{"product_id":"takahashi-toa-130-0-7x-toa-35-reducer","title":"Takahashi TOA-130 0.7x TOA-35 Reducer","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe TOA-35 Reducer 130 Set pairs Takahashi's 0.7x TOA-35 reducer with a CA Ring 130 sized for the TOA-130NS and TOA-130NFB, cutting the telescope's native 1000mm f\/7.7 down to 698mm f\/5.4. The reducer is a 4-element, 3-group ED glass design shared across the whole TOA-35 line — what changes between kits is which CA ring is bundled to match the telescope it's going on.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis kit suits TOA-130NS and TOA-130NFB owners who want a materially faster focal ratio for deep-sky imaging without leaving the TOA series' ED apochromat optics. At f\/5.4 it cuts exposure times substantially versus the native f\/7.7 while holding a flat Φ44mm image circle.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 elements in 3 groups, ED glass:\u003c\/strong\u003e the same optical design used across every TOA-35 reducer kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.7x reduction:\u003c\/strong\u003e takes the TOA-130NS\/NFB from 1000mm f\/7.7 to 698mm f\/5.4.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eΦ44mm corrected image circle:\u003c\/strong\u003e flat, sharp field suited to APS-C and smaller full-frame crops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBundled CA Ring 130:\u003c\/strong\u003e sized specifically for the TOA-130's mount, so the kit installs as a matched system.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe reducer threads to the CA Ring 130, which is what's bundled in this specific kit — the ring is what changes between TOA-35 Reducer kits, not the reducer optic itself. Back focus is 65.5mm on the TOA-130NS\/NFB. See the \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e for the full spacing chain.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eFaster deep-sky imaging on the TOA-130NS\/NFB where exposure time matters — nebulae, galaxies, and clusters that benefit from f\/5.4 over the native f\/7.7; general astrophotography where a shorter focal length better frames larger targets.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eTelescope\u003c\/th\u003e\n\u003cth\u003eResulting focal length\u003c\/th\u003e\n\u003cth\u003eResulting focal ratio\u003c\/th\u003e\n\u003cth\u003eImage circle\u003c\/th\u003e\n\u003cth\u003eBack focus\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTOA-130NS \/ TOA-130NFB (this kit)\u003c\/td\u003e\n\u003ctd\u003e698mm\u003c\/td\u003e\n\u003ctd\u003ef\/5.4\u003c\/td\u003e\n\u003ctd\u003eΦ44mm\u003c\/td\u003e\n\u003ctd\u003e65.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTOA-150B\u003c\/td\u003e\n\u003ctd\u003e775mm\u003c\/td\u003e\n\u003ctd\u003ef\/5.2\u003c\/td\u003e\n\u003ctd\u003eΦ44mm\u003c\/td\u003e\n\u003ctd\u003e62.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTSA-120\u003c\/td\u003e\n\u003ctd\u003e635mm\u003c\/td\u003e\n\u003ctd\u003ef\/5.3\u003c\/td\u003e\n\u003ctd\u003eΦ44mm\u003c\/td\u003e\n\u003ctd\u003e62.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003eThis is the same 0.7x reducer optic used on the TOA-150B and TSA-120, but bundled here with the CA Ring 130 sized for the TOA-130's mount. TOA-150B and TSA-120 owners use the sibling kit, the \u003cstrong\u003eTOA-35 0.7x Reducer and Camera Ring (TOA-150, TSA-102\/120)\u003c\/strong\u003e, which bundles the identical reducer with the larger CA Ring 150 instead — the two kits are not interchangeable between telescopes even though the optic inside them is the same.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSold as a matched kit:\u003c\/strong\u003e the CA Ring 130 is bundled with this reducer, so there's no separate ring to source for the TOA-130.\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 reducer threads to the included CA Ring 130, which is sized to install directly on the TOA-130NS\/NFB.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDeep-sky astrophotography on the TOA-130NS\/NFB where the 0.7x reduction to f\/5.4 shortens exposures versus native f\/7.7.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this the same reducer as the TOA-150 kit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe optic is identical. What differs is the bundled ring — this kit ships with CA Ring 130 for the TOA-130; the TOA-150\/TSA-120 kit ships with CA Ring 150 instead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat else do I need with it?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYour camera's own T-ring or adapter to complete the connection at the 65.5mm back focus figure.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA matched TOA-35 reducer kit for the TOA-130NS\/NFB, cutting the telescope to 698mm at f\/5.4 across a Φ44mm image circle, with the CA Ring 130 included.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047112691823,"sku":"TAK-TKA31580NS","price":1515.8,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tka31580ns_3.jpg?v=1786914087","url":"https:\/\/ontariotelescope.com\/products\/takahashi-toa-130-0-7x-toa-35-reducer","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}