rc10c th{background:#f3f5f7;color:#091725}.dcs-rc10c th[scope=row]{width:42%}\n.dcs-rc10c details{border-bottom:1px solid #dce2e8;padding:16px 0}.dcs-rc10c summary{cursor:pointer;font-weight:700;color:#091725}.dcs-rc10c details p{margin:12px 0 0}\n.dcs-rc10c .rc10c-note{border-left:3px solid #c89524;padding:14px 18px;background:#fff8e8;margin:28px 0}\n.dcs-rc10c .rc10c-links{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0}.dcs-rc10c .rc10c-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-rc10c .rc10c-links a:last-child{background:#f0f3f6}.dcs-rc10c a:focus-visible,.dcs-rc10c summary:focus-visible{outline:3px solid #2874aa;outline-offset:4px}\n@media(max-width:600px){.dcs-rc10c .rc10c-intro,.dcs-rc10c .rc10c-panel{padding:18px}.dcs-rc10c th,.dcs-rc10c td{padding:9px 7px;font-size:14px}}\n.dcs-rc10c figcaption{padding:12px 16px;color:#243445;background:#fff;font-size:14px;line-height:1.5}\u003c\/style\u003e\n\u003csection class=\"dcs-rc10c\"\u003e\n\u003cdiv class=\"rc10c-intro\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"rc10c-label\"\u003eStellaLyra · 10-inch f\/8 M-LRC-D Carbon-Fibre RC\u003c\/p\u003e\n\u003ch2\u003eA solid carbon-fibre RC for detailed deep-sky imaging.\u003c\/h2\u003e\n\u003cp\u003eThe StellaLyra 10-inch M-LRC-D brings a 250mm aperture and 2000mm, f\/8 optical system to a solid carbon-fibre tube. It is built around the needs of an experienced imager choosing a complete setup for smaller galaxies, compact nebulae and other targets that suit a narrower field.\u003c\/p\u003e\n\u003cp\u003eIts appeal is the combination of a long-focus RC optical system and enclosed carbon-fibre construction. Plan the mount, guiding, camera and adapters alongside the telescope so the complete system supports the work you want to do.\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-f8-carbon-rc-hero.jpg?v=1789818042\" alt=\"StellaLyra 10-inch f\/8 M-LRC-D carbon-fibre RC optical tube\" width=\"600\" height=\"600\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rc10c-panel\"\u003e\n\u003ch3\u003eSee what the focal length means for your camera.\u003c\/h3\u003e\n\u003cp\u003eA longer focal length gives the same target more room on the sensor and narrows the surrounding field. That is useful for some projects, but it can turn a large nebula into a mosaic.\u003c\/p\u003e\n\u003cp\u003eAs a planning example, a 23.5 × 15.7mm sensor at the native focal length covers approximately \u003cstrong\u003e40 × 27 arcminutes\u003c\/strong\u003e. This is a geometric field-of-view estimate, not a claim that every part of that sensor will be fully corrected or illuminated.\u003c\/p\u003e\n\u003cp\u003eCheck your actual camera dimensions and target framing before buying. Pixel size and local seeing also matter: a very fine image scale makes tracking and focus errors easier to see without necessarily recording more resolved detail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rc10c-feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/stellalyra-10-f8-carbon-rc-optics.jpg?v=1789818076\" alt=\"Front optical assembly of StellaLyra 10-inch carbon-fibre Ritchey-Chretien\" width=\"600\" height=\"600\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003cdiv\u003e\n\u003ch3\u003eAn RC optical system for a planned imaging train.\u003c\/h3\u003e\n\u003cp\u003eThe Ritchey–Chrétien design corrects coma, while the primary stays fixed during focusing. This provides a useful starting point for a dedicated camera setup.\u003c\/p\u003e\n\u003cp\u003eComa correction does not guarantee a flat image plane across every sensor. Select any flattener or reducer for the RC design, the intended camera and the required connections. A Newtonian coma corrector is not a substitute simply because its barrel fits.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eChoose the mount for the whole working assembly.\u003c\/h3\u003e\n\u003cp\u003eThe published tube weight is \u003cstrong\u003e15.2kg\u003c\/strong\u003e. Add the camera, filters, guiding equipment, correction optics and attached accessories before assessing the load. Check counterweight needs and the complete system’s balance as well as the mount’s quoted payload.\u003c\/p\u003e\n\u003cp\u003eAt this focal length, accurate tracking matters throughout an exposure. Consider guiding arrangements, the stiffness of each connection and your likely exposure lengths when deciding whether an existing mount is suitable. Plan how to support the tube securely during fitting and removal.\u003c\/p\u003e\n\u003cdiv class=\"rc10c-feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/stellalyra-10-f8-carbon-rc-rear.jpg?v=1789818053\" alt=\"Rear view of StellaLyra 10-inch carbon-fibre RC showing focuser and cooling fans\" width=\"600\" height=\"600\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003cdiv\u003e\n\u003ch3\u003eChoose the tube construction with the whole system in mind.\u003c\/h3\u003e\n\u003cp\u003eThe solid carbon-fibre tube carries upper and lower Losmandy-style rails, with a cooling-fan system at the rear.\u003c\/p\u003e\n\u003cp\u003eCarbon fibre does not change the framing associated with the native focal length, and it does not make the complete assembly immune to temperature changes. Mirrors, the focuser, adapters and camera still form part of the working system. Check saddle engagement, balance the assembled rig and keep cables free throughout its pointing range.\u003c\/p\u003e\n\u003cp\u003eAllow time for thermal equalisation before evaluating star shapes. Recheck focus as conditions change; a recorded focus position is a starting point rather than a guarantee for the rest of the night.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rc10c-feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/stellalyra-10-f8-carbon-rc-side.jpg?v=1789818065\" alt=\"StellaLyra 10-inch carbon-fibre RC with upper and lower mounting rails\" width=\"600\" height=\"600\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003cdiv\u003e\n\u003ch3\u003eFine focus and a secure camera connection.\u003c\/h3\u003e\n\u003cp\u003eThe rotatable 3.25-inch dual-speed linear-bearing Crayford focuser provides coarse and fine manual control.\u003c\/p\u003e\n\u003cp\u003eSupport the camera while attaching it, secure every joint and check the train at different pointing angles. Keep cable weight off the focuser. If you intend to automate focus, establish the correct motor bracket and coupling for the supplied focuser before ordering.\u003c\/p\u003e\n\u003cp\u003eRecord a useful starting position, but recheck focus as conditions change. The apparent size of the focuser alone does not specify a safe camera payload or corrected sensor coverage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rc10c-panel\"\u003e\n\u003ch3\u003eGet extension and sensor spacing right.\u003c\/h3\u003e\n\u003cp\u003eThe supplied rings let you position the focuser to suit the assembled camera train. Use the combination that brings the system to focus with adjustment remaining, rather than fitting every ring automatically.\u003c\/p\u003e\n\u003cp\u003eA reducer or flattener introduces a separate requirement: its specified distance to the camera sensor. Count the sensor recess, adapters and filter equipment in that measurement. Establish those optical distances first, then confirm that the complete arrangement reaches focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eCheck the field before committing to a night’s imaging.\u003c\/h3\u003e\n\u003cp\u003eInspect short exposures at the centre and corners. If star shapes differ across the image, investigate focus, tracking, camera tilt, spacing and collimation methodically.\u003c\/p\u003e\n\u003cp\u003eUse an alignment procedure appropriate to an RC, with a star-field check as the final assessment. Change one factor at a time and keep notes. This makes it easier to identify the cause of a problem and return to a known arrangement after transport or an accessory change.\u003c\/p\u003e\n\u003ch3\u003eIncluded and purchased separately\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eSupplied with the OTA\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eChoose separately\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarbon-fibre RC optical assembly and focuser\u003c\/td\u003e\n\u003ctd\u003eTracking mount and tripod or pier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpper and lower rails; cooling fans\u003c\/td\u003e\n\u003ctd\u003eCamera, filters, guiding and power equipment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTwo 25mm and one 50mm extension rings\u003c\/td\u003e\n\u003ctd\u003eCamera adapters and any RC-compatible correction optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2-inch holder and 1.25-inch adapter\u003c\/td\u003e\n\u003ctd\u003eDiagonal and eyepieces for visual use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinder base; primary and secondary dust covers\u003c\/td\u003e\n\u003ctd\u003eFinder and transport protection if needed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eDimensions for installation\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePublished tube length\u003c\/th\u003e\n\u003ctd\u003e610mm, excluding the focuser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePublished outside diameter\u003c\/th\u003e\n\u003ctd\u003e297mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eAllow additional room for the rear imaging train, cables and access to the controls. Tube dimensions alone do not establish the clearance needed for a complete mounted system.\u003c\/p\u003e\n\u003ch3\u003eBefore ordering\u003c\/h3\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this ready to take photographs on its own?\u003c\/summary\u003e\u003cp\u003eNo. It is an optical tube assembly. Budget for the mount, camera, adapters, guiding and any correction optics as a complete system. The telescope is not supplied with a mount.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill a larger camera need a flattener?\u003c\/summary\u003e\u003cp\u003eAssess the specific sensor and your expectations for the image corners. RC optics correct coma, but field curvature and mechanical alignment still matter. Confirm the proposed combination before buying correction optics or adapters.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I also use it visually?\u003c\/summary\u003e\u003cp\u003eWith suitable separately purchased accessories and a mount, visual observing is possible. Check the diagonal, eyepiece and extension arrangement reaches focus. Choose this telescope principally around the imaging work you intend to do.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"rc10c-note\"\u003e\n\u003cstrong\u003eSupplier-stock availability\u003c\/strong\u003e\u003cp\u003eAvailability reflects supplier stock and may 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=\"rc10c-links\"\u003e\n\u003ca href=\"\/pages\/stellalyra\"\u003eCompare the StellaLyra range\u003c\/a\u003e\u003ca href=\"mailto:contact@darkclearskies.co.uk?subject=StellaLyra%2010-inch%20carbon-fibre%20RC\"\u003eDiscuss your imaging system\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n","brand":"StellaLyra","offers":[{"title":"Default Title","offer_id":55665192927608,"sku":null,"price":2399.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/stellalyra-10-f8-carbon-rc-hero.jpg?v=1789818042","url":"https:\/\/www.darkclearskies.co.uk\/products\/stellalyra-10-f-8-m-lrc-d-ritchey-chretien-carbon-fibre-telescope-ota","provider":"Dark Clear Skies ","version":"1.0","type":"link"}