Celestron CGEM II 800 Schmidt-Cassegrain telescope.
Celestron CGEM II 800 Schmidt-Cassegrain telescope
OVERVIEW
- 8" Schmidt-Cassegrain Optical Tube Assembly
- Aluminum Optical Tube
- Celestron's premium StarBright XLT coatings
- 2032 mm focal length (f/10)
- 25 mm eyepiece included (81x)
- Visual back allows for use with 1.25" accessories
- 6x30 finderscope to help accurately find objects
- Star diagonal provides more comfortable viewing position when observing objects that are high in the sky
- Includes dovetail rail compatible with CGE mount
TUBE SPECIFICATIONS
Optical Design |
Schmidt-Cassegrain |
Aperture (mm) |
203.2 mm (8 in) |
Focal Length |
2032 mm (80 in) |
Focal Ratio |
10 |
Focal Length of Eyepiece 1 (mm) |
25 mm (0.98 in) |
Magnification of Eyepiece 1 |
81 x |
Finderscope |
6x30 |
Star Diagonal |
1.25 |
Optical Tube |
Aluminum |
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 (Compared to human eye) |
843 x |
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 |
Optical Tube Length |
17 in (432 mm) |
Optical Tube Weight |
12.5 lbs (5.67 kg) |
Dovetail Compatibility |
CGE Mount |
MOUNT SPECIFICATION
Mount Type |
German Equatorial Mount |
Tripod |
2” Steel tripod with graduated markings on lower section |
Dovetail Mount |
Directly connects to both CG-5 & CGE dovetail bars |
Payload Capacity |
40 lbs. |
Latitude Range |
15º – 70º |
Power Requirements |
12 VDC, 3.2 amps |
Ports |
1x Hand control port, 1x Auxiliary Port, 1x Auto guider port, 1 USB 2.0 port (on hand control) |
Motor Drive |
Low cog DC servo motors |
Slew Speeds |
9 slew speeds |
Tracking Rates |
Sidereal, Solar and Lunar |
Tracking Modes |
EQ North and EQ South |
Alignment Procedures |
AutoAlign, 2-Star Align, Quick Align, 1-Star Align, Last Alignment, Solar System Align |
Computerized Hand Control |
Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons, USB 2.0 port for PC connection |
Database |
40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects |
Mount Weight |
40 lbs |
Tripod Weight |
20 lbs |
Weight of Counterweight |
17 lbs |
Total Weight of Mount Kit |
77 lbs |
Product Status | New |
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Package width | 150 cm |
Package height | 70 cm |
Package depth | 130 cm |