{"product_id":"william-optics-mighty-cat-71","title":"William Optics Mighty Cat 71","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0610\/7702\/9116\/files\/MC-71-f32-fast.jpg?v=1792702004\" alt=\"\"\u003e\u003cbr\u003eDescription\u003c\/p\u003e\n\u003cp\u003eThe William Optics Mighty Cat 71 is a groundbreaking 71mm apochromatic astrograph engineered to redefine ultra-fast deep-sky imaging. It introduces an unprecedented, record-breaking f\/3.2 focal ratio—the fastest telescope William Optics has ever created—while featuring a 43.2mm image circle and the patented WIFD internal focusing system.\u003c\/p\u003e\n\u003cp\u003eThe ultra-fast f\/3.2 optical system drastically reduces required exposure times, helping capture faint nebulae, dark dust lanes, and expansive celestial structures in a fraction of the time. With its flat-field 7-element optics, stable internal focusing, and a playful design that hints at technology from another world, the Mighty Cat 71 is built for demanding deep-sky imaging with modern full-frame and cropped-sensor camera systems.\u003c\/p\u003e\n\u003cp\u003eKey Features:\u003cbr\u003eF\/3.2 Ultra-Fast Optics\u003cbr\u003eCaptures deep-sky objects with unparalleled efficiency, utilizing the fastest optical system in William Optics history to maximize photon collection and shorten exposure tracks.\u003c\/p\u003e\n\u003cp\u003e7-Element EVO Petzval Design\u003cbr\u003eProvides a naturally flat image field without requiring an additional field flattener, delivering sharp stars and clean detail across a wide imaging area.\u003c\/p\u003e\n\u003cp\u003e43.2mm Full-Frame Image Circle\u003cbr\u003eSupports full-frame, APS-C, and M4\/3 camera systems, giving astrophotographers total freedom for wide-field composition and high-resolution deep-sky imaging.\u003c\/p\u003e\n\u003cp\u003eWIFD (William Optics Internal Focuser Design)\u003cbr\u003eThe patented internal focusing system keeps the focusing mechanism centered inside the telescope, improving balance and helping avoid rear drawtube-related flexure or vignetting.\u003c\/p\u003e\n\u003cp\u003eSensor Tilt Xterminator (STX-R)\u003cbr\u003eFeatures a heavy-duty rear tilt and rotation interface designed to support modern imaging setups, reducing the chance of rear-end sag while retaining convenient sensor-squaring capability.\u003c\/p\u003e\n\u003cp\u003eAnti-Shrink Lens Cell Technology\u003cbr\u003eHelps maintain stable optical alignment under changing temperatures by minimizing the effects of material expansion and contraction around the lens cell.\u003c\/p\u003e\n\u003cp\u003eBuilt-In Patented Bahtinov Mask\u003cbr\u003eIntegrated into the front cap for quick and accurate focusing, making precise star focus easier in the field.\u003c\/p\u003e\n\u003cp\u003ePatented Handle Bar Design\u003cbr\u003eImproves handling, portability, and accessory mounting while maintaining the clean mechanical layout of the Mighty Cat platform.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0610\/7702\/9116\/files\/MC-71-Drawing-01.webp?v=1792702004\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0610\/7702\/9116\/files\/MC-71-parts.jpg?v=1792702004\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0610\/7702\/9116\/files\/Diagram_MC-71-SD.jpg?v=1792702004\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0610\/7702\/9116\/files\/MC71-single_mosaic.jpg?v=1792702004\" alt=\"\"\u003e\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":67859602768124,"sku":null,"price":3499.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0610\/7702\/9116\/files\/MC-71-side-2.jpg?v=1792702004","url":"https:\/\/all-startelescope.com\/products\/william-optics-mighty-cat-71","provider":"All-Star Telescope Canada","version":"1.0","type":"link"}