{"product_id":"takahashi-extender-qe-1-6x-2-field-flattener","title":"Takahashi Extender-QE 1.6x 2\" Field Flattener for FSQ-106EDX4","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Extender-QE 1.6x is the five-element 2-inch extender built specifically for Takahashi's current FSQ-106EDX4 (\"New Q\") refractor, also published for the FSQ-130ED. It brings the FSQ-106EDX4's native 530mm f\/5.0 up to 850mm f\/8.0 while holding a flat, colour-corrected 44mm image circle, and doubles as a high-magnification visual accessory.\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-106EDX4 or FSQ-130ED and want tighter framing on small deep-sky targets than the astrograph's native wide field delivers, or higher-power lunar and planetary views without switching telescopes.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFive-element optical design:\u003c\/strong\u003e delivers a flat, colour-corrected, high-contrast image at the extended focal length rather than a simple magnifier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.6x extension:\u003c\/strong\u003e 530mm f\/5.0 becomes 850mm f\/8.0 on the FSQ-106EDX4.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e44mm image circle held constant\u003c\/strong\u003e at the extended focal length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure mounting features:\u003c\/strong\u003e an anti-slip groove and dual thumbscrews keep the extender seated through the imaging or visual session.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully multi-coated optics\u003c\/strong\u003e for high-contrast imaging and visual use alike.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eBuilt for the FSQ-106EDX4's New Q focuser, the Extender-QE 1.6x uses a five-element design rather than a simple Barlow doublet, which is why the image circle stays a corrected 44mm at the extended 850mm f\/8.0 rather than degrading toward the edges the way a plain magnifier would. Takahashi also publishes the same part for the FSQ-130ED, where it extends 650mm f\/5.0 to 1040mm f\/8.0.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTighter deep-sky framing on the FSQ-106EDX4 or FSQ-130ED, plus higher-magnification lunar and planetary visual observing without short-eye-relief eyepieces.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi publishes this extender for two current telescopes.\u003c\/p\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eTelescope\u003c\/th\u003e\n\u003cth\u003eNative\u003c\/th\u003e\n\u003cth\u003eWith Extender-QE 1.6x\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\u003eFSQ-106EDX4 (New Q)\u003c\/td\u003e\n\u003ctd\u003e530mm f\/5.0\u003c\/td\u003e\n\u003ctd\u003e850mm f\/8.0\u003c\/td\u003e\n\u003ctd\u003eΦ44mm\u003c\/td\u003e\n\u003ctd\u003e117.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSQ-130ED\u003c\/td\u003e\n\u003ctd\u003e650mm f\/5.0\u003c\/td\u003e\n\u003ctd\u003e1040mm f\/8.0\u003c\/td\u003e\n\u003ctd\u003eΦ44mm\u003c\/td\u003e\n\u003ctd\u003e117.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003eThis is the part for the current FSQ-106EDX4; the earlier fluorite FSQ-106 and Sky-90 use the separate Extender-Q 1.6x, also carried by Ontario Telescope. For spacing your full imaging train, see the \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eNot the same part as the original Extender-Q:\u003c\/strong\u003e the earlier fluorite FSQ-106 and Sky-90 need the separate Extender-Q 1.6x rather than this one.\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 seats into the 2-inch focuser with an anti-slip groove and dual thumbscrews, and the 117.5mm back focus is fixed by the unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTighter deep-sky framing and higher-power lunar\/planetary imaging on the FSQ-106EDX4 or FSQ-130ED.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this fit an older fluorite FSQ-106?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — that telescope uses the separate Extender-Q 1.6x. Send us your FSQ-106's markings if you are not certain which generation you have and we will confirm the right part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it work for visual observing as well as imaging?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — it functions as a high-magnification visual accessory in addition to a photographic extender.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Extender-QE 1.6x extends the FSQ-106EDX4 to 850mm at f\/8.0 with a flat, colour-corrected 44mm image circle, and does the same for the FSQ-130ED at 1040mm f\/8.0.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047120752751,"sku":"TAK-TKA36595","price":772.2,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tsq0106qe_2_6.jpg?v=1786914418","url":"https:\/\/ontariotelescope.com\/products\/takahashi-extender-qe-1-6x-2-field-flattener","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}