{"product_id":"sky-watcher-quattro-250p-imaging-newtonian","title":"Quattro 250P Imaging Newtonian","description":"\u003cp\u003eThe Sky-Watcher Quattro 250P Imaging Newtonian is a versatile telescope designed for astronomy enthusiasts who seek a swift and powerful instrument for both astrophotography and visual exploration. Its fast f\/4 focal ratio allows for significantly shorter exposure times, making it an excellent choice for capturing deep-sky objects with clarity and efficiency.\u003c\/p\u003e\r\n\u003cp\u003eThis telescope combines a large aperture with advanced coatings and an optimized optical design, catering to users aiming to capture vivid images or enjoy detailed celestial views without compromise.\u003c\/p\u003e\r\n\u003ch6\u003eRapid Imaging Capability\u003c\/h6\u003e\r\n\u003cp\u003eWith its swift f\/4 focal ratio, the Quattro dramatically reduces exposure durations, enabling astrophotographers to collect light up to six times faster than traditional slower telescopes. This efficiency opens new possibilities for capturing faint deep-sky phenomena with enhanced detail.\u003c\/p\u003e\r\n\u003ch6\u003ePrecision Optics\u003c\/h6\u003e\r\n\u003cp\u003eThe borosilicate mirrors are treated with a specialized Radiant Aluminum Quartz coating, delivering high reflectivity that ensures crisp, bright images. The parabolic shape of the primary mirror is tailored to optimize image quality across the field, benefiting both imaging and visual applications.\u003c\/p\u003e\r\n\u003ch6\u003eEnhanced Illumination for Imaging Sensors\u003c\/h6\u003e\r\n\u003cp\u003eAn oversized secondary mirror is incorporated to maximize light delivery to full-frame DSLR and CCD cameras, ensuring even illumination and minimizing vignetting, which is crucial for high-quality astrophotography.\u003c\/p\u003e\r\n\u003ch6\u003eRobust and Stylish Construction\u003c\/h6\u003e\r\n\u003cp\u003eThe optical tube is crafted from rolled steel and finished with a distinctive glossy metal-flake Black Diamond coating, combining durability with aesthetic appeal suitable for serious observers.\u003c\/p\u003e\r\n\u003ch6\u003eFine Focusing Control\u003c\/h6\u003e\r\n\u003cp\u003eEquipped with a 10:1 dual-speed 2-inch Crayford focuser, this telescope allows for both rapid adjustments and precise fine-tuning of focus, a vital feature for achieving sharp images during long exposure sessions.\u003c\/p\u003e\r\n\u003ch6\u003eComplete Accessory Package\u003c\/h6\u003e\r\n\u003cp\u003eThe package includes essential accessories such as a 9x50 finderscope for easy target acquisition, tube rings, a V-style dovetail plate for versatile mounting options, and adapters for eyepieces of different sizes, providing a ready-to-use solution for diverse observational needs.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable class=\"spec-table\"\u003e\r\n\u003ctbody\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eOptical Design\u003c\/th\u003e\r\n\u003ctd\u003eNewtonian\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003ePrimary Aperture\u003c\/th\u003e\r\n\u003ctd\u003e254 mm\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eTrue Aperture\u003c\/th\u003e\r\n\u003ctd\u003e257 mm\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eFocal Length\u003c\/th\u003e\r\n\u003ctd\u003e1000 mm\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eFocal Ratio\u003c\/th\u003e\r\n\u003ctd\u003ef\/4\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eMirror Coatings\u003c\/th\u003e\r\n\u003ctd\u003eRadiant Aluminum Quartz (RAQ)™ with 94% reflectivity\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eGlass Type\u003c\/th\u003e\r\n\u003ctd\u003eBorosilicate\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eSecondary Diameter\u003c\/th\u003e\r\n\u003ctd\u003e89 mm\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eSecondary Obstruction (Diameter)\u003c\/th\u003e\r\n\u003ctd\u003e35%\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eSecondary Obstruction (Area)\u003c\/th\u003e\r\n\u003ctd\u003e12%\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eDawes Limit\u003c\/th\u003e\r\n\u003ctd\u003e0.46\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eRayleigh Limit\u003c\/th\u003e\r\n\u003ctd\u003e0.55\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eLimiting Magnitude\u003c\/th\u003e\r\n\u003ctd\u003e14.5\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eMinimum Magnification\u003c\/th\u003e\r\n\u003ctd\u003e36\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eMaximum Magnification\u003c\/th\u003e\r\n\u003ctd\u003e500\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eLight Gathering Compared to Next Size Down\u003c\/th\u003e\r\n\u003ctd\u003e57%\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eFocuser\u003c\/th\u003e\r\n\u003ctd\u003e2\" Dual Speed Crayford (10:1)\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eFocuser Draw Tube Thread\u003c\/th\u003e\r\n\u003ctd\u003eMale M54x0.75 (after eyepiece holder removal)\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eOTA Length (Retracted\/Extended)\u003c\/th\u003e\r\n\u003ctd\u003e36.5\"\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eOTA Outer Diameter\u003c\/th\u003e\r\n\u003ctd\u003e11.375\"\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eOTA Weight (with accessories)\u003c\/th\u003e\r\n\u003ctd\u003e36.5 lbs\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eIncluded Finder\u003c\/th\u003e\r\n\u003ctd\u003e9x50 Finderscope\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eIncluded Accessories\u003c\/th\u003e\r\n\u003ctd\u003eTube Rings, V-style Dovetail Plate, 1.25\" and 2\" Eyepiece Adapters\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eCountry of Manufacture\u003c\/th\u003e\r\n\u003ctd\u003eChina\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003c\/tbody\u003e\r\n\u003c\/table\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":45980848881863,"sku":"1-19-002-0007","price":1325.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/9575\/6487\/files\/1-19-002-0007-01.jpg?v=1766505275","url":"https:\/\/snowflakeskies.com\/products\/sky-watcher-quattro-250p-imaging-newtonian","provider":"Snowflake Skies","version":"1.0","type":"link"}