Celestron NexStar Evolution 8 Brand New Includes Two Year Warranty The Celestron 12091 is a 8-inch Schmidt-Cassegrain telescope with premium StarBright XLT coatings and fully computerized GoTo mount with high-performance brass worm gears and motors for improved tracking accuracy. The light transmission is increased throughout the entire optical path with anti-reflection multicoated lenses, highly reflective multicoated mirrors and 4-element rare-earth glass. The smart device can be connected to the telescope via direct WiFi connection and expands the capabilities and functionality. The Celestron 12091 features Multi-layer mirror coatings made from layers of aluminum, SiO2 quartz , TiO2 titanium dioxide , and Si02 silicon dioxide . The reflectivity is flat across the light spectrum for both astrophotography/astroimaging and visual observation. It has a long life lithium-ion phosphate battery providing up to 10 hours of continual use on a single charge. The system has a tray which keeps accessories and equipment safe and organized and no tools required to set up mount and tripod. 12091 Features Integrated Wi-Fi For Built-In Wireless Network 7.99 Inch Aperture 203mm StarBright XLT Multcoated Optics 480x Maximum Magnification Focal Length 2032mm, f/10 Focal Ratio NexRemote Provides Full Computerized Hand Control Rechargeable Battery, up to 10hr Runtime StarBright XLT SkyAlign Technology Allows To Align On Any 3 Bright Celestial Objects Making Fast Easy Alignment Process Heavy Duty Steel Tripod Adjustable Single Fork Arm Altazimuth Mount 12091 Specifications Optical Design Schmidt Cassegrain Aperture 203.2 mm Focal Length 2032 mm Focal Ratio 10 Focal Length of Eyepiece 1 40 mm Focal Length of Eyepiece 2 13 mm Magnification of Eyepiece 1 51x Magnification of Eyepiece 2 156x Finderscope StarPointer Star Diagonal 1.25 Mount Type Single Fork Arm Altazimuth Tripod Stainless Steel Power Requirements Internal battery included HIghest Useful Magnification 480x Lowest Useful Magnification 29x Limiting Stellar Magnitude