Computerized GoTo System - The advanced GoTo system on the Celestron 127SLT telescope allows users to easily locate and track celestial objects with accuracy and precision.  SkyAlign Technology - The SkyAlign technology allows users to quickly align the telescope with any three bright objects in the sky for quick and easy setup.  StarBright XLT Coating - The StarBright XLT Coating on the 127SLT enhances light transmission for brighter and clearer images of celestial objects.  127mm Aperture - The 127mm aperture on the Celestron 127SLT delivers bright and detailed views of the moon, planets, galaxies, and more.  Compact and Portable - The Celestron 127SLT is a compact and lightweight telescope that is easy to set up and take on the go, making it perfect for backyard viewing or travel. Optical design: Maksutov-Cassegrain Caliber: 127 mm Focal length: 1500 mm Focus ratio: F12 Eyepiece 1: 25 mm (60 times) Eyepiece 2: 9 mm (167 times) Finder Mirror: Red Dot Finder Zenith mirror: 1.25 inches Carriage: Motor-driven theodolite Accessory tray: quick release without tools Tripod: steel 1.25 inches The highest effective magnification: 300 times Minimum effective magnification: 18 times Limit magnitude: 13th magnitude Resolution (Rayleigh limit): 1.1 arcsec Resolution (Dow limit): 0.91 arcsec Concentrating power: 329 times (relative to human eyes) Field of view: 0.83 degrees (standard eyepiece 1) Linear field of view: 13 meters/1000 yards Coating: Full coating Rotation speed: 9 kinds Tracking speed: star speed, sun speed, moon speed Tracking mode: theodolite, equatorial (northern hemisphere), equatorial (southern hemisphere) Calibration mode: sky calibration, automatic two-star calibration, one-star calibration, two-star calibration, solar system celestial body calibration Computerized hand controller: fully computerized and upgradeable Database: 4000 targets GPS: Optional SkySync GPS accessory (93969)