- The Sky-Watcher Quattro 250P Imaging Newtonian 10". This OTA is in very good shape. I only used once because my EQ (NEQ6 pro) was not able to handle its weight to tracking accurately, otherwise, the GOTO had no problems. The OTA is clean and ready to go. Sky-Watcher’s proprietary 2 inch dual-speed linear track focuser provides precise 10:1 rack-and-pinion focusing with zero image shift. The focusers are rotatable.
Focuser 2" Dual Speed Crayford
OTA Length (Retract/Ext.) 36.5"
OTA Outer Diameter 11.375"
OTA Weight (with accessories) 36.5
Optical Design: Newtonian Reflector
Aperture (mm): 254 mm (10 in)
Focal Length: 1000 mm
Focal Ratio: f/4
9x50 Finder scope
Tube Rings: Tube rings with V-style dovetail bar
Optical Coatings: Fully multi-coated
Filed under: High-End Telescope Auctions (USA)