The telescope optics: This Skywatcher Maksutov Cassegrain telescope is very compact for its aperture and powerful and with its high-resolution multi-coated optics it is suitable at medium to high resolution for discovering surface details on the moon as well as for observing planets and double stars, it shows but also brighter deep sky objects. In addition, it can also be used very well for nature observation. Scope of delivery: 150mm Maksutov Cassegrain telescope 9×50 viewfinder 2″ diagonal eyepiece: 28mm 2″ LET mounting rail! Power supply and batteries are not included!