{"product_id":"takahashi-sky-90-short-2-adapter-25mm","title":"Takahashi Sky-90 Short 2\" Adapter 25mm","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Short 2\" Adapter (Sky90) is Takahashi's 50.8 Adapter for the Sky-90, fitting a 2\" eyepiece or camera clamp with an M55.9 x 0.75 female thread. It carries a published light path of 25 mm — the amount it contributes to your optical train, not its physical length end to end.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you own a Sky-90, FOA-60, or FC-76DS and need a 2\" clamp on the camera-side thread for eyepieces or 2\" imaging accessories.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2\" compression clamp:\u003c\/strong\u003e secures via two M5 screws on the rear of the ring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM55.9 x 0.75 female thread:\u003c\/strong\u003e the tube-side connection published in Takahashi's catalog.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25 mm published light path:\u003c\/strong\u003e a fixed, known contribution to your back focus total.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eAccepting 2\" eyepieces, diagonals, or imaging accessories on the Sky-90, FOA-60, or FC-76DS.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eFits the Sky-90, FOA-60, and FC-76DS. On the FOA-60Q and FOA-60, Takahashi installs it using the TKP35001 or TKP28001 adapter rather than direct threading. A longer variant, TKA21110, is also available with a different integrated light path where more spacing is needed. The \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e tabulates every Takahashi adapter's light path alongside each telescope's back focus target, worth checking against the rest of your imaging train.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFOA-60 and FOA-60Q need an intermediate adapter:\u003c\/strong\u003e on those two models this ring installs through the TKP35001 or TKP28001 adapter rather than threading straight onto the drawtube. Send us your exact telescope model and we will confirm which parts you need together.\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 onto the drawtube and the 2\" clamp is secured with two M5 screws, with no further adjustment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFitting 2\" eyepieces, diagonals, or camera accessories to the Sky-90, FOA-60, or FC-76DS.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it fit the FOA-60 directly?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOn the FOA-60 and FOA-60Q it installs through the TKP35001 or TKP28001 adapter rather than threading straight on — send us your setup and we will confirm the parts you need.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 25 mm light-path, M55.9 female 2\" clamp for the Sky-90, FOA-60, and FC-76DS. Confirm the FOA-60\/FOA-60Q intermediate adapter with us before ordering if that is your telescope.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047911444591,"sku":"TAK-TKP35110","price":111.54,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tkp35110-1.jpg?v=1786936457","url":"https:\/\/ontariotelescope.com\/products\/takahashi-sky-90-short-2-adapter-25mm","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}