Sky watcher explorer 130p eq2 130mm 51 f650 parabolic newtonian reflector telescope the explorer 130p models feature premium quality parabolic primary mirrors normally found in larger more expensive telescopes to eliminate spherical aberrations producing even sharper higher contrast images which are full of detail a parabolic or more accurately a paraboloidal mirror is ground to a shape which brings all incoming light rays to a perfect focus on axis in addition they feature 0