{"product_id":"takahashi-m52-to-m54-adapter-ring","title":"Takahashi M52 to M54 Adapter Ring","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA Takahashi thread adapter ring that converts between M52 and M54 in an imaging or visual train. Thread rings like this are what let a corrector, spacer and camera adapter from different points in the range join up without an improvised solution in the middle.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you have an M52 thread on one side of your train and an M54 on the other and need Takahashi's own ring to bridge them.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM52 to M54 conversion:\u003c\/strong\u003e the two thread standards named in the model.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical only:\u003c\/strong\u003e no optical elements — it does not change focal length, focal ratio or field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTakahashi-made:\u003c\/strong\u003e machined to Takahashi's own thread tolerances.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eJoining M52 and M54 components in a Takahashi imaging train — between a reducer or flattener and a camera adapter, or between spacers.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi publishes the thread sizes but not the ring's optical length, and optical length is what decides whether your train still lands on its required backfocus. Send us the corrector, spacers and camera you are joining and we will work the total through with you before you order.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eOptical length is not published:\u003c\/strong\u003e every ring in a train adds to the backfocus total. If your corrector has a spacing figure to hit, that total is the thing to get right — and it is a calculation we are happy to do for you.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMechanical only:\u003c\/strong\u003e this ring changes the thread, nothing else.\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 between the two components. The thinking happens beforehand, in the backfocus total.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat threads does it convert?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eM52 and M54.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it change my focal length?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — there are no optics in it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know it will not upset my spacing?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSend us your train and we will add it up. That is the part worth checking, and it takes us a couple of minutes.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA Takahashi M52-to-M54 thread ring — the piece that joins two parts of an imaging train, with the backfocus total being the thing to confirm.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54085978095727,"sku":"TAK-TSB00262","price":41.0,"currency_code":"CAD","in_stock":true}],"url":"https:\/\/ontariotelescope.com\/products\/takahashi-m52-to-m54-adapter-ring","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}