Sky-Watcher Skyliner-150P Classic Parabolic Dobsonian Telescope

Sky Watcher Skyliner 150P Classic 153mm 6"" f1200 Parabolic Dobsonian Telescope. These instruments offer an incredible aperture to price ratio. The Dobsonian mount, popularized by John Dobson in the late 1970's, is a very simple but effective method of mounting a Newtonian Reflector, based on the alt azimuth principle. Fast and easy to set up, the Dobsonian mount consists of a box type mounting which allows the telescope to pivot in altitude, while the box itself is rotated on a base in azimuth. The secret of the design is to correctly balance the optical tube and to use frictional materials, which allow it to move easily when nudged but to stay in position when not. All Sky Watcher Dobsonian models feature 0.5mm Ultra Thin Secondary Mirror Supports to reduce diffraction spikes & light loss, and high quality Paraboloidal primary mirrors to eliminate spherical aberration.