{"title":"Takahashi Adapters","description":"\u003cp\u003eTakahashi camera adapters, CA rings, couplings, extension tubes and visual adapters. These are the mechanical parts that set the metal back distance between a Takahashi telescope, its corrector and your camera or diagonal. Each Takahashi optical train has a published system chart naming the exact parts and spacing it needs.\u003c\/p\u003e","products":[{"product_id":"takahashi-extender-q-2-inch-adapter","title":"Takahashi Extender-Q 2\" Adapter","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 2-inch adapter that fits the visual section of the Takahashi Extender-Q, opening the train up from Takahashi's M42 x 0.75 fitting to a standard 50.8 mm barrel. With it in place the Extender-Q accepts 2-inch star diagonals and 2-inch eyepieces — the wide-field oculars that will not fit a 1.25-inch train at all.\u003c\/p\u003e\u003cp\u003eTakahashi lists it as the 50.8 Adapter (EX-Q), part TKA00596, with a published light path length of 39.5 mm. It is machined from black-anodized aluminium and retains the accessory with two thumbscrews rather than one, which is what keeps a heavy diagonal square rather than letting it tilt on a single contact point.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is the part you need if you use the Extender-Q visually and own 2-inch eyepieces or a 2-inch diagonal. The Extender-Q's own visual section does not take them directly; this adapter is what bridges it.\u003c\/p\u003e\u003cp\u003eIt has no application in an imaging train — a camera connects to the Extender-Q through the photographic path, not through a 2-inch visual barrel.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM42 x 0.75 female telescope side:\u003c\/strong\u003e threads directly onto the Extender-Q's visual section.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-inch (50.8 mm) accessory side:\u003c\/strong\u003e takes standard 2-inch diagonals and eyepieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e39.5 mm light path length:\u003c\/strong\u003e Takahashi's published figure for what this adapter contributes to the optical train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual thumbscrews:\u003c\/strong\u003e two contact points hold a heavy diagonal square instead of letting it pivot on one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack-anodized aluminium:\u003c\/strong\u003e non-reflective inside the light path and light enough not to shift focuser balance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo-play fit:\u003c\/strong\u003e machined to Takahashi's mechanical tolerance, so a loaded diagonal does not rock in the seat.\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\u003eUsing 2-inch wide-field eyepieces\u003c\/strong\u003e behind an Extender-Q on a Takahashi refractor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting a 2-inch star diagonal\u003c\/strong\u003e where the extra optical path and larger clear aperture are wanted.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpgrading an existing Extender-Q setup\u003c\/strong\u003e from a 1.25-inch to a 2-inch visual train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHolding heavier oculars securely\u003c\/strong\u003e where a single-screw fitting would allow tilt.\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\u003eFits the Takahashi Extender-Q visual section\u003c\/strong\u003e via M42 x 0.75 female thread. It is designed for that fitting specifically and is not a universal 2-inch adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccessory side:\u003c\/strong\u003e 2-inch (50.8 mm), holding 2-inch diagonals and eyepieces with two thumbscrews.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLight path length is 39.5 mm.\u003c\/strong\u003e That is the figure to add when you are checking a train against your focus travel. Our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e lists the light path length of every Takahashi adapter alongside the back focus figures for each telescope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical only.\u003c\/strong\u003e There is no optical element in it — it does not correct, magnify or reduce.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you are not sure whether your eyepieces will still reach focus with this in the train, send us your telescope, Extender-Q configuration and eyepiece list and we will work it out with you.\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 requires an Extender-Q.\u003c\/strong\u003e The adapter threads onto that product's visual section and is not a standalone telescope accessory. If you do not own one, tell us what you are trying to connect and we will find the right part.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt is a mechanical adapter.\u003c\/strong\u003e No glass, no correction, no change to focal length or focal ratio.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual use only.\u003c\/strong\u003e Imaging trains take the photographic path through the Extender-Q instead.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt adds 39.5 mm to the optical path.\u003c\/strong\u003e On tubes with limited inward travel that figure is worth checking against the back focus guide before ordering — and we will check a specific combination for you.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-inch accessories are heavier.\u003c\/strong\u003e The dual thumbscrews are there for that reason, and the fit is machined without play, so a loaded diagonal sits square.\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 onto the Extender-Q visual section, and the diagonal or eyepiece slides in and is held by the two thumbscrews. There is nothing to align.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need an Extender-Q to use it?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. It is made for that product's M42 x 0.75 visual section. Tell us what you are connecting and we will confirm the right adapter if you do not have one.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it change magnification or focal length?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It is a mechanical adapter with no optical element. The Extender-Q itself supplies the 1.6x factor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does it add to my optical train?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e39.5 mm, per Takahashi's published figure. The back focus guide on this site lists it alongside every other Takahashi adapter so you can add up a train.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it with 1.25-inch eyepieces?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eWith a 2-inch to 1.25-inch reducing adapter, yes. We stock those.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it made of?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBlack-anodized aluminium, machined to Takahashi's standard tolerance so the seat holds a loaded diagonal without play.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: Takahashi's 50.8 Adapter for the Extender-Q — M42 x 0.75 in, 2-inch out, 39.5 mm of light path, held on two thumbscrews so a heavy ocular sits square. Purely mechanical, and it is what lets a 2-inch diagonal onto an Extender-Q train.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54046972280943,"sku":"TAK-TKA00596","price":111.54,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tka00596_1_2400x2400_1708d20a-66db-4de6-8917-07971fcc80a8.jpg?v=1786907918"},{"product_id":"takahashi-toa-130-ca-ring","title":"Takahashi TOA-130 CA Ring","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe CA Ring (TOA-130) is a small camera-adapter ring from Takahashi built for the TOA-130 refractor's camera-side connection. It sits in the optical train between the drawtube and your next fitting, giving you a defined point to build out an imaging or visual chain on this telescope.\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 TOA-130NS or TOA-130NFB and are assembling or extending the camera-side adapter chain for either imaging or eyepiece use.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt for the TOA-130 family:\u003c\/strong\u003e machined to Takahashi's TOA-130 camera-side interface rather than a universal fitting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact single-purpose ring:\u003c\/strong\u003e adds one connection point to the train without introducing unnecessary length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminum construction with black finish:\u003c\/strong\u003e matches the rest of the TOA-130 accessory line.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eCamera-train assembly and accessory mounting on the TOA-130 refractor, for both imaging setups and visual accessory chains.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eFits the TOA-130 optical tube family (TOA-130NS, TOA-130NFB). Because the total length of everything between the TOA-130's drawtube and your camera or eyepiece determines focus and, for imaging, corner sharpness, it is worth checking this ring's contribution against the rest of your train using the \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e, which tabulates every Takahashi adapter's light path alongside each telescope's back focus target.\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 is a single ring with one connection point on each side, so there is nothing to align or adjust beyond threading it into place.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eExtending or adapting the TOA-130's camera-side connection for the next accessory in your imaging or visual chain.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it work for both visual and imaging use?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — it is a mechanical ring with no optical elements, so it carries through either a visual or an imaging chain equally.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA compact, TOA-130-specific connection ring for building out your camera or eyepiece train.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047905054831,"sku":"TAK-TKA31202","price":91.52,"currency_code":"CAD","in_stock":false}]},{"product_id":"takahashi-fs-60cb-auxiliary-ring-57mm","title":"Takahashi FS-60CB Auxiliary Ring 57mm","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Auxiliary Ring (FS-60CB) is a Takahashi adapter ring built for the FS-60CB refractor's camera-side thread. It carries a published light path of 57 mm — the amount it adds to your optical train, not its physical length end to end — with an M52 x 0.75 male thread on one side and an M55.9 x 0.75 female thread on the other.\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 an FS-60CB and need to extend or adapt its camera-side connection to reach a specific back focus or fit an additional accessory in the train.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e57 mm published light path:\u003c\/strong\u003e a fixed, known contribution to your back focus total.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM52 x 0.75 male to M55.9 x 0.75 female threads:\u003c\/strong\u003e matches the FS-60CB's own camera-side interface on one end.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-piece aluminum ring:\u003c\/strong\u003e no moving parts to maintain.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eExtending the FS-60CB's camera-side train for imaging, or adapting it to accept a further eyepiece or coupling for visual use.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eBuilt for the FS-60CB. Because 57 mm is a meaningful fraction of most imaging back-focus budgets, it is worth checking this figure against your camera and any flattener or reducer already in the train — 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.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eLight path adds up quickly on a short-focus scope:\u003c\/strong\u003e on the FS-60CB, 57 mm is a large share of the available back focus budget. Send us your full camera and accessory chain and we will work out the total spacing with you.\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 on at both ends with no adjustment involved.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAdding a defined 57 mm of light path to the FS-60CB's camera-side train, most often to reach a target back focus for a flattener or camera.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it change what the FS-60CB can be used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — it is a mechanical spacer with no optical elements, so it works the same for visual or imaging use.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 57 mm light-path ring for the FS-60CB, with M52 male and M55.9 female threads on either end. It is worth confirming against the rest of your train before ordering.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047908266095,"sku":"TAK-TKP20001","price":102.96,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tkp20001.jpg?v=1786936369"},{"product_id":"takahashi-cca-250-visual-adapter-17mm","title":"Takahashi CCA-250 Visual Adapter 17mm","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe CCA-250 Visual Adapter is a Takahashi coupling with a published light path of 17 mm — the amount it contributes to your optical train, not its physical length end to end. Takahashi lists it as compatible with the CCA-250, FSQ-85EDX, FSQ-106ED, FC-100DL, and FC-100DF.\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 one of its listed telescopes and need a compact visual coupling to complete an eyepiece or accessory connection.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 mm published light path:\u003c\/strong\u003e a small, precise addition to a visual or imaging train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-scope compatibility:\u003c\/strong\u003e a single part number covers the CCA-250, FSQ-85EDX, FSQ-106ED, FC-100DL, and FC-100DF.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid metal coupling:\u003c\/strong\u003e pairs with Takahashi's Coupling S and Coupling L rings for extended reach.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eCompleting a visual eyepiece connection or an intermediate coupling step in an imaging train on any of its compatible telescopes.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eCompatible with the CCA-250, FSQ-85EDX, FSQ-106ED, FC-100DL, and FC-100DF. The 17 mm figure is worth adding into your full back-focus total alongside any flattener, reducer, or filter wheel already in the chain — 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.\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 is a single coupling with no adjustment, though confirming the thread match on both sides is worth doing before you order the rest of your train.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAdding a defined 17 mm connection point in a visual or imaging chain on the CCA-250, FSQ-85EDX, FSQ-106ED, FC-100DL, or FC-100DF.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan it be combined with Takahashi's Coupling S and Coupling L?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — Takahashi pairs this adapter with the Coupling S and Coupling L rings when more reach is needed.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 17 mm visual coupling for the CCA-250 and its compatible FSQ and FC-100 telescopes.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047909773423,"sku":"TAK-TKP86005","price":107.25,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/takahashi-m54-m43-adapter-tkp86005-astronomy-plus-1.jpg?v=1786936398"},{"product_id":"takahashi-fc-100d-f-50-8-ad-adapter-m64","title":"Takahashi FC-100D F 50.8 AD Adapter M64","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe F 50.8 AD Adapter converts the rear thread of the FC-100DL and FC-100DF onto a male M64 x 0.75 thread, so these telescopes can accept accessories built for Takahashi's older M64 accessory system. Takahashi publishes a 15 mm light path for it — 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 an FC-100DL or FC-100DF and want to run an M64 reducer or another legacy M64 accessory on it.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear-thread to M64 conversion:\u003c\/strong\u003e bridges the FC-100DL\/DF's native thread to Takahashi's older M64 system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e15 mm published light path:\u003c\/strong\u003e a known, fixed contribution to your back focus total.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid aluminum, black anodized:\u003c\/strong\u003e keeps thread alignment consistent across mounts and removals.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eRunning an M64 reducer or another older M64-thread accessory on an FC-100DL or FC-100DF, for either visual or imaging use.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eBuilt for the FC-100DL and FC-100DF. The 15 mm light path is worth adding to your full back-focus total alongside the M64 accessory you are pairing it with — 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.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIt is specific to the M64 accessory generation:\u003c\/strong\u003e it exists to bridge to older M64 gear, so it has no role in a train built entirely from Takahashi's current thread standards. Send us your accessory list and we will confirm whether you need it.\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 rear of the FC-100DL or FC-100DF and presents a male M64 thread on the other side, with nothing to adjust.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eLetting an FC-100DL or FC-100DF accept a reducer or other accessory built for Takahashi's older M64 thread standard.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it work for visual use as well as imaging?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — it is a mechanical thread adapter, so it carries through a visual or imaging train equally.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 15 mm light-path adapter that puts an M64 male thread on the back of an FC-100DL or FC-100DF, for running older M64-system accessories.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047910821999,"sku":"TAK-TKP19001","price":107.25,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tkp19001_458x483_bc4dd5fc-8853-4e7a-86d7-9d58037634fb.jpg?v=1786936426"},{"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"},{"product_id":"takahashi-toa-130-tsa-dslr-wide-mount-camera-adapter","title":"Takahashi TOA-130\/TSA DSLR Wide Mount Camera Adapter","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe DSLR Wide Mount Camera Adapter is Takahashi's CA35 (TSA-102) ring, threading M72 x 1.0 male on the telescope side to M54 x 0.75 female on the camera side. Takahashi states a metal back distance of 28 mm for it — 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 shoot with a TOA-130, TSA, or FC\/FS series telescope and need the M54 interface a Wide Mount DSLR T-ring connects to.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM72 x 1.0 male to M54 x 0.75 female:\u003c\/strong\u003e bridges the telescope's drawtube thread to Takahashi's Wide Mount camera system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e28 mm metal back distance:\u003c\/strong\u003e a fixed figure to build your back-focus total around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack-finished metal ring:\u003c\/strong\u003e matches Takahashi's other camera-side adapters.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eMounting a DSLR through a Wide Mount T-ring on a TOA-130, TSA, or FC\/FS series telescope for prime-focus imaging.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eFits TOA-130, TSA, and FC\/FS series telescopes with an M72 x 1.0 male drawtube thread, and connects on the camera side to Takahashi's M54 x 0.75 Wide Mount DSLR T-ring system. The 28 mm figure is worth adding to your full back-focus total alongside your camera body and any flattener already in the chain — 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.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIt needs a matching Wide Mount T-ring:\u003c\/strong\u003e this adapter presents the M54 interface but does not include the camera-specific T-ring itself. Send us your camera brand and we will confirm the matching Wide Mount T-ring to pair with it.\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 on one side and accepts the Wide Mount T-ring on the other, with no adjustment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eConnecting a DSLR, through a Wide Mount T-ring, to a TOA-130, TSA, or FC\/FS series telescope for prime-focus imaging.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it include the camera T-ring?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — it is the telescope-side coupling only. The Wide Mount T-ring for your specific camera brand is a separate part.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eAn M72-to-M54 camera adapter ring with a 28 mm metal back distance, connecting TOA-130, TSA, and FC\/FS telescopes to Takahashi's Wide Mount DSLR T-ring system.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047914000495,"sku":"TAK-TKA23201","price":114.4,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tca1030_2_6.jpg?v=1786936486"},{"product_id":"takahashi-1-25-compression-ring-eyepiece-adapter-29mm","title":"Takahashi 1.25\" Compression Ring Eyepiece Adapter 29mm","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe 1.25\" Compression Ring Adapter is Takahashi's Eyepiece Adapter (31.7), threading M36.5 x 1.0 male into the optical train and opening a 1.25\" compression-ring seat for eyepieces and other 1.25\" accessories. It carries a published light path of 29 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 your Takahashi telescope ends in an M36.5 thread and you want a secure, compression-ring 1.25\" seat rather than a set-screw fitting.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25\" compression ring:\u003c\/strong\u003e clamps evenly around the eyepiece or accessory barrel rather than pinching it at one point.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM36.5 x 1.0 male thread:\u003c\/strong\u003e the tube-side connection published in Takahashi's catalog.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e29 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 1.25\" eyepieces, Barlows, filters, or small imaging accessories on any Takahashi telescope ending in an M36.5 thread.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThreads onto any M36.5 x 1.0 male-compatible Takahashi drawtube or coupling. For an imaging train, the 29 mm figure is worth adding to your total back focus — 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.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIt is a visual-format fitting:\u003c\/strong\u003e the 1.25\" barrel it opens is sized for eyepieces and small 1.25\" accessories rather than a full-frame imaging sensor. Send us your setup if you are unsure whether your camera fits within a 1.25\" barrel.\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 on at the tube side and the compression ring tightens with a single screw around whatever 1.25\" accessory is inserted.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOpening a secure 1.25\" seat for eyepieces, Barlows, filters, or small cameras on an M36.5-thread Takahashi telescope.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is a compression ring different from a set-screw adapter?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA compression ring clamps evenly around the full circumference of the barrel rather than pressing at a single point, which is gentler on the barrel finish.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 29 mm light-path, M36.5 male adapter that opens a 1.25\" compression-ring seat for eyepieces and small accessories.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047914655855,"sku":"TAK-TKP00101","price":127.27,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/takahashi-eyepiece-adapter-tkp00101-astronomy-plus-1.jpg?v=1786936514"},{"product_id":"takahashi-cca-250-98mm-spacer-ring-32-5mm","title":"Takahashi CCA-250 98mm Spacer Ring 32.5mm","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe 98mm Spacer Ring is a Takahashi M98 x 1.0 extension built for the CCA-250, most often paired with the TKA86580L super reducer. Takahashi publishes a 32.5 mm light path for it — 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 run a CCA-250 with the TKA86580L super reducer and need to add 32.5 mm of spacing to reach your target back focus.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM98 x 1.0 thread:\u003c\/strong\u003e matches the CCA-250 and Mewlon CRS body accessory family.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e32.5 mm published light path:\u003c\/strong\u003e a fixed, known contribution to your back focus total.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnects through to the camera rotator:\u003c\/strong\u003e pairs with the TKP86003 adapter for rotator attachment.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eAdding spacing in a CCA-250 imaging train that uses the TKA86580L super reducer, ahead of the camera rotator.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eBuilt for the CCA-250 with the TKA86580L super reducer, and connects to the camera rotator via the TKP86003 adapter. The 32.5 mm figure is worth adding to your full back-focus total alongside the reducer and camera — 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.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIt is a fixed-length spacer, not adjustable:\u003c\/strong\u003e if 32.5 mm does not land your train at the CCA-250's reducer back-focus target, a different-length ring is the fix rather than trimming this one. Send us your full CCA-250 imaging chain and we will work out the right combination with you.\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 in between the reducer and rotator adapter with no adjustment involved.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAdding a fixed 32.5 mm of spacing in a CCA-250 imaging train built around the TKA86580L super reducer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it work with the CCA-250's visual accessories too?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is a mechanical spacer with no optical elements, so it carries through equally in an imaging or visual chain, provided the M98 thread on both sides lines up.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 32.5 mm M98 spacer ring for the CCA-250, built to work with the TKA86580L super reducer and camera rotator.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047915311215,"sku":"TAK-TKP86002","price":128.7,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/takahashi-m98-extension-tube-32-5mm-tkp86002-astronomy-plus-1.jpg?v=1786936543"},{"product_id":"takahashi-m55-9-extension-tube-l30","title":"Takahashi M55.9 Extension Tube L30","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe M55.9 Extension Tube L30 threads directly into the M55.9 x 0.75 accessory system shared across several Takahashi refractors. It carries no optics of its own — its whole job is moving a downstream accessory 30 mm further from the focuser, in one fixed step.\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 assembling a visual or imaging train on a Takahashi scope with an M55.9 x 0.75 drawtube thread and you need to add spacing without introducing a second reducer or flattener.\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 matches the drawtube thread used on several Takahashi refractor accessory chains.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e30 mm light path:\u003c\/strong\u003e among the longer single spacers Takahashi offers on this thread, useful when a shorter ring won't close the gap to a flattener's backfocus target.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid metal construction:\u003c\/strong\u003e a single-piece spacer with no moving parts and nothing to align.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eUse it to fine-tune spacing in an M55.9 visual or camera train — reaching a flattener's specified backfocus, for example, or adding clearance for a filter wheel or off-axis guider that would otherwise sit too close to the focuser.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIt threads into any Takahashi accessory using the M55.9 x 0.75 standard. The published 30 mm is what it adds to your optical train, not its physical length measured end to end with calipers — the two numbers differ because of how far the threads seat into the mating parts on each side. The \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e tabulates this figure alongside the back focus target for every Takahashi telescope, so you can work out whether you need it before you order.\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 into the M55.9 accessory chain with no adjustment to make.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAdding a fixed 30 mm of spacing to an M55.9 visual or imaging train.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it work for both visual and imaging setups?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — it's a mechanical spacer with no optical element, so it works the same way in either train.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eAn M55.9 x 0.75 spacer that adds 30 mm to your optical train. If you're not sure whether this is the spacing figure you need, send us your current train and telescope model and we'll work it out with you.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047915868271,"sku":"TAK-TKA18006","price":45.76,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/screenshot2024-09-18at120604pm_600x_b18d297c-b696-4412-a5fe-7f166c303f2b.jpg?v=1786936561"},{"product_id":"takahashi-cca-250-98mm-ext-aux-ring","title":"Takahashi CCA-250 98mm EXT AUX Ring","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe 98mm EXT AUX Ring is a Takahashi M98 extension ring built for the CCA-250's camera train. It connects to the camera rotator through the TKA82595 connector, and the telescope-side M98 sleeves attach to it through the TKA86204 adapter.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you run a CCA-250 and need an additional M98 extension point between the telescope's M98 sleeves and the camera rotator.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM98 thread family:\u003c\/strong\u003e matches the CCA-250's own accessory ring system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnects to the camera rotator:\u003c\/strong\u003e pairs with the TKA82595 connector on the camera side.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnects to the telescope's M98 sleeves:\u003c\/strong\u003e pairs with the TKA86204 adapter on the telescope side.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eExtending a CCA-250 imaging train between its M98 telescope-side sleeves and the camera rotator.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eBuilt for the CCA-250, using the TKA82595 connector on the camera-rotator side and the TKA86204 adapter on the telescope side. 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 and is a good starting reference for the rest of your CCA-250 chain.\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 connects between the TKA86204 telescope-side adapter and the TKA82595 rotator connector with no adjustment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eExtending the CCA-250's M98 camera train between the telescope-side sleeves and the camera rotator.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it come with the TKA82595 or TKA86204 parts?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — those are the connector and adapter it pairs with on either side, and are separate parts.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eAn M98 extension ring for the CCA-250's camera train, bridging the telescope-side sleeves and camera rotator.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047916294255,"sku":"TAK-TKA86596","price":120.12,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/takahashi-m98-extension-tube-for-cca-250-tka86596-astronomy-plus-1.jpg-2.jpg?v=1786936570"},{"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"},{"product_id":"takahashi-98mm-rd-ext-33-2mm-adapter","title":"Takahashi 98mm RD-EXT 33.2mm Adapter","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is Takahashi's 98mm RD-EXT adapter, part TKA86205, built to the M98 thread Takahashi uses on its CCA-250 camera angle system and related Mewlon-250CRS accessories. Takahashi publishes a light path length of 33.2 mm for it — what it adds to the train, not its physical size — and at that length it's a meaningful spacing step in a 98 mm accessory chain, not just a coupling ring.\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 assembling or extending a Takahashi 98 mm-thread accessory train — typically behind a CCA-250 camera angle adjuster — and need the 33.2 mm spacing step it provides.\u003c\/p\u003e\u003cp\u003eOn its own it doesn't do much: it's one link in a larger 98 mm-thread chain, not a stand-alone camera or eyepiece adapter.\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 family:\u003c\/strong\u003e built to Takahashi's M98 interface, shared with the CCA-250 camera angle system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e33.2 mm light path:\u003c\/strong\u003e Takahashi's published figure for what this ring contributes to the optical train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurely mechanical:\u003c\/strong\u003e a spacer\/coupling ring, with no optical element of its own.\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\u003eExtending a CCA-250 or Mewlon-250CRS camera angle train\u003c\/strong\u003e by the published 33.2 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilling a specific spacing gap\u003c\/strong\u003e in a 98 mm-thread accessory chain.\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 the 98 mm (M98) Takahashi accessory family,\u003c\/strong\u003e the same thread standard used on the CCA-250 camera angle adjuster and its couplings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdds 33.2 mm to the optical train\u003c\/strong\u003e — the figure to check against your total spacing. Our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e covers backfocus figures for Takahashi telescopes and their adapters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurely mechanical\u003c\/strong\u003e — no glass, no reduction, no correction.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSend us the rest of your 98 mm accessory chain — CCA-250, couplings and camera — and we'll confirm exactly where this ring fits and whether it's the spacing step you need.\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's a mechanical spacer,\u003c\/strong\u003e not an optical corrector — it doesn't change focal length or focal ratio.\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's a threaded ring that installs like any other coupling in the 98 mm accessory family. There's nothing to align or adjust.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does it add to my optical train?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e33.2 mm of light path, per Takahashi's published figure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it work with any Takahashi telescope?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt's built to the 98 mm thread standard shared by the CCA-250 camera angle system. Send us your setup and we'll confirm compatibility.\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: a 98 mm-thread spacer that adds 33.2 mm of light path to a CCA-250-based accessory train — purely mechanical, and built to slot into Takahashi's existing 98 mm system.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047916589167,"sku":"TAK-TKA86205","price":160.16,"currency_code":"CAD","in_stock":false}]},{"product_id":"takahashi-f-6-visual-extension-tube","title":"Takahashi f\/6 Visual Extension Tube","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe f\/6 Visual Extension Tube is Takahashi's Extension Tube (S) — a short M43 x 0.75 spacer for f\/6 Takahashi refractors that adds a published 26 mm to a visual train. It's the shorter of Takahashi's two M43 extension tubes, plain machined metal with no optics of its own.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if your f\/6 Takahashi refractor is coming up short of focus with a diagonal, eyepiece holder, or other M43-threaded accessory and needs a modest amount of extra in-travel.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM43 x 0.75 thread:\u003c\/strong\u003e Takahashi's standard visual-accessory thread on f\/6 models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtension Tube (S) — part TKP00105:\u003c\/strong\u003e Takahashi's own designation for this specific length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e26 mm light path:\u003c\/strong\u003e enough to bring an eyepiece or diagonal back into focus range without over-extending the train.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eUse it to add 26 mm of spacing ahead of a diagonal or eyepiece holder on an M43-threaded Takahashi visual train, or to reach focus where the stock drawtube travel falls short.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIt threads onto Takahashi's M43 x 0.75 visual accessory standard. The published 26 mm is what it adds to the optical train, not the figure you'd get from measuring the tube end to end with calipers — thread engagement on each side changes where the light path actually starts and stops. The \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e tabulates this figure next to every Takahashi telescope's back focus target.\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 into the M43 visual train with nothing to align.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAdding 26 mm of spacing to reach focus or hit a specific backfocus figure in a visual train.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is it different from the f\/8 Visual Extension Tube?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTakahashi lists it as the Extension Tube (S) — 26 mm, against the Extension Tube (L)'s 34 mm.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 26 mm M43 extension tube built for f\/6 Takahashi visual trains. If you're unsure whether the 26 mm or 34 mm tube is the one you need, send us your telescope and eyepiece setup and we'll work it out with you.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047916851311,"sku":"TAK-TKP00105","price":61.49,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tsp0050_2_6.jpg?v=1786936588"},{"product_id":"takahashi-fsq-130ed-aux-ring-27-5mm","title":"Takahashi FSQ-130ED Aux Ring 27.5mm","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Aux Ring (FSQ-130) is Takahashi's Aux. Ring (S) for the FSQ-130ED, with a published light path of 27.5 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 an FSQ-130ED and are building out its camera or accessory train and need this defined 27.5 mm connection point.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e27.5 mm published light path:\u003c\/strong\u003e a fixed, known contribution to your back focus total.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt for the FSQ-130ED:\u003c\/strong\u003e matches this telescope's own accessory ring family rather than a universal fitting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-piece metal ring:\u003c\/strong\u003e no moving parts to maintain.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eExtending or completing the camera or accessory chain on an FSQ-130ED for imaging.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eBuilt for the FSQ-130ED. The 27.5 mm figure is worth adding to your full back-focus total alongside any reducer, flattener, or filter wheel already in the chain — 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.\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 is a single ring with no adjustment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAdding a defined 27.5 mm connection point in the FSQ-130ED's camera or accessory train.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it specific to the FSQ-130ED?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — Takahashi lists it specifically for the FSQ-130ED rather than as a universal ring.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 27.5 mm light-path Aux Ring built for the FSQ-130ED's camera and accessory train.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047917080687,"sku":"TAK-TKA38205","price":135.85,"currency_code":"CAD","in_stock":false}]},{"product_id":"takahashi-wide-mount-t-ring-for-nikon-dx-wr","title":"Takahashi Wide Mount T-Ring for Nikon (DX-WR)","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi's Wide T-Mount DX-WR for Nikon, part TKA01255, is the camera-side ring that mounts a Nikon F-mount body onto a Takahashi telescope's wide-mount system. Takahashi lists its telescope-side thread as M54 x 0.75 male, and the camera side bayonets straight onto an F mount — mirrorless Nikon bodies need an F-to-mirrorless adapter in addition.\u003c\/p\u003e\u003cp\u003eIt sits at the very back of the imaging train, the last ring before the camera itself.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you shoot with a Nikon F-mount body and are building or completing a Takahashi wide-mount imaging train — the DX-WR wide ring, your Nikon body, and this T-ring connecting the two.\u003c\/p\u003e\u003cp\u003eTakahashi builds the DX-WR to two different taper diameters, 49 mm for Nikon and 52 mm for Canon, and the rings aren't interchangeable between mounts — Canon shooters need the separate Canon EOS version.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM54 x 0.75 male telescope-side thread:\u003c\/strong\u003e threads onto Takahashi's wide-mount ring system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNikon F-mount camera side:\u003c\/strong\u003e bayonets directly onto a Nikon F-mount body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide taper design:\u003c\/strong\u003e Takahashi's DX-WR series uses a wider taper than the standard T-mount DX-S, aimed at reducing play with heavier bodies.\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\u003ePrime-focus imaging with a Nikon body\u003c\/strong\u003e through a Takahashi telescope's wide-mount system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompleting a DX-WR imaging train\u003c\/strong\u003e alongside the matching wide ring.\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\u003eNikon F mount only.\u003c\/strong\u003e It isn't compatible with the Canon EOS version of this ring — the two use different taper diameters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads onto Takahashi's M54 x 0.75 wide-mount ring,\u003c\/strong\u003e not directly onto a telescope's drawtube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackfocus contribution:\u003c\/strong\u003e as the last part before the camera body, its contribution to total backfocus is normally worked out from your camera's own flange distance instead — send us your telescope and camera body and we'll work out the full spacing with you, alongside our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e.\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\u003eIt needs the matching DX-WR wide ring\u003c\/strong\u003e ahead of it to complete the train — this ring alone doesn't attach to a telescope. Tell us what you already have and we'll confirm the parts list.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMirrorless Nikon bodies\u003c\/strong\u003e — a Z-series body, for instance — need a Nikon F-to-Z adapter alongside this ring, since it's built for the F-mount bayonet.\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 onto the wide ring and the camera bayonets on the way any T-ring mounts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it fit Canon cameras?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. Canon EOS bodies need the separate Canon DX-WR ring, built to a different taper.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it come with the wide ring itself?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — this is the camera-side T-ring only. The wide ring is a separate part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it add optical path length?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIts contribution to backfocus comes from your camera's flange distance rather than the ring itself — send us your imaging train and we'll confirm the full spacing.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: Takahashi's Nikon F-mount T-ring for the DX-WR wide-mount system — M54 x 0.75 to the wide ring, F-mount bayonet to the camera. It's what connects a Nikon body to a Takahashi wide-mount imaging train.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047917113455,"sku":"TAK-TKA01255","price":171.6,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tka01255_3.jpg?v=1786936595"},{"product_id":"takahashi-f-8-visual-extension-tube","title":"Takahashi f\/8 Visual Extension Tube","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe f\/8 Visual Extension Tube is Takahashi's Extension Tube (L) — a short M43 x 0.75 spacer for f\/8 Takahashi refractors that adds a published 34 mm to a visual train. It's the longer of Takahashi's two M43 extension tubes, plain machined metal with no optics of its own.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if your f\/8 Takahashi refractor needs more in-travel than a diagonal or eyepiece holder alone can reach on an M43-threaded accessory chain.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM43 x 0.75 thread:\u003c\/strong\u003e Takahashi's standard visual-accessory thread on f\/8 models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtension Tube (L) — part TKP00106:\u003c\/strong\u003e Takahashi's own designation for this specific length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e34 mm light path:\u003c\/strong\u003e the longer reach in Takahashi's M43 extension pair, useful when the shorter S tube still leaves you short of focus.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eUse it to add 34 mm of spacing ahead of a diagonal or eyepiece holder on an M43-threaded Takahashi visual train, or to reach focus where the stock drawtube travel falls short.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIt threads onto Takahashi's M43 x 0.75 visual accessory standard. The published 34 mm is what it adds to the optical train, not the figure you'd get from measuring the tube end to end with calipers — thread engagement on each side changes where the light path actually starts and stops. The \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e tabulates this figure next to every Takahashi telescope's back focus target.\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 into the M43 visual train with nothing to align.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAdding 34 mm of spacing to reach focus or hit a specific backfocus figure in a visual train.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is it different from the f\/6 Visual Extension Tube?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTakahashi lists it as the Extension Tube (L) — 34 mm, against the Extension Tube (S)'s 26 mm.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 34 mm M43 extension tube built for f\/8 Takahashi visual trains. If you're unsure whether the 26 mm or 34 mm tube is the one you need, send us your telescope and eyepiece setup and we'll work it out with you.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047917146223,"sku":"TAK-TKP00106","price":61.49,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tsp0060_2_6.jpg?v=1786936601"},{"product_id":"takahashi-2-adapter-for-fs-102-128-130-152","title":"Takahashi 2\" Adapter for FS-102\/128\/130\/152","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi's 50.8 Adapter for Normal Refractors (TKP27110) is the ring that lets an FS-102, FS-128, FS-130 or FS-152 take standard 2-inch eyepieces and diagonals. These four telescopes share a 2.7-inch drawtube, and a bare 2-inch barrel simply won't fit it without this step-down in between.\u003c\/p\u003e\u003cp\u003eTakahashi publishes a light path length of 40 mm for the adapter — not its physical size, but what it adds to the train once it's threaded on. At 40 mm it's a meaningful chunk of spacing, worth accounting for if you're already tight on focus travel or working out backfocus for a flattener downstream.\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 an FS-102, FS-128, FS-130 or FS-152 and want to run 2-inch eyepieces or a 2-inch diagonal on it.\u003c\/p\u003e\u003cp\u003eIt won't help on other Takahashi models, though — the FSQ-85ED and FSQ-106EDX4 use the same M72 thread but a shorter, 30 mm version of this adapter, sold separately.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM72 x 1.0 male telescope-side thread:\u003c\/strong\u003e fits the 2.7-inch drawtube of the FS-102\/128\/130\/152 series.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-inch (50.8 mm) accessory side:\u003c\/strong\u003e accepts standard 2-inch eyepieces and diagonals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurely mechanical:\u003c\/strong\u003e a step-down ring, with no optical element and no effect on focal length or focal ratio.\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\u003eVisual observing with 2-inch wide-field eyepieces\u003c\/strong\u003e on the FS-102\/128\/130\/152.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting a 2-inch star diagonal,\u003c\/strong\u003e for the wider true field it gives over 1.25-inch.\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\u003eBuilt for the FS-102, FS-128, FS-130 and FS-152\u003c\/strong\u003e and their shared 2.7-inch drawtube — it isn't a universal 2-inch adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdds 40 mm to the optical path.\u003c\/strong\u003e That's the figure to weigh against your focuser's inward travel and against any flattener's backfocus spec down the line. Our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e lists it alongside the back focus each telescope needs.\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\u003eIt's specific to the 2.7-inch drawtube telescopes named above.\u003c\/strong\u003e Tell us your FS model if you're not sure which drawtube it uses and we'll confirm.\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 onto the drawtube and the 2-inch accessory slides straight in.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich telescopes does it fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe FS-102, FS-128, FS-130 and FS-152, which all share a 2.7-inch drawtube.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does it add to my optical train?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e40 mm, and that's worth checking against your focus travel before you order — send us your setup and we'll confirm it fits.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it work on the FSQ-85ED?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — that telescope takes a shorter version of this adapter, at 30 mm of light path, sold as its own part.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 2-inch adapter for the FS-102\/128\/130\/152's 2.7-inch drawtube, adding 40 mm of light path to the train.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047917506671,"sku":"TAK-TKP27110","price":177.32,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/toa0400_2_6.jpg?v=1786936610"},{"product_id":"takahashi-vari-ring-spacer","title":"Takahashi Vari-Ring Spacer","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Vari-Ring Spacer is a Takahashi M72 x 1.0 ring built for one job on the TOA telescope series: shifting how much reduction the matched reducer actually delivers. Takahashi publishes its light path at 17 mm — add it ahead of a TOA reducer and the effective reduction ratio changes with it.\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 TOA-series reducer and want to fine-tune the reduction ratio, or you're matching a published system chart that calls for the Vari-Ring specifically.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM72 x 1.0 thread on both ends:\u003c\/strong\u003e male on one side, female on the other, so it drops straight into the M72 reducer chain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 mm light path:\u003c\/strong\u003e enough to noticeably shift a TOA reducer's effective ratio without swapping the reducer itself.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTakahashi part TKA31581\u003c\/strong\u003e — Takahashi's own \"Vari-Ring\" designation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eUse it between a TOA-series reducer and the rest of the imaging train to shift the effective reduction ratio, per Takahashi's published system chart for your telescope.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIt fits Takahashi's M72 x 1.0 accessory system used on the TOA series. The 17 mm figure is what it contributes to the optical train, not its physical length end to end — the male and female M72 threads seat differently than a caliper measurement would suggest. The \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e lists this figure next to the back focus target for each TOA model, so you can check the total spacing 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 into the M72 reducer chain like any other ring in the system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAdjusting the effective reduction of a TOA-series reducer by changing the spacing ahead of it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it work with reducers outside the TOA series?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTakahashi documents it for the TOA series specifically. If you're matching a different M72 reducer, send us your telescope and reducer model and we'll confirm the fit.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eAn M72 x 1.0 spacer built to dial in the reduction on a TOA-series reducer, adding 17 mm to the optical train in the process.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047917539439,"sku":"TAK-TKA31581","price":62.92,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tka31581_2_6.jpg?v=1786936615"},{"product_id":"takahashi-tsa-102-m72-to-f72-aux-extension-tube-52mm","title":"Takahashi TSA-102 M72 to F72 Aux Extension Tube 52mm","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe M72 to F72 Aux Extension Tube is Takahashi's Aux. Ring (FB TSA-102mm), threading M72 x 1.0 into the TSA-102's camera-side connection. It carries a published light path of 52 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 TSA-102 and need 52 mm of additional M72 spacing to reach a target back focus for imaging or to fit a 2\" visual accessory further out.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM72 x 1.0 thread throughout:\u003c\/strong\u003e matches the TSA-102's own camera-side interface at both ends.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e52 mm published light path:\u003c\/strong\u003e a fixed, known contribution to your back focus total.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2\" clear aperture:\u003c\/strong\u003e passes a full 2\" light cone without vignetting concerns from the tube itself.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eAdding 52 mm of M72 spacing to a TSA-102 imaging train, or extending the reach of a 2\" visual accessory chain.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eBuilt for the TSA-102, with M72 x 1.0 threading on both ends. At 52 mm, it is a substantial part of most back-focus budgets, so it is worth checking against your camera, flattener, and any other spacers already in the train — 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.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003e52 mm is a large fixed step:\u003c\/strong\u003e because it cannot be trimmed, it is worth confirming it lands your train at the right total before ordering rather than after. Send us your full imaging or visual setup and we will work out the spacing with you.\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 in at both ends with no adjustment involved.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAdding a fixed 52 mm of M72 spacing in a TSA-102 imaging or visual accessory train.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it work for both visual and imaging use?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — it is a mechanical extension tube with a full 2\" clear aperture, so it carries through either a visual or imaging chain.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 52 mm light-path, M72 extension tube for the TSA-102. It is worth confirming against the rest of your train before ordering, given the size of the step.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047917736047,"sku":"TAK-TKA23250","price":140.14,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tka23250_3.jpg?v=1786936622"},{"product_id":"takahashi-2-adapter-for-fsq85-ed","title":"Takahashi 2\" Adapter for FSQ85-ED","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi's 50.8 Adapter for the FSQ-106EDX4 and FSQ-85EDX (TKP27110S) slides inside the existing focuser drawtube on these two telescopes to accept 2-inch eyepieces and diagonals. It's also required on the FSQ-106EDX4 when the 1.6x Extender is fitted, where it supplies the same 2-inch step for that configuration.\u003c\/p\u003e\u003cp\u003eTakahashi publishes a light path length of 30 mm for it — shorter than the equivalent adapter for the FS-102\/128\/130\/152 series (40 mm), tuned instead to how these two telescopes are spaced. It's still worth factoring into a backfocus calculation if your train is already close to its limit.\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 an FSQ-85EDX or FSQ-106EDX4 and want to run 2-inch eyepieces or a diagonal directly, or if you're running the 1.6x Extender on the FSQ-106EDX4 and need the matching 2-inch step.\u003c\/p\u003e\u003cp\u003eIt isn't the same part as the FSQ85 2\" Visual Adapter (TKT37110) sold alongside it — that one is built for the Extender-QE 1.6x 2\" field flattener system rather than the bare focuser drawtube. See its own listing if that's your setup.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM72 x 1.0 male telescope-side thread:\u003c\/strong\u003e slides inside the FSQ-85EDX \/ FSQ-106EDX4 focuser drawtube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-inch (50.8 mm) accessory side:\u003c\/strong\u003e accepts standard 2-inch eyepieces and diagonals.\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\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual observing with 2-inch eyepieces\u003c\/strong\u003e on the FSQ-85EDX or FSQ-106EDX4.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting a 2-inch diagonal\u003c\/strong\u003e for wide-field visual use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRunning the FSQ-106EDX4 with its 1.6x Extender,\u003c\/strong\u003e where this adapter supplies the required 2-inch step.\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\u003eBuilt for the FSQ-85EDX and FSQ-106EDX4 specifically.\u003c\/strong\u003e The M72 thread is shared with other Takahashi refractors, but the 30 mm light path is tuned to these two.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdds 30 mm to the optical path\u003c\/strong\u003e — enough to matter against a flattener's backfocus spec or a tight focuser travel. Our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e lists this figure alongside the back focus each telescope needs.\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\u003eIt isn't interchangeable with the Normal Refractors version of this adapter,\u003c\/strong\u003e which runs a longer 40 mm light path built for the FS-102\/128\/130\/152 drawtube. Tell us your telescope model and we'll confirm the right one.\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 slides into the existing drawtube and the 2-inch accessory fits straight in.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich telescopes does it fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe FSQ-85EDX, and the FSQ-106EDX4 both on its own and with the 1.6x Extender fitted.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this the same part as the FSQ85 2\" Visual Adapter?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — that one is built for the Extender-QE 1.6x 2\" field flattener system, a different point in the train with its own listing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does it add to my optical train?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e30 mm. Send us your full setup if you want to check it against your backfocus target.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 2-inch adapter for the FSQ-85EDX and FSQ-106EDX4's focuser drawtube, adding 30 mm of light path — on its own or with the 1.6x Extender fitted.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047917801583,"sku":"TAK-TKP27110S","price":177.32,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/toa0401_2_6.jpg?v=1786936625"},{"product_id":"takahashi-photo-tube-extension-dt","title":"Takahashi Photo Tube Extension DT","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Photo Tube Extension DT is Takahashi's Coupling (DT), an M55.9 x 0.75 ring built specifically for the \"DT\" photo\/visual train. Takahashi publishes its light path at 18 mm, and it comes with one notable restriction: it won't thread onto every M55.9 part in the lineup.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if your Takahashi system chart calls for the Coupling (DT) specifically, or you're assembling a camera train on the M55.9 accessory standard and need this exact spacing.\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 Takahashi's drawtube-accessory standard shared across several refractors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoupling (DT) — Takahashi part TKP20006B:\u003c\/strong\u003e the manufacturer's own designation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e18 mm light path:\u003c\/strong\u003e a mid-length step in the M55.9 family, between the 10 mm Visual Coupling S and the 30 mm Extension Tube L30.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eUse it in an M55.9 camera train where the published system chart specifies the Coupling (DT) — typically to reach a flattener or reducer's stated backfocus.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIt threads onto Takahashi's M55.9 x 0.75 accessory standard. Takahashi's own documentation notes that this coupling and the M55.9 Extension Tube L30 cannot be screwed onto the female thread of the Camera Angle Adjuster S — worth checking against your system chart before ordering. Its 18 mm light path is what it adds to the optical train, not a caliper measurement of the physical part. The \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e tabulates this figure alongside every Takahashi telescope'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\u003eIt does not thread onto the Camera Angle Adjuster S's female thread.\u003c\/strong\u003e Takahashi documents this specifically — if your train includes the Camera Angle Adjuster S, send us your full setup and we'll confirm what does fit.\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 into the M55.9 chain directly, aside from the Camera Angle Adjuster S exception noted above.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAdding a fixed 18 mm of spacing in an M55.9 photo\/visual train, per Takahashi's system chart.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it a visual-only part or does it work for imaging too?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTakahashi designates it \"DT\" for its photo\/visual train, and it carries no optics, so it works the same mechanically in either use.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eAn M55.9 coupling that adds a published 18 mm to the light path, built for Takahashi's DT photo\/visual train — with the one Camera Angle Adjuster S exception worth checking first.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047917965423,"sku":"TAK-TKP20006B","price":62.92,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tkp20006b_3.jpg?v=1786936629"},{"product_id":"takahashi-fsq85-2-visual-adapter","title":"Takahashi FSQ85 2\" Visual Adapter","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is Takahashi's FSQ85 2\" Visual Adapter, part TKT37110 — a 2-inch ocular adapter built for use within the Extender-QE 1.6x 2\" field flattener system on the FSQ-106EDX. Takahashi's own listing describes it as the ocular adapter for that system, not as a direct focuser-drawtube fitting.\u003c\/p\u003e\u003cp\u003eIt's easy to confuse with the 2\" Adapter for FSQ85-ED (TKP27110S) sold alongside it, but the two serve different points in the train: that one slides directly into the bare focuser drawtube, while this one is the visual-side adapter for the Extender-QE system.\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 the Extender-QE 1.6x 2\" field flattener on an FSQ-106EDX and need the matching 2-inch ocular adapter for visual use through that system.\u003c\/p\u003e\u003cp\u003eIf you're using the FSQ-85EDX or FSQ-106EDX4 directly, without the Extender-QE, the separate 2\" Adapter for FSQ85-ED (TKP27110S) is the part you want instead.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-inch (50.8 mm) tube:\u003c\/strong\u003e accepts standard 2-inch eyepieces and diagonals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt for the Extender-QE 2 system:\u003c\/strong\u003e Takahashi pairs it specifically with the FSQ-106EDX field-flattener setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurely mechanical:\u003c\/strong\u003e no optical element of its own.\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\u003eVisual observing through the Extender-QE system\u003c\/strong\u003e on an FSQ-106EDX.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting a 2-inch diagonal or eyepiece\u003c\/strong\u003e where the Extender-QE's own visual path is being used.\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\u003eBuilt for the Extender-QE 1.6x 2\" field flattener on the FSQ-106EDX.\u003c\/strong\u003e It isn't the same fitting used on a bare FSQ-85EDX or FSQ-106EDX4 focuser — see the separate 2\" Adapter for FSQ85-ED for that use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurely mechanical\u003c\/strong\u003e — no correction, 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\u003eIt isn't interchangeable with the 2\" Adapter for FSQ85-ED (TKP27110S).\u003c\/strong\u003e Both are 2-inch, 50.8 mm adapters at a similar price, but they fit different points in the train — tell us whether you're running the Extender-QE and we'll confirm which one you need.\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 fits into the Extender-QE's visual section the same way any 2-inch adapter installs, with nothing to align.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this the same as the 2\" Adapter for FSQ85-ED?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. That part fits the bare FSQ-85EDX or FSQ-106EDX4 focuser drawtube directly. This one is built for the Extender-QE 1.6x 2\" field flattener system.\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 2-inch ocular adapter for the Extender-QE 1.6x 2\" field flattener system on the FSQ-106EDX — a different part from the FSQ85-ED focuser adapter it's often confused with, built for a different point in the train.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047918686319,"sku":"TAK-TKT37110","price":177.32,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/takahashi-2-fsq85-visual-adapter-tkt37110-astronomy-plus_529x529_15d22f11-89ad-4b6b-b79a-4fe42c39315a.jpg?v=1786936644"},{"product_id":"takahashi-35mm-wide-mount-camera-adapter","title":"Takahashi 35mm Wide Mount Camera Adapter","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe 35mm Wide Mount Camera Adapter is Takahashi's CA35 camera ring — the piece that turns an M55.9 drawtube into a mount point for Takahashi's Wide Mount T-ring system, so a DSLR or mirrorless body can go straight onto the telescope at prime focus. One face threads onto the drawtube; the other accepts the T-ring for your camera brand.\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 connecting a DSLR or mirrorless camera through a wide T-mount to a Takahashi refractor on the M55.9 drawtube standard. Takahashi names the Sky-90 and FSQ-85EDX directly, and the same M55.9 thread also appears on the FS-78, FS-60C and FC-60E.\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 female, telescope side:\u003c\/strong\u003e threads directly onto the drawtube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM54 x 0.75 female, camera side:\u003c\/strong\u003e accepts Takahashi's Wide Mount T-ring system for DSLR and mirrorless bodies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTakahashi part TKA35201 (CA35):\u003c\/strong\u003e the manufacturer's own camera-adapter-ring designation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eUse it for prime-focus DSLR or mirrorless imaging through a Takahashi refractor's M55.9 drawtube, paired with the Wide Mount T-ring for your camera brand.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi documents this ring for the Sky-90 and FSQ-85EDX, and for the FS-78, FS-60C and FC-60E, all of which share the M55.9 x 0.75 drawtube thread. It steps that drawtube thread down to M54 x 0.75 on the camera side, where it takes the Wide Mount T-ring rather than a camera body directly — so plan on ordering the T-ring matched to your mount separately. The \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e is still worth checking for the back focus target on your telescope once the rest of the train is planned.\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 on one side and accepts the Wide Mount T-ring on the other, with nothing to adjust in between.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePrime-focus DSLR and mirrorless imaging through an M55.9-drawtube Takahashi refractor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it come with a T-ring for my camera?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — it's the telescope-side ring only. You'll need the Wide Mount T-ring matched to your camera mount separately.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eAn M55.9-to-M54 camera adapter ring that puts a DSLR or mirrorless body at prime focus on Takahashi's M55.9-drawtube refractors, once paired with a Wide Mount T-ring for your camera.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047920717935,"sku":"TAK-TKA35201","price":72.93,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tca1020_2_6.jpg?v=1786936653"},{"product_id":"takahashi-89mm-prime-focus-ring","title":"Takahashi 89mm Prime Focus Ring","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Prime Focus Ring (89mm) is a Takahashi accessory ring sized to an 89 mm accessory-ring interface, used to anchor a camera at prime focus in the optical train.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if your Takahashi telescope's camera-side accessory system uses the 89 mm ring interface and you are setting up a prime-focus imaging connection.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e89 mm ring interface:\u003c\/strong\u003e matches Takahashi's larger-format accessory ring family.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrime-focus mounting:\u003c\/strong\u003e holds the camera directly in the optical path rather than through an eyepiece projection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSatin-black finished metal ring:\u003c\/strong\u003e matches Takahashi's other camera-side rings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eAnchoring a camera at prime focus on a Takahashi telescope that uses the 89 mm accessory ring interface.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eFits Takahashi's 89 mm accessory ring interface. 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 and is a useful starting reference for the rest of your chain.\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 is a single ring that threads into the 89 mm accessory interface, with no adjustment involved.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAnchoring a camera at prime focus on a Takahashi telescope using the 89 mm accessory ring system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my telescope uses this ring size?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSend us your telescope model and we will confirm whether it uses the 89 mm accessory ring interface this part fits.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eAn 89 mm prime-focus ring for anchoring a camera in Takahashi's larger-format accessory ring system.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047920750703,"sku":"TAK-TKA86002","price":143.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/takahashi-takahashi-cca-250-extension-ring.jpg?v=1786936653"},{"product_id":"takahashi-fs-60-dew-shield-extension-silver","title":"Takahashi FS-60 Dew Shield Extension (Silver)","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is Takahashi's FS-60 Dew Shield Extension in silver, part TKA06220 — additional shielding that lengthens the dew shield on the FS-60 series (FS-60C, FS-60CB, FS-60Q). It has nothing to do with the optical train; it clips onto the objective end of the tube and simply gives the front element more distance from open sky.\u003c\/p\u003e\u003cp\u003eOn a short refractor like the FS-60, the stock dew shield is compact, and dew and stray light both have an easier path to the objective than on a longer tube. This extension is a straightforward answer to that.\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 an FS-60 series refractor and want extra protection against dew forming on the objective, or against stray light entering from the side at low altitude.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilver finish:\u003c\/strong\u003e matches the factory finish of the FS-60 series tube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtends the existing dew shield:\u003c\/strong\u003e adds length ahead of the objective rather than replacing the shield.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStray-light control:\u003c\/strong\u003e the added length also cuts down light entering from low angles, alongside its dew function.\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\u003eExtended imaging or observing sessions in humid conditions,\u003c\/strong\u003e where dew on the objective is the limiting factor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSites with light domes near the horizon,\u003c\/strong\u003e where the added shielding keeps stray light off the objective.\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\u003eBuilt for the FS-60 series\u003c\/strong\u003e — FS-60C, FS-60CB and FS-60Q.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAttaches to the existing dew shield\u003c\/strong\u003e rather than replacing it.\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\u003eIt's a physical extension, not a heated dew strap.\u003c\/strong\u003e It works passively, by distance, rather than by warming the objective — and can be run alongside a heated strap if you already use one.\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 fits onto the existing dew shield with no tools or adjustment needed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it affect anything downstream in my imaging setup?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It sits ahead of the objective, entirely outside the optical train.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich telescopes does it fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe FS-60 series — FS-60C, FS-60CB and FS-60Q.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it replace a heated dew strap?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — it's a passive extension. A heated dew strap works differently and can still be used alongside it.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a silver dew shield extension for the FS-60 series, adding passive protection against dew and low-angle stray light ahead of the objective.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047921012847,"sku":"TAK-TKA06220","price":181.61,"currency_code":"CAD","in_stock":false}]},{"product_id":"takahashi-wide-mount-t-ring-for-canon-eos-dx-wr","title":"Takahashi Wide Mount T-Ring for Canon EOS (DX-WR)","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi's Wide T-Mount DX-WR for Canon EOS, part TKA01251, is the camera-side ring that mounts a Canon EOS DSLR or mirrorless body onto a Takahashi telescope's wide-mount system. Takahashi lists its telescope-side thread as M54 x 0.75 male, and the camera side bayonets straight onto an EF mount — mirrorless Canon bodies need an EF adapter in addition.\u003c\/p\u003e\u003cp\u003eIt sits at the very back of the imaging train, the last ring before the camera itself.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you shoot with a Canon EOS body and are building or completing a Takahashi wide-mount imaging train — the DX-WR wide ring, your Canon body, and this T-ring connecting the two.\u003c\/p\u003e\u003cp\u003eTakahashi builds the DX-WR to two different taper diameters, 52 mm for Canon and 49 mm for Nikon, and the rings aren't interchangeable between mounts — Nikon shooters need the separate Nikon version.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM54 x 0.75 male telescope-side thread:\u003c\/strong\u003e threads onto Takahashi's wide-mount ring system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCanon EF-mount camera side:\u003c\/strong\u003e bayonets directly onto a Canon EOS body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide taper design:\u003c\/strong\u003e Takahashi's DX-WR series uses a wider taper than the standard T-mount DX-S, aimed at reducing play with heavier bodies.\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\u003ePrime-focus imaging with a Canon EOS body\u003c\/strong\u003e through a Takahashi telescope's wide-mount system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompleting a DX-WR imaging train\u003c\/strong\u003e alongside the matching wide ring.\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\u003eCanon EOS (EF mount) only.\u003c\/strong\u003e It isn't compatible with the Nikon version of this ring — the two use different taper diameters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads onto Takahashi's M54 x 0.75 wide-mount ring,\u003c\/strong\u003e not directly onto a telescope's drawtube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackfocus contribution:\u003c\/strong\u003e as the last part before the camera body, its contribution to total backfocus is normally worked out from your camera's own flange distance instead — send us your telescope and camera body and we'll work out the full spacing with you, alongside our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e.\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\u003eIt needs the matching DX-WR wide ring\u003c\/strong\u003e ahead of it to complete the train — this ring alone doesn't attach to a telescope. Tell us what you already have and we'll confirm the parts list.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMirrorless Canon bodies\u003c\/strong\u003e — an EOS R-series body, for instance — need an EF-to-mirrorless adapter alongside this ring, since it's built for the EF-mount bayonet.\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 onto the wide ring and the camera bayonets on the way any T-ring mounts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it fit Nikon cameras?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. Nikon F-mount bodies need the separate Nikon DX-WR ring, built to a different taper.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it come with the wide ring itself?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — this is the camera-side T-ring only. The wide ring is a separate part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it add optical path length?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIts contribution to backfocus comes from your camera's flange distance rather than the ring itself — send us your imaging train and we'll confirm the full spacing.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: Takahashi's Canon EF-mount T-ring for the DX-WR wide-mount system — M54 x 0.75 to the wide ring, EF bayonet to the camera. It's what connects a Canon EOS body to a Takahashi wide-mount imaging train.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047922159727,"sku":"TAK-TKA01251","price":185.9,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tka01251_6.jpg?v=1786936670"},{"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"},{"product_id":"takahashi-ca-35mm-adapter-fs-60c","title":"Takahashi CA 35mm Adapter FS-60C","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe CA 35mm Adapter FS-60C is Takahashi's CA35 C2X camera adapter for the FS-60 series — an M43 x 0.75 to M42 x 0.75 (T-thread) ring with an adjustable metal back distance of 17–21 mm. Takahashi publishes its weight at 50 g.\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 mounting a T-ring-equipped DSLR or mirrorless camera to an FS-60C-family refractor and want the metal back distance adjustable within a small range rather than fixed.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM43 x 0.75 male, telescope side:\u003c\/strong\u003e threads onto the FS-60C accessory chain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM42 x 0.75 T-thread, camera side:\u003c\/strong\u003e accepts a standard T-ring for your camera mount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable 17–21 mm metal back distance:\u003c\/strong\u003e a small range you can dial in rather than a single fixed figure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7 mm M43 counter ring included\u003c\/strong\u003e for centering adjustment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 g:\u003c\/strong\u003e Takahashi's published weight.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eUse it for prime-focus DSLR or mirrorless imaging on an FS-60C-family refractor, where the adjustable 17–21 mm back distance lets you fine-tune spacing against a flattener's target rather than relying on a fixed-length ring.\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\/TKA00205_schema.png?v=1786936378\" alt=\"Dimensional schema of the Takahashi CA35 C2X camera adapter TKA00205 showing M43 input, T-thread output and adjustable back distance\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003cp\u003eIts metal back distance runs 17–21 mm, published by Takahashi — this is what the adapter contributes to your optical train across its adjustment range, not a single caliper measurement of the part. It takes a standard M42 x 0.75 T-ring on the camera side, so you'll need the ring matched to your camera mount separately. The \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e tabulates comparable Takahashi adapter figures alongside each telescope's back focus target, useful for checking your total spacing.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIt needs a separately sold T-ring for your camera mount.\u003c\/strong\u003e The adapter itself ends in a standard M42 x 0.75 T-thread rather than a body-specific mount.\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 — the back distance adjusts within its 17–21 mm range using the included counter ring, and then it's a standard T-thread connection to your camera.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePrime-focus imaging on an FS-60C-family refractor with a T-ring-mounted DSLR or mirrorless camera.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat makes it different from a fixed camera adapter?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe 17–21 mm metal back distance is adjustable, so it can be tuned to a flattener's exact backfocus target instead of landing wherever a fixed-length ring happens to put it.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 50 g M43-to-T-thread camera adapter for the FS-60C series, with an adjustable 17–21 mm metal back distance and a standard T-ring connection.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047926124655,"sku":"TAK-TKA00205","price":78.65,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tka00205_3.jpg?v=1786936691"},{"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"},{"product_id":"takahashi-2-inch-sleeve-adapter","title":"Takahashi 2 Inch Sleeve Adapter","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi's own catalog designation for this part is the \"50.8 Sleeve\" — a short ring in the 50.8 mm (2\") accessory system with a published light path of 5 mm, the shortest spacer in the Takahashi accessory line.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if your Takahashi system chart calls out this ring within a 2\" accessory chain, or you're replacing this specific part from an existing setup.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e50.8 mm (2\") sleeve fitting:\u003c\/strong\u003e Takahashi's own \"50.8 Sleeve\" designation for this ring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 mm light path:\u003c\/strong\u003e a small, fixed increment for fine-tuning spacing rather than bridging two different standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTakahashi part TKP00113\u003c\/strong\u003e — a single-piece machined ring with no moving parts.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eUse it where a Takahashi system chart specifies this part within a 2\" visual or imaging train, typically to add a small, fixed amount of spacing.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi's catalog lists this ring as the \"50.8 Sleeve,\" with a 5 mm light path — what it contributes to the optical train, not a caliper measurement of the part itself. It's a sleeve fitting rather than a thread adapter, and Takahashi doesn't spell out a separate 2\"-to-1.25\" step-down for this part number. If your train needs a confirmed 2\"-to-1.25\" step-down, send us your telescope and eyepiece setup and we'll confirm the exact part for it. The \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e is worth checking for the back focus target on your telescope once your full train is planned.\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's a single ring that fits directly into the 2\" 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\u003eAdding a fixed 5 mm of spacing within a Takahashi 50.8 mm (2\") accessory train.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it convert 2\" to 1.25\"?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTakahashi's catalog lists it only as a 50.8 mm sleeve fitting. Send us your setup and we'll confirm whether this or a different part gets you to 1.25\".\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi's \"50.8 Sleeve\" (TKP00113) — a 5 mm ring for a 2\" accessory train. If your goal is specifically a confirmed 2\"-to-1.25\" step-down, send us your telescope and eyepiece plans and we'll work out the right part with you.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047926616175,"sku":"TAK-TKP00113","price":81.51,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tkp00113_6.jpg?v=1786936705"},{"product_id":"takahashi-2-extension-tube-l","title":"Takahashi 2\" Extension Tube (L)","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi's Extension Tube (L) (50.8), part TKP31112, is a 2-inch sleeve that lengthens a Takahashi imaging or visual train. Takahashi publishes a light path length of 73.5 mm for it — not its physical size, but what it adds once it's in the train — and it's the longer of Takahashi's two 50.8 mm extension tubes; the shorter Extension Tube (50.8) (TKP27112) adds 62 mm instead.\u003c\/p\u003e\u003cp\u003eAt 73.5 mm it's a substantial step, useful when a shorter extension leaves you short of focus or short of a flattener's specified backfocus.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if your setup needs roughly 73.5 mm of additional 2-inch spacing to reach focus or hit a flattener's specified backfocus — on a TOA-130 imaging train, for instance, where Takahashi lists it as a compatible accessory.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e50.8 mm sleeve:\u003c\/strong\u003e accepts standard 2-inch fittings on both ends.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e73.5 mm light path length:\u003c\/strong\u003e Takahashi's published figure for the spacing this tube adds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack anodized finish:\u003c\/strong\u003e non-reflective inside the light path.\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\u003eReaching focus\u003c\/strong\u003e in trains with a long inward-travel requirement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHitting a flattener or reducer's specified backfocus,\u003c\/strong\u003e where the shorter extension tube falls short.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtending a TOA-130 imaging or visual train,\u003c\/strong\u003e where Takahashi lists it as a compatible part.\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\u003e50.8 mm sleeve fitting\u003c\/strong\u003e on both ends, compatible with Takahashi's 2-inch accessory system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdds 73.5 mm to the optical path\u003c\/strong\u003e — worth working into a full train calculation before you order. 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\u003eIt's the longer of two similar Takahashi extension tubes.\u003c\/strong\u003e The shorter Extension Tube (50.8) adds 62 mm rather than 73.5 mm — tell us your target spacing and we'll confirm which one you need.\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's a straight sleeve that fits between two 2-inch fittings, with nothing to align.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does it add to my optical train?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e73.5 mm — send us your full train if you'd like it checked against a flattener's backfocus spec before you order.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs there a shorter version?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — Takahashi's Extension Tube (50.8) adds 62 mm instead, sold as a separate part.\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 2-inch Extension Tube (L) — a 50.8 mm sleeve adding 73.5 mm of light path, for trains that need the longer of Takahashi's two standard extension steps.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047927173231,"sku":"TAK-TKP31112","price":247.39,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tet0002l_2_6.jpg?v=1786936711"},{"product_id":"takahashi-fc100-camera-ring-m72-m55-9-coupling","title":"Takahashi FC100 Camera Ring M72-M55.9 Coupling","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FC100 Camera Ring M72 - M55.9 Coupling is the piece that lets an M72-threaded accessory — a reducer, flattener, or camera ring — mate with an M55.9-threaded drawtube or accessory further down the train. Takahashi uses both standards across the FC-100 series, and this ring is what joins them.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if your imaging or visual train mixes M72 and M55.9-threaded Takahashi accessories and you need the coupling that bridges the two.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM72 x 1.0 thread on one side:\u003c\/strong\u003e Takahashi's wider accessory standard, used on reducers, flatteners and camera rings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM55.9 x 0.75 thread on the other:\u003c\/strong\u003e Takahashi's drawtube-accessory standard on several refractors, including the FC-100 series.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTakahashi part TKA19205\u003c\/strong\u003e — Takahashi's own \"M72\/M55.9 coupling\" designation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eUse it to join an M72-threaded accessory — a reducer, flattener, or camera ring — to an M55.9-threaded drawtube or accessory further down the FC-100 train.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIt bridges Takahashi's M72 x 1.0 and M55.9 x 0.75 accessory standards, both used on the FC-100 series. The \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e is still worth checking for the back focus target on your FC-100 once the rest of your train is planned.\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 between the two accessory standards it was built to join, with nothing to align.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eJoining M72 and M55.9-threaded accessories in an FC-100 imaging or visual train.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this coupling specific to the FC-100, or does it fit other Takahashi scopes?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTakahashi documents both threads it bridges on the FC-100 series specifically; other Takahashi refractors sharing either standard can use it the same way. Send us your telescope model and we'll confirm the fit.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA coupling that bridges Takahashi's M72 and M55.9 accessory standards, purpose-built for mixed-thread FC-100 trains.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047927959663,"sku":"TAK-TKA19205","price":90.09,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TKA19205_1.jpg?v=1786936721"},{"product_id":"takahashi-fsq-106n-ed-prime-focus-ring","title":"Takahashi FSQ-106N\/ED Prime Focus Ring","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is Takahashi's FSQ-106N\/ED Prime Focus Ring, part TKA36205 — a prime-focus coupling for the FSQ-106N and FSQ-106ED that steps from a male 92 mm thread to a female 92 mm thread. Takahashi publishes its length as 58 mm.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you are running a prime-focus imaging train on the FSQ-106N or FSQ-106ED and need this specific M92 male-to-female coupling step.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMale 92 mm thread\u003c\/strong\u003e on one face.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFemale 92 mm thread\u003c\/strong\u003e on the other, extending the M92 accessory family used on the FSQ-106N\/ED.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e58 mm length,\u003c\/strong\u003e the figure Takahashi publishes for this ring — enough to matter when you're totaling up backfocus on a prime-focus train.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eUse it as the specified M92 coupling step for prime-focus imaging on the FSQ-106N or FSQ-106ED.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt for the FSQ-106N and FSQ-106ED\u003c\/strong\u003e M92 thread family.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTakahashi publishes its length as 58 mm.\u003c\/strong\u003e Send us your full FSQ-106N\/ED accessory train and we'll confirm the fit before you order, alongside our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical only\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\u003eThe 58 mm figure is Takahashi's own published length for this ring.\u003c\/strong\u003e We're glad to confirm it against your specific train before you order.\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 is a threaded coupling ring that installs like any other part in the M92 accessory family.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich telescopes does it fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe FSQ-106N and FSQ-106ED.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does it add to my optical train?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e58 mm, per Takahashi's published figure. We can confirm it against your setup.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it include any optics?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo, it is a mechanical adapter only.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi's FSQ-106N\/ED Prime Focus Ring — male 92 mm to female 92 mm, 58 mm long. It's the M92 coupling step for prime-focus imaging on these telescopes.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047928057967,"sku":"TAK-TKA36205","price":327.47,"currency_code":"CAD","in_stock":false}]},{"product_id":"takahashi-coupling-tw-22-5mm-wide-mount-adapter","title":"Takahashi Coupling (TW) 22.5mm Wide Mount Adapter","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi's Coupling (TW), part TKP31003, is the ring that carries a telescope-side accessory train across to the Wide Mount T-ring camera system. Takahashi publishes a 22.5 mm light path for it — the length it contributes to your optical train, not the length you would measure across the part on a bench. On the system charts it is no. 8, a step away from the Wide T-mount entry it feeds.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you image through a Takahashi refractor and want your camera hanging off the Wide Mount T-ring system rather than the narrower standard T-thread.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoupling (TW) — Takahashi part TKP31003:\u003c\/strong\u003e no. 8 in Takahashi's system charts, where it links the telescope-side accessory chain to the Wide T-mount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e22.5 mm light path:\u003c\/strong\u003e Takahashi's published figure for what this coupling contributes to the optical train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Mount camera side:\u003c\/strong\u003e it opens onto the DX-WR Wide Mount T-ring family, so the camera body attaches through the wider of Takahashi's two ring systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurely mechanical:\u003c\/strong\u003e no optical element, and no change to focal length or focal ratio.\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\u003ePrime-focus imaging\u003c\/strong\u003e with a Wide Mount T-ring on a Takahashi refractor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRebuilding a camera train\u003c\/strong\u003e around the Wide Mount system after a change of camera body.\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\u003e22.5 mm of the budget.\u003c\/strong\u003e Every flattener and reducer has a back focus target, and this coupling spends 22.5 mm of it, which is worth working out before the rest of the train is fixed. The \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e lists the figure alongside the back focus target for each Takahashi telescope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Mount T-rings are the other half.\u003c\/strong\u003e The DX-WR rings for Canon EOS and Nikon carry the camera-side connection and are sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThere is a second version for the CCA-250.\u003c\/strong\u003e Takahashi lists that one as no. 8A, part TKP86003, at 34.2 mm — a different length for a different accessory family, so the two are not interchangeable.\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 two accessory families that were designed to meet here, and there is nothing to align or adjust once it is seated.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does it add to my optical train?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e22.5 mm, per Takahashi's published light path figure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is it different from the CCA-250 coupling?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThat one is TKP86003, chart no. 8A, and it runs 34.2 mm. It belongs to the 98 mm CCA-250 accessory family rather than this one.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it include any optics?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo, it is a mechanical coupling only.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi's no. 8 coupling: 22.5 mm of light path between a telescope-side accessory train and a Wide Mount T-ring. With the Wide Mount ring for your camera body, the connection is complete — and if you would like a second pair of eyes on the spacing, send us the rest of your train and we will work it out with you.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54054832373871,"sku":"TAK-TKP31003","price":140.14,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TKP31003_1.jpg?v=1787024985"},{"product_id":"takahashi-visual-coupling-l-adapter","title":"Takahashi Visual Coupling L Adapter","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Coupling (L) is the long version of the coupling ring Takahashi supplies with several of its refractors — a plain mechanical ring, no lens or mirror, with a published 20 mm light path. That is twice the 10 mm of the Coupling (S) it sits beside on the system charts, where it carries no. 14L.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if a visual train comes up short of focus with the standard coupling in place, or if you are building a second train and want the longer of the two from the start.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoupling (L) — Takahashi part TKP00104:\u003c\/strong\u003e the long member of Takahashi's M55.9 coupling pair, listed as no. 14L.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 mm light path:\u003c\/strong\u003e ten millimetres more than the Coupling (S), which is often enough to push a diagonal and eyepiece out to where they come to focus.\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 where the shorter Coupling (S) leaves the train sitting too far inside focus.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIt mates with the same M55.9 accessory chain as the Coupling (S), and the two thread into the same places — choosing between them is a question of how much length your train needs, nothing more. The 20 mm figure is what this ring adds to your optical path rather than something you would take off the part with calipers, and the \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e lists it alongside the back focus target for each Takahashi telescope.\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\u003eHow does it differ from the Coupling (S)?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eLength, and nothing else. The S is TKP00103 at 10 mm; this one is TKP00104 at 20 mm.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it change magnification or add optical power?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — it is a mechanical spacer, and its only effect on the train is the 20 mm it occupies.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe 20 mm coupling from Takahashi's M55.9 pair, for visual trains that need more length than the 10 mm Coupling (S) gives them. If you are not certain which of the two your telescope wants, send us the model and the rest of the train and we will work it out with you.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54054833619055,"sku":"TAK-TKP00104","price":62.92,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TKP00104_1.jpg?v=1787024985"}],"url":"https:\/\/ontariotelescope.com\/collections\/takahashi-adapters.oembed?page=2","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}