Meade ETX-60 Altazimuth GO TO Computer Refractor Telescopes Optical Design: Achromatic Refractor Optical Diameter: 60mm Focal Length: 350mm Focal Ratio: f/5 Maximum Useful Magnification: 200x Features of Meade ETX-60 AT Go To Computerized Telescopes: Internal flip-in Barlow lens 12V DC servo motors w/encoders Electric Slow Motion controls, 9-speed, both axes Bubble level/ compas Free Planetarium Software Includes Meade #494 Autostar with 9-speed controller and automatic GO TO capability to any of over 1400 celestial objects Meade ETX60 Telescope Package Contents: Meade ETX-60-AT Achromatic Refractor 494 Autostar Computer Controller Three Eyepieces 45 degree erecting prism Aluminum Tripod Back pack