Sky-watcher Explorer-250pds Parabolic Dual-speed Newtonian Reflector Ota by Sky-Watcher
Sky-watcher Explorer-250pds Parabolic Dual-speed Newtonian Reflector OtaSky-Watcher Explorer-250PDS 254mm (10″”) f/1200 Parabolic Dual-Speed Newtonian Reflector Optical Tube Assembly. The new Sky-Watcher EXPLORER-250PDS Newtonian Reflector incorporates the same superb mirror-set as the Explorer-250P Black Diamond Series, but with two significant advantages. A Dual-Speed 10:1 ratio focuser is now included for excellent focusing precision. Also the tube