The telescope optics: The Skywatcher Skyliner 250PX Classic Dobsonian telescope contains a 254mm parabolic Newtonian optic. With the large aperture, it is very well suited to observing weaker deep sky objects in high resolution and contrast. But planets, the moon and all other astronomical objects in the night sky are also a lot of fun. The telescope mount: Dobsonian telescopes have an incredibly good price-performance ratio. The Dobsonian mount was introduced by John Dobson in the 1970’s and is a simple but efficient method of mounting a Newtonian telescope in azimuth. It is quick and easy to set up and allows movement in altitude and azimuth. The secret of the mount is the exact balance of the telescope and the use of special materials for friction that allow easy, gentle movement and keep the telescope safe when stationary. This mount was designed to be moved by hand. Sky-Watcher Dobsonian telescopes offer excellent performance when observing the moon, planets and deep sky objects such as galaxies and nebulae. Scope of delivery: 254mm Newtonian telescope tube Dobsonian mount with accessory tray Focuser with 2″ and 1.25″ connection Direct connection for DSLR camera 9×50 viewfinder Eyepieces: 10mm & 25mm! Power supply and batteries are not included in the scope of delivery!