Sky-Watcher Explorer-200P (HEQ5 PRO) 200mm (8"") f/1000 Parabolic Syn Scan GO-TO Newtonian Reflector Telescope. All Sky Watcher Black Diamond Newtonian Reflectors feature 0.5mm ultra-thin secondary mirror supports to reduce diffraction spikes & light loss, & high quality Paraboloidal primary mirrors to eliminate spherical aberration. The mirrors are ?parabolised' to bring all the light rays to the same focal point to produce sharp, contrasty images which are full of detail. Ideal for Planetary & deep sky observation.