Galileo G102MD 1100 x 102mm Catadioptric Telescope w/Motor Drive Catadioptric telescope has a correcting lens built-in into the optical tube Fully motorized, dual-axis German equatorial mount 102mm primary mirror accepts 28 percent more light 2 eyepieces (6.8mm-16mm zoom & 20mm); 3x Barlow lens 1-year warranty