{"product_id":"takahashi-fs-60cb-visual-adapter","title":"Takahashi FS-60CB Visual Adapter","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FS-60CB Visual Adapter is Takahashi's dual-thread conversion ring for the FS-60 series, stepping either an M55.9 x 0.75 or an M52 x 0.75 telescope-side thread down to M43 x 0.75 for visual accessories. Takahashi publishes a 10 mm light path and a 35 g weight for the part.\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 building a visual train on an FS-60CB or similar M55.9\/M52-threaded Takahashi refractor and need to step down to the M43 visual-accessory standard.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual telescope-side thread:\u003c\/strong\u003e M55.9 x 0.75 female or M52 x 0.75 female, covering both common Takahashi drawtube standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM43 x 0.75 female output:\u003c\/strong\u003e Takahashi's standard visual-accessory thread.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e35 g:\u003c\/strong\u003e the published weight for the part.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTakahashi part TKP20005\u003c\/strong\u003e — listed as \"Visual adapter n°10.\"\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eUse it to convert an FS-60CB or comparably threaded Takahashi drawtube down to M43 for a diagonal, eyepiece holder, or other M43-standard visual accessory.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TKP20005_schema.png?v=1786936378\" alt=\"Dimensional schema of the Takahashi FS-60CB Visual Adapter TKP20005 showing M55.9, M52 and M43 thread engagement\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003cp\u003eTakahashi publishes this adapter's light path as 10 mm, and its own diagram shows that figure applies through the M52 side — the M55.9 side runs 15 mm instead, so the number that applies depends on which thread engages your telescope. This is what the adapter contributes to your optical train, not a caliper measurement of the ring itself. The \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e tabulates this alongside the FS-60CB's back focus target.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eThe light path depends on which thread you engage.\u003c\/strong\u003e Takahashi publishes 10 mm through the M52 side and 15 mm through the M55.9 side. If you need the precise figure for your build, send us your telescope model and we will confirm which thread — and which light path — applies.\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 directly onto the drawtube on whichever side matches your telescope's thread.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eConverting an FS-60CB-family M55.9 or M52 drawtube down to Takahashi's M43 visual-accessory thread.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it work for imaging as well as visual use?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt carries no optics, so it works mechanically the same way in an imaging train, though Takahashi designates it a visual adapter.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 35 g dual-thread ring that steps an FS-60CB-family drawtube down to M43, with a published light path of 10 mm through its M52 side.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047922192495,"sku":"TAK-TKP20005","price":77.22,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tkp20005_3.jpg?v=1786936672","url":"https:\/\/ontariotelescope.com\/products\/takahashi-fs-60cb-visual-adapter","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}