{"product_id":"takahashi-sd-ring-for-fs-60c-multi-flattener","title":"Takahashi SD Ring for FS-60C Multi-Flattener","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe SD Ring is the spacing adapter Takahashi publishes for fitting the \u003ca href=\"\/products\/takahashi-fc-fs-multi-flattener-1-04x-field-flattener\"\u003eFC\/FS Multi-Flattener 1.04x\u003c\/a\u003e to the FS-60C. It threads M55.9 x 0.75 and adds a 17.5 mm light path — the figures Takahashi lists in its accessory ring table for this part.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is what you need if you own an FS-60C and are setting up the FC\/FS Multi-Flattener 1.04x for imaging. It is a spacing part, not a standalone accessory.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM55.9 x 0.75 thread:\u003c\/strong\u003e the interface Takahashi publishes for this ring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17.5 mm light path:\u003c\/strong\u003e the length it adds to the imaging train ahead of the flattener.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurpose-built for the FS-60C:\u003c\/strong\u003e distinct from the CA-60C ring used on the FS-60CB.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003eImaging setup on the FS-60C\u003c\/strong\u003e with the FC\/FS Multi-Flattener 1.04x.\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi's own accessory ring table notes that the SD Ring cannot be threaded onto the female port of the Camera Angle Adjuster S — the same restriction applies to the M55.9 Extension Tube L30. If your train includes the Camera Angle Adjuster S, check the fit with us before ordering. Full spacing figures for the FC and FS line are in the \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt does not work alone.\u003c\/strong\u003e The SD Ring only sets spacing for the Multi-Flattener 1.04x on the FS-60C — the flattener itself is a separate purchase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot for use with the Camera Angle Adjuster S\u003c\/strong\u003e — Takahashi's own documentation flags this combination as incompatible. If that is part of your train, send us the details and we will confirm an alternative.\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 directly into the imaging train ahead of the flattener at the published M55.9 x 0.75 interface.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this the same as the CA-60C ring?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. The CA-60C is matched to the FS-60CB; the SD Ring is the part Takahashi publishes for the FS-60C.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it with the Camera Angle Adjuster S?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTakahashi's documentation says no — the thread will not engage the Camera Angle Adjuster S's female port. Send us your setup and we will work out the right combination.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: an M55.9 x 0.75, 17.5 mm spacing ring that sets up the FC\/FS Multi-Flattener 1.04x correctly on the FS-60C.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047107547247,"sku":"TAK-TKA20583","price":54.34,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tka20583-1.jpg?v=1786913864","url":"https:\/\/ontariotelescope.com\/products\/takahashi-sd-ring-for-fs-60c-multi-flattener","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}