The Sky-Watcher SKYMAX-102 SynScan™ AZ GOTO 102mm (4") f/1300 cOMPUTERISED MAKSUTOV-CASSEGRAIN.This compact telescope, with its high-resolution multi-coated optical system, excels at medium-to-high-powers for the examination of the surface detail on the Moon, planets and also for double-star observations. Also useful for terrestrial use. This telescope comes with 2 eyepieces (1.25") of 10mm and 25mm and magnification of x30 and x52, the diameter of the primary mirror is 102mm and the focal lenght is 1300mm (f12.7). The Highest practical power (potential) x204.Thsi telescope comes with SynScan™ AZ GoTo Computerised Alt-Azimuth HD Go-To Mount adn stainless steel tripod with accesory tray. Power Requirement: 12v DC 1Amp Power Supply (Tip Positive) or AA Batteries (not supplied).