{"product_id":"stellalyra-6-f-9-m-crf-ritchey-chretien-carbon-fibre-telescope-ota","title":"StellaLyra 6\" F\/9 M-CRF Ritchey-Chrétien Carbon Fibre Telescope OTA","description":"\u003cstyle\u003e\n.dcs-rc6c{max-width:1120px;margin:0 auto;color:#243445;font:inherit;line-height:1.7;text-align:left;overflow-wrap:anywhere}\n.dcs-rc6c *{box-sizing:border-box}.dcs-rc6c h2,.dcs-rc6c h3{color:#091725;line-height:1.25;letter-spacing:normal;text-align:left}\n.dcs-rc6c h2{font-size:clamp(25px,3vw,34px);margin:0 0 18px}.dcs-rc6c h3{font-size:23px;margin:0 0 16px}\n.dcs-rc6c p{margin:0 0 16px}.dcs-rc6c figure{margin:0;background:#fff;border:1px solid #e0e5e9;border-radius:12px;overflow:hidden}\n.dcs-rc6c img{display:block;width:100%;height:auto;max-width:600px;margin:auto;object-fit:contain}\n.dcs-rc6c .rc6c-feature,.dcs-rc6c .rc6c-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-rc6c .rc6c-intro{padding:24px;background:#091725;border-top:4px solid #c89524;border-radius:12px}\n.dcs-rc6c .rc6c-intro h2,.dcs-rc6c .rc6c-intro p{color:#fff!important}\n.dcs-rc6c .rc6c-label{font-size:12px;letter-spacing:.12em;text-transform:uppercase;font-weight:700}\n.dcs-rc6c .rc6c-panel{background:#f3f5f7;border-radius:12px;padding:24px;margin:0 0 32px}\n.dcs-rc6c ul{padding-left:22px;margin:0 0 16px}.dcs-rc6c li{margin-bottom:8px}\n.dcs-rc6c table{border-collapse:collapse;width:100%;table-layout:fixed;margin:16px 0 28px;font-size:15px}\n.dcs-rc6c th,.dcs-rc6c td{padding:10px 12px;border-bottom:1px solid #dce2e8;text-align:left;vertical-align:top;white-space:normal}\n.dcs-rc6c th{background:#f3f5f7;color:#091725}.dcs-rc6c th[scope=row]{width:42%}\n.dcs-rc6c details{border-bottom:1px solid #dce2e8;padding:16px 0}.dcs-rc6c summary{cursor:pointer;font-weight:700;color:#091725}.dcs-rc6c details p{margin:12px 0 0}\n.dcs-rc6c .rc6c-note{border-left:3px solid #c89524;padding:14px 18px;background:#fff8e8;margin:28px 0}\n.dcs-rc6c .rc6c-links{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0}.dcs-rc6c .rc6c-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-rc6c .rc6c-links a:last-child{background:#f0f3f6}.dcs-rc6c a:focus-visible,.dcs-rc6c summary:focus-visible{outline:3px solid #2874aa;outline-offset:4px}\n@media(max-width:600px){.dcs-rc6c .rc6c-intro,.dcs-rc6c .rc6c-panel{padding:18px}.dcs-rc6c th,.dcs-rc6c td{padding:9px 7px;font-size:14px}}\n\u003c\/style\u003e\n\u003csection class=\"dcs-rc6c\"\u003e\n\u003cdiv class=\"rc6c-intro\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"rc6c-label\"\u003eStellaLyra · 6-inch f\/9 Carbon-Fibre RC\u003c\/p\u003e\n\u003ch2\u003eLong-focal-length imaging in a compact carbon tube.\u003c\/h2\u003e\n\u003cp\u003eThe StellaLyra 6-inch carbon-fibre Ritchey–Chrétien pairs a 153mm aperture with a 1370mm focal length. A fixed primary mirror and separate rear focuser form the basis of a compact telescope for a carefully assembled camera rig.\u003c\/p\u003e\n\u003cp\u003eChoose it for projects where you want a closer frame than a short-focal-length telescope provides, with the tube construction and accessory choices that suit your setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/stellalyra-6-f9-mcrf-carbon-rc-ota.jpg?v=1789723220\" alt=\"StellaLyra 6-inch f\/9 M-CRF carbon-fibre Ritchey-Chretien optical tube\" width=\"600\" height=\"600\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rc6c-panel\"\u003e\n\u003ch3\u003eWhat does the carbon version change?\u003c\/h3\u003e\n\u003cp\u003eThe carbon-fibre tube package has a published weight of 5.2kg with the supplied accessories. The equivalent metal 6-inch RC is listed at 5.61kg, while both share the same aperture and focal length.\u003c\/p\u003e\n\u003cp\u003eThe choice is about the tube construction and your overall equipment plan. Carbon fibre alone is not a promise of better stars or a reason to stop checking focus during a session. Keep room in the budget for the mount, camera connections and any appropriate correction optics.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rc6c-feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/stellalyra-6-f9-carbon-rc-detail-2.jpg?v=1789815914\" alt=\"Secondary mirror and internal baffles in StellaLyra 6-inch carbon RC\" width=\"600\" height=\"600\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003cdiv\u003e\n\u003ch3\u003eRC optics for a tighter view of the sky.\u003c\/h3\u003e\n\u003cp\u003eThe optical system uses hyperbolic primary and secondary mirrors, with internal baffles to control stray light. Its coma-corrected design differs from a Newtonian.\u003c\/p\u003e\n\u003cp\u003eUse a field-of-view planner with your camera and intended subjects before choosing. A smaller galaxy may benefit from closer framing, while a large nebula may need a mosaic. Sensor size determines framing, and pixel size, seeing and tracking influence how useful the resulting image scale will be.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rc6c-feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/stellalyra-6-f9-carbon-rc-detail-3.jpg?v=1789815926\" alt=\"Rotatable dual-speed Crayford focuser on StellaLyra 6-inch carbon RC\" width=\"600\" height=\"600\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003cdiv\u003e\n\u003ch3\u003eFocus without moving the primary mirror.\u003c\/h3\u003e\n\u003cp\u003eThe 2-inch dual-speed rotatable Crayford focuser handles focusing at the rear of the tube while the primary remains fixed. Coarse and fine controls let you approach focus and then refine it with short exposures.\u003c\/p\u003e\n\u003cp\u003eSecure the camera and check the adjustment with the imaging train in place. Support cables so they cannot pull on the focuser as the telescope moves. If you want autofocus, confirm the motor, coupling and bracket fit separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eUse the supplied extension rings to suit your camera.\u003c\/h3\u003e\n\u003cp\u003eTwo 25mm rings and one 50mm ring are included to provide focus extension. Your camera arrangement determines which combination is needed; fitting all three is not a universal setup instruction.\u003c\/p\u003e\n\u003cp\u003eIf adding an RC-compatible reducer or flattener, follow its specified sensor spacing as well as checking that the telescope reaches focus. Include adapters and filter hardware in your measurements, and record the finished arrangement so it can be reassembled consistently.\u003c\/p\u003e\n\u003cdiv class=\"rc6c-feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/stellalyra-6-f9-carbon-rc-detail-1.jpg?v=1789815902\" alt=\"StellaLyra 6-inch f\/9 carbon-fibre RC showing rear focuser and mounting rail\" width=\"600\" height=\"600\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003cdiv\u003e\n\u003ch3\u003eBalance the equipment behind the compact tube.\u003c\/h3\u003e\n\u003cp\u003eThe published tube length is 391mm, with a diameter of 193mm including end rings. A Vixen-style rail provides the mount connection.\u003c\/p\u003e\n\u003cp\u003eExtensions, a filter wheel and a camera move weight rearwards. Fit the complete imaging train before balancing, then check saddle travel and clearance around the mount. Add guiding equipment and cables to the payload calculation rather than selecting a mount on the bare telescope weight.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rc6c-panel\"\u003e\n\u003ch3\u003ePlan correction for the sensor you actually use.\u003c\/h3\u003e\n\u003cp\u003eComa correction does not mean every sensor will record a perfectly flat, sharp field without additional optics. Assess any reducer or flattener for the RC design, sensor size and mechanical connections in your proposed system.\u003c\/p\u003e\n\u003cp\u003eA Newtonian coma corrector is not an interchangeable solution for an RC. Send us the exact camera and accessory models so the combination can be checked before you buy adapters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eBuild a reliable alignment and tracking routine.\u003c\/h3\u003e\n\u003cp\u003eA short tube can still be demanding at a long focal length. Choose tracking and guiding equipment for your intended image scale and exposure lengths, and inspect short test frames before starting a long run.\u003c\/p\u003e\n\u003cp\u003eCheck collimation using an RC-appropriate method, particularly after transport. Avoid adjusting an already well-aligned system without evidence of a problem. When investigating uneven stars, separate focus, tilt, spacing, tracking and alignment checks, changing one factor at a time.\u003c\/p\u003e\n\u003ch3\u003eIncluded equipment\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eSupplied\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 tube, focuser and Vixen-style rail\u003c\/td\u003e\n\u003ctd\u003eTracking mount and tripod or pier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2-inch to 1.25-inch adapter\u003c\/td\u003e\n\u003ctd\u003eCamera, filter hardware and camera adapters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTwo 25mm and one 50mm extension rings\u003c\/td\u003e\n\u003ctd\u003eAny RC-compatible reducer or flattener\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinder mounting base\u003c\/td\u003e\n\u003ctd\u003eFinder, guiding and power equipment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eA finder, eyepieces and diagonal are not included.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOptical design \/ aperture\u003c\/th\u003e\n\u003ctd\u003eRitchey–Chrétien \/ 153mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eFocal length \/ ratio\u003c\/th\u003e\n\u003ctd\u003e1370mm \/ nominal f\/9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTube material\u003c\/th\u003e\n\u003ctd\u003eCarbon fibre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eFocusing\u003c\/th\u003e\n\u003ctd\u003eFixed primary; 2-inch dual-speed rotatable Crayford\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLength \/ outside diameter\u003c\/th\u003e\n\u003ctd\u003e391mm \/ 193mm including end rings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight with supplied accessories\u003c\/th\u003e\n\u003ctd\u003e5.2kg\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\u003eWill this frame targets differently from the metal 6-inch RC?\u003c\/summary\u003e\u003cp\u003eNo, with the same camera and optical accessories the shared focal length gives the same framing. Compare tube construction and the whole-system budget when choosing between them.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes it include a reducer?\u003c\/summary\u003e\u003cp\u003eNo. A reducer is an optional separate purchase. Check RC compatibility, sensor coverage, connections and spacing before adding one to the system.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan it be used for visual observing?\u003c\/summary\u003e\u003cp\u003eYes, with suitable eyepieces and an appropriate focus arrangement. Budget for those accessories and a mount separately. If visual use is your main priority, compare the other telescope types in the StellaLyra hub before deciding.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"rc6c-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=\"rc6c-links\"\u003e\n\u003ca href=\"\/pages\/stellalyra\"\u003eCompare the StellaLyra range\u003c\/a\u003e\u003ca href=\"mailto:contact@darkclearskies.co.uk?subject=StellaLyra%206-inch%20carbon%20RC\"\u003eDiscuss your camera setup\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"StellaLyra","offers":[{"title":"Default Title","offer_id":55665192599928,"sku":null,"price":549.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/stellalyra-6-f9-mcrf-carbon-rc-ota.jpg?v=1789723220","url":"https:\/\/www.darkclearskies.co.uk\/products\/stellalyra-6-f-9-m-crf-ritchey-chretien-carbon-fibre-telescope-ota","provider":"Dark Clear Skies ","version":"1.0","type":"link"}