Celestron Sky-Watcher 10-Inch Dobsonian Telescope - Tube OnlyThe Celestron Sky Watcher 10 Inch Dobsonian Telescope's Tube is mechanically simple and results in a large aperture telescope that can be reasonably handled and transported by one individual. This innovation gives Sky Watcher users tremendous functional ease of transportability. An 8x50mm Right Angle optical viewfinder provides both magnification and light gathering to help narrow your search for the stars. The standard equipment backlash free 2 Inch