www.testfreaks.com

Reviews, reviews, reviews...

Celestron-cgem-800-hd.4651687

Celestron CGEM 800 HD

Optical Design : EdgeHD Optics Aperture : 203.2 mm (8 in) Focal Read more

Best Price at Amazon

Specifications

Feature
Value
Comment
Optical Design :
EdgeHD Optics
Aperture :
203.2 mm (8 in)
Focal Length :
2032 mm (80 in)
Focal Ratio :
10
Finderscope :
9x50
Mount :
CGEM Computerized Equatorial
Optical Tube :
Aluminum
Optical Coatings :
Starbright XLT Coating
Eyepiece 1 :
40 mm (1.57 in)
Magnification 1 :
51 x
Star Diagonal :
1.25
Tripod :
Adjustable, Stainless Steel
CD ROM :
NexRemote control software with RS232 cable
Power Supply :
Car battery adapter
Highest Useful Magnification :
480 x
Lowest Useful Magnification :
29 x
Limiting Stellar Magnitude :
14
Eyepiece 1 Field of View :
0.84 °
Light Gathering Power :
843 x
Secondary Mirror Obstruction :
2.7 in (68.58 mm)
Secondary Mirror Obstruction by Area :
11.4 %
Secondary Mirror Obstruction by Diameter :
33.8 %
Resolution (Rayleigh) :
0.69 arcsec
Resolution (Dawes) :
0.57 arcsec
Motor Drive :
Low cog DC Servo motors with encoders, both axes
Computer Hand Control :
Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons
Slew Speeds :
Nine slew speeds: 5 °/sec, 2 °/sec, 1 °/sec, 64x, 16x, 8x, 4x, 1x, .5x
Tracking Rates :
Sidereal, Solar and Lunar
Tracking Modes :
EQ North and EQ South
Alignment Procedures :
2-Star Align, Quick Align, 1-Star Align, Last Alignment, Solar System Align
Database :
40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects
Optical Tube Length :
17 in (431.8 mm)
Gear :
Steel worm gear and 90 mm pitch diameter brass worm wheel
Counterweights :
1 x 17 lbs
Telescope Weight :
88 lbs (39.92 kg)
Software Precision :
24 bit, 0.08 calculation
Power Requirements :
12 VDC 3.2 Amps
GPS :
Optional SkySync GPS Accessory
Release Date
First seen
22 July 2009