The Meade 70AZ-AR Altazimuth Refractor Altazimuth Refractor is great for families, kids and gifts. Lens diameter is approximately 2.75 inches. This will let you see craters on the Moon, the rings of Saturn, the cloud belts of Jupiter along with several of its moons, and detect countless star clusters, double stars, nebulas and more. Includes the amazing AutoStar Suite PC compatible DVD astronomy software to chart the night sky and telescope instructional video. Focal length of 700mm, focal ratio of f/10. Features a 1.25" rack-and-pinion focuser, altazimuth yoke type mount with vertical slow motion control, two MA eyepieces (9mm, 25mm), easy to use red dot viewfinder, diagonal mirror and height adjustable full size aluminium tripod with accessory tray. * Optical Design Refractor - Optical Diameter 70mm (2.8") * Mounting Type Altazimuth; Yoke-style with slow motion controls * Tripod Aluminum; full-length; adjustable with accessory tray * Eyepieces (1.25") MA9mm, MA25mm - Viewfinder 5x24 Viewfinder * Focal length, f/ratio 700mm; f/10 - Software AutoStar SuiteTM, PC-compatible DVD