TwinStar Silver 6" iOptron Computerized GPS Reflector Telescope 150mm (6 inch) objective mirror, 1400mm overall focal length Short tube design yields maximum 400x magnification 25mm & 10mm Plossl 1.25" Diameter Eyepieces Included iOptron SmartStar-G Computer Controlled GPS Mount iOptron GoToNova Controller with 50,000 Celestial Object Database