{"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","url":"https:\/\/ontariotelescope.com\/products\/takahashi-tsa-102-m72-to-f72-aux-extension-tube-52mm","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}