The Meade DS-2000 models are easy to operate but sophisticated, fully computer-guided GO TO telescopes. All models share the Meade lightweight, portable and reliable DS-2000 single arm robotic mount with Model 494 Autostar Computer Keypad. This incredible technology knows the night sky right out of the box. Turn it on, and after a brief alignment procedure, your telescope is ready to take you to any object in its over 14,000-object library or take you on a guided tour of the heavens. See more objects in one night than Galileo saw in a lifetime. The Meade DS-2000 models are easy to operate but sophisticated, fully computer-guided GO TO telescopes. The Meade DS-2114AT-TC Altazimuth Reflecting Telescope features a mirror diameter of 114mm (4.5), focal length of 1000mm and focal ratio of f/8.8.