Optical Design: |
EdgeHD |
Aperture: |
203.2mm (8") |
Focal Length: |
2032mm (80") |
Focal Ratio: |
f/10 |
Focal Length of Eyepiece 1: |
25mm (.98") |
Magnification of Eyepiece 1: |
81x |
Finderscope: |
6x30 |
Star Diagonal: |
1.25" Star Diagonal |
Optical Tube: |
Aluminum |
Highest Useful Magnification: |
480x |
Lowest Useful Magnification: |
29x |
Limiting Stellar Magnitude: |
14 |
Resolution (Rayleigh): |
0.69 arc seconds |
Resolution (Dawes): |
0.57 arc seconds |
Light Gathering Power (Compared to human eye): |
843x |
Secondary Mirror Obstruction: |
64mm (2.5") |
Secondary Mirror Obstruction by Diameter: |
31% |
Secondary Mirror Obstruction by Area: |
9.77% |
Optical Coatings: |
StarBright XLT |
Optical Tube Length: |
432mm (17") |
Optical Tube Diameter: |
238mm (9.37") |
Optical Tube Weight: |
12.5 lbs (5.67 kg) |
Dovetail: |
CGE Dovetail Bar |
Mount Type: |
Computerized Equatorial |
Instrument load capacity: |
40 lbs (18 kg) |
Height adjustment range (includes mount and tripod): |
1346mm - 1651mm (53" – 65") |
Tripod Leg Diameter: |
50.8mm (2") Steel tripod with graduated markings on lower section |
Latitude adjustment range: |
15° - 70° |
Mount Head Weight: |
40 lbs (18.14 kg) |
Accessory Tray: |
Yes |
Tripod Weight: |
20 lbs (9 kg) |
Weight of Counterweights: |
1 x 17 lbs |
Slew Speeds: |
9 slew speeds - max speed 4.5°/second |
Tracking Rates: |
Sidereal, Solar and Lunar |
Tracking Modes: |
EQ North and EQ South |
GPS: |
N/A |
Dovetail Compatibility: |
Dual saddle plates (CG-5 and CGE saddle) |
Number of Auxiliary Ports: |
2 AUX Ports (1x Hand control Port and 1x AUX Port for optional accessories) |
Autoguide Port: |
Yes |
USB Port: |
Yes, input on Hand Control |
Power Requirements: |
12V DC, 3.2 amps |
Motor Drive: |
DC servo motors |
Alignment Procedures: |
2-Star Align, 1-Star Align, Solar System Align, Last Alignment, Quick Align |
Periodic Error Correction: |
Yes |
Computerized Hand Control: |
2 line x 18 character backlit Liquid Crystal Display, 19 LED backlit buttons, USB 2.0 Port for PC connection |
NexStar+ Database: |
40,000+ objects, 100 user defined programmable objects Enhanced information on over 200 objects |
Software: |
Celestron Starry Night Special Edition Software and SkyPortal App |
Total Kit Weight: |
90.5 lbs (41 kg) |
Included Items: |
CGEM II Equatorial Head Tripod Accessory Tray 1 x 17 lbs counterweight NexStar+ Hand Control DC Power Cable (item#18769) Hand Control Holster |