Go
after even the most elusive and faint deep-sky targets with the Orion
10 inch f/8.0 Ritchey-Chretien Astrograph. Featuring virtually coma-free
optics for superb imaging performance, the Orion 10 inch f/8.0
Ritchey-Chretien Astrograph boasts a plethora of deluxe features. Its
precision hyperbolic primary and secondary mirrors are made of highest
quality quartz optical glass with enhanced reflectivity (96%) aluminum
coatings. The machined aluminum, dual-speed (10:1) 3 inch modified Cray
ford focuser with linear track bearing provides rigid, backlash-free
support for hefty imaging accessories. Eight knife-edge
computer-positioned internal light baffles in the optical tube, primary
mirror tube baffles, and a baffled secondary mirror shield ensure
maximum image contrast and brightness. Three 1.5 inch DC cooling fans
built into the rear cell help to reduce cool down time for the telescope
to reach thermal equilibrium. Two wide Losmandy-style dovetail mounting
plates are attached to both the top and bottom of the tube for easy
mount attachment and use of optional guide scope for guided CCD imaging
pursuits.