The telescope optics: The Skywatcher Skyliner-250PX Flextube SynScan GoTo Dobsonian telescope contains a 254mm parabolic Newtonian lens. With its large aperture, it is very well suited to observe even weaker deep sky objects in high resolution and contrast. But planets, the moon and all other astronomical objects of the night sky also give a lot of pleasure. The telescope mount: In combination with the power of the large telescope tube, the particularly transportable, patented, collapsible FlexTube design with the SynScan Computer GoTo control brings over 42,900 objects of the sky to your eyes and automatically guides you – as easy as a walk through the park! The patented dual-encoder design allows the telescope to be moved manually at any time and place without losing the calibration of the system. You don’t have to wait forever for the telescope to approach a new object in the sky, you can simply push it close by hand and then let the computer take care of the exact positioning. Scope of delivery: 254mm Flextube Newtonian telescope tube Dobsonian mount with accessory tray and built-in heavy-duty servo motors 2″ Crayford focuser with 1.25″ adapter and camera connection 9×50 viewfinder eyepieces: 10mm & 25mm SynScan V.5 handheld control box! Power supply and batteries are not included!