 Explorer PDS Series Newtonian Telescopes Sky-Watcher's Explorer-PDS Telescopes are an advanced range of Newtonian reflectors designed for discerning users and astro-photographers. They incorporate the same high-quality parabolic primary mirrors as the Explorer-P Black Diamond series but with two significant advantages. A 10:1 dual-speed focuser allows you to obtain the accurate focus essential for astrophotography. Also, the tube length has been shortened slightly to accommodate prime focus photography. Optical performance at the edges of the field can be improved further by using the optional Sky-Watcher coma corrector (Prod.Code OV-20233). |