Manufacturer |
Celestron |
Optical Design |
EdgeHD |
Aperture (mm) |
203.2 mm (8 in) |
Focal Length (mm) |
2032 mm (80 in) |
Focal Ratio |
10 |
Eyepiece 1 (mm) |
40 mm (1.57 in) |
Magnification 1 |
51 x |
Finderscope |
50 mm Finderscope with quick release bracket |
Star Diagonal |
1.25 |
Mount |
Dual Fork Arm |
Optical Tube |
Aluminum |
Accessory Tray |
Die Cast Aluminum Leg Brace / Eyepiece holder |
Tripod |
Heavy Duty Stainless Steel Adjustable |
Power Supply |
Car battery adapter |
Highest Useful Magnification |
480 x |
Lowest Useful Magnification |
29 x |
Limiting Stellar Magnitude |
14 |
Resolution (Rayleigh) |
0.69 arc seconds |
Resolution (Dawes) |
0.57 arc seconds |
Light Gathering Power |
843 x |
Angular Field of View (deg) |
0.8 ° |
Linear Field of View (@1000 yds) |
42 ft (13 m) |
Secondary Mirror Obstruction |
2.5 in (64 mm) |
Secondary Mirror Obstruction by Diameter |
31 % |
Secondary Mirror Obstruction by Area |
9.77 % |
Optical Coatings |
Starbright XLT Coating |
Telescope Weight |
43 lbs (20 kg) |
Tripod and Mount Weight |
27 lbs (12 kg) |
Motor Drive |
DC Servo motors with encoders, both axes |
Motor Resolution |
0.1406 |
Tracking Rates |
Sidereal, Solar and Lunar |
Tracking Modes |
Altazimuth, EQ North and EQ South |
Alignment Procedures |
SkyAlign, Auto Two-Star Alignment, Two-star Align, SolarSystem Align, EQ North Align, EQ South Align, One-Star Align |
Software Precision |
24 bit, 0.08 calculations |
Periodic Error Correction |
Permanently Programmable |
Fork Arm |
Dual fork arm, cast Aluminum with detachable HC cradle |
Gear |
Gear: 6" Brass main gear, 180 tooth, .75" Stainless steel worm gear |
Bearings |
9.8 azimuth bearing |
Motor Ports |
Aux Port, Autoguide Ports |
Communication Ports |
RS-232 communication port on hand control |
Computer Hand Control |
Flash upgradeable, double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons |
Database |
40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects |
Power Requirements |
12V DC 2.5A |
Cord Management |
Cord Wrap Software |
GPS |
Internal 16 channel |