Celestron Astro Fi 90mm Refractor Telescope


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The Astro Fi 90mm Refractor is a fully featured telescope that can be controlled with your smart phone or tablet using the free Celestron SkyPortal app. Celestron’s SkyPortal app replaces the traditional telescope hand control for a 100% wireless experience. Just hold your smart device up to the night sky. When you find an object you’d like to view, tap the screen. Your Astro Fi telescope automatically slews to the object, while the screen displays information about it. The Astro Fi 90 creates its own wireless connection, so it can communicate with your device even in remote locations where WiFi or cellular networks aren’t available. Getting ready to observe is quick and painless thanks to Celestron’s award-winning SkyAlign technology. Center any three bright objects in the eyepiece, and your telescope calculates its position. You can even generate a Sky Tour of all the best celestial objects to view based on your exact time and location.SpecificationsOptical Deisgn: RefractorAperture: 90 mm Focal Length: 910 mm Focal Ratio: 10.1Focal Length of Eyepiece 1 (mm): 25 mm Magnification of Eyepiece 1: 36xFocal Length of Eyepiece 2 (mm): 10 mm Magnification of Eyepiece 2: 91xFinderscope: StarPointerStar Diagonal: 1.25″Mount Type : Single Fork Arm AltazimuthAccessory Tray: Includes rubberized smartphone or tablet holderTripod: AluminumHighest Useful Magnification: 213xLowest Useful Magnification: 13xLimiting Stellar Magnitude: 12.3Resolution (Rayleigh): 1.54 arc seconds arc secondsResolution (Dawes): 1.29 arc seconds arc secondsLight Gathering Power (Compared to human eye): 165xOptical Coatings: Fully CoatedOptical Tube Length: 37.2 in/94.5 cm in (945 mm)Total Telescope Kit Weight: 14.2 lbs (6.44 kg)Slew Speeds: Up to 3 deg/secondTracking Rates: Sidereal, Solar, and LunarAlignment Procedures: SkyAlign, 3-Star Align, Solar System AlignCommunication Ports: Aux port for optional hand controlDatabase: Over 120,000 objects including 220 of the best deep sky and solar system objects