CGE Pro Mount - General Features •Holds a maximum instrument capacity of 90 lbs •+/-9 arc second tracking accuracy, which can be further reduced with PEC •Permanent programmable periodic error correction (PEC) - corrects for periodic tracking errors inherent to all worm drives •CGE PRO computerized Equatorial mount •Heavy duty stainless steel tripod adjustable from 38 - 55" •One 22 lbs counterweight •Weighs 154 lbs CGE Pro Mount - Computerized Mount Features •Proven NexStar computer control technology •40,000 object database with over 100 user-definable objects and expanded information on over 200 objects •New All-Star Polar Alignment routine for both Northern and Southern Hemispheres. •Software Features include: Database Filter Limits, Hibernate, five alignment methods and user-defined slew limits. •Flash upgradeable hand control software and motor control units for downloading product updates over the Internet •Custom database lists of all the most famous deep-sky objects by name and catalog number; the most beautiful double, triple and quadruple stars; variable star; solar systems; objects and asterisms •Double line, 16-character Liquid Crystal Display Hand Control with backlit LED buttons for easy operation of goto features •12VDC Servo Motors with integrated optical encoders •Drive Motors - High quality motors with seven slot skewed armature to minimize magnetic cogging for quiet operation and long life. Precision made cut-steel gears in gearbox for Improve tracking precision. •Bearing and Shaft - Main shafts are made from 1.57" diameter steel tubing with .40" wall thickness with two preloaded 2.68" O.D. tapered roller bearings on each axes •Precision worm drive system - .75" pitch dia. precision made steel worm preloaded with two .87" OD ball bearings to minimize run-out (a source of periodic error). 255 tooth 6" pitch dia. precision made worm wheel with enveloping brass teeth •Spring loaded DEC worm to minimize backlash and for easy guiding. •4 point RA and DEC clutch system for no-slip pointing precision •Autoguide port, PC port and auxiliary ports located on the electronic pier for long exposure astrophotography •One 4.72" O.D. thrust bearing and one 4.13" O.D. thrust bearing on each axes provide a large thrust surface for additional stability. •Rugged 9-pin thread on motor cables •Latitude range: 10° to 65° northern or southern hemispheres •RS-232 communication port on hand control to control the telescope via a personal computer •Includes NexRemote telescope control software, for advanced control of your telescope via computer •GPS-compatible with optional CN16 GPS Accessory (93967)