Sky watcher explorer 150pl eq3 pro 150mm 6 f1200 parabolic synscan go to newtonian reflector telescope all sky watcher black diamond newtonian reflectors feature 05mm ultra thin secondary mirror supports to reduce diffraction spikes and light loss and 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