{"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}],"url":"https:\/\/ontariotelescope.com\/products\/takahashi-fsq-130ed-aux-ring-27-5mm","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}