{"product_id":"takahashi-98mm-to-wide-mount-adapter","title":"Takahashi 98mm to Wide Mount Adapter","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi calls this the Coupling (TW) for the CCA-250, part TKP86003 — the piece that connects the 98 mm accessory family to Takahashi's Wide-Mount T-ring camera system. Takahashi publishes a light path length of 34.2 mm for it — what it adds to the train, not its physical size — and that's enough spacing to plan around if you're already close to a flattener's backfocus target.\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 running a CCA-250-based 98 mm accessory train and want to move to Takahashi's Wide-Mount T-ring system for your camera connection.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e98 mm-thread telescope side:\u003c\/strong\u003e part of the CCA-250 accessory family.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide-Mount camera side:\u003c\/strong\u003e steps down to Takahashi's Wide-Mount ring and T-ring system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e34.2 mm light path length:\u003c\/strong\u003e Takahashi's published figure for this coupling's contribution to the optical train.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnecting a Wide-Mount camera train\u003c\/strong\u003e to a 98 mm CCA-250-based accessory chain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitching a CCA-250 setup\u003c\/strong\u003e from its native camera coupling to the Wide-Mount T-ring system.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart of Takahashi's CCA-250 \/ 98 mm accessory family\u003c\/strong\u003e on the telescope side, and the Wide-Mount T-ring system on the camera side.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdds 34.2 mm to the optical path.\u003c\/strong\u003e Our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e lists it alongside the back focus figures for each telescope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurely mechanical\u003c\/strong\u003e — no optical element, no change to focal length or focal ratio.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTakahashi doesn't spell out the exact thread callout on each face,\u003c\/strong\u003e beyond its role connecting the 98 mm and Wide-Mount systems. Send us your full accessory stack and we'll confirm the fit before you order.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt adds 34.2 mm to the optical path,\u003c\/strong\u003e worth checking against your focuser's inward travel.\u003c\/li\u003e\n\u003c\/ul\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 between the two accessory families like any other coupling, with nothing to align.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does it add to my optical train?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e34.2 mm, per Takahashi's published figure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does it connect?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe 98 mm CCA-250 accessory family on one side and Takahashi's Wide-Mount T-ring camera system on the other.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it include any optics?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It's a mechanical adapter only.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: Takahashi's 98 mm-to-Wide-Mount coupling — 34.2 mm of light path, connecting a CCA-250 accessory train to the Wide-Mount T-ring camera system.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047926190191,"sku":"TAK-TKP86003","price":234.52,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tkp86003_2_6.jpg?v=1786936699","url":"https:\/\/ontariotelescope.com\/products\/takahashi-98mm-to-wide-mount-adapter","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}