{"product_id":"takahashi-visual-coupling-s-adapter","title":"Takahashi Visual Coupling S Adapter","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Visual Coupling S Adapter is the coupling ring Takahashi ships as standard equipment on several of its refractors — a short, purely mechanical ring with a published 10 mm light path and no lens or mirror of its own. It's the shortest coupling in the M55.9 accessory family.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you're replacing a lost or damaged coupling, or building a second visual train and need the exact part Takahashi supplies with the telescope.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoupling (S) — Takahashi part TKP00103:\u003c\/strong\u003e the same coupling supplied as standard equipment on Takahashi refractors such as the FSQ-85EDX.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10 mm light path:\u003c\/strong\u003e the shortest step in Takahashi's M55.9 coupling lineup, sized to sit right at the drawtube with minimal added length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid one-piece construction:\u003c\/strong\u003e nothing to adjust or align.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eUse it to join a diagonal, extension tube, or eyepiece holder into Takahashi's 50.8 mm accessory sleeve system on telescopes that ship with this coupling as standard equipment.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIt mates with Takahashi's collimating-scope-sleeve accessory chain — the same system used on the FSQ-85EDX and other Takahashi refractors that ship with this coupling. Its published 10 mm light path is what it adds to your optical train rather than a figure you'd get from measuring the part itself with calipers. The \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e lists this figure alongside the back focus target for each Takahashi telescope, so you can check it against your build before ordering.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — it threads straight into the accessory chain it was designed for.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eReplacing or duplicating the coupling Takahashi supplies as standard equipment on several of its refractors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it change magnification or add optical power?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — it's a mechanical spacer only, with a published 10 mm light path.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 10 mm coupling that's standard equipment on several Takahashi refractors. If you're not certain it's the exact coupling your telescope shipped with, send us your model and we'll confirm the fit.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047916327023,"sku":"TAK-TKP00103","price":58.63,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tsp0030_2_6.jpg?v=1786936575","url":"https:\/\/ontariotelescope.com\/products\/takahashi-visual-coupling-s-adapter","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}