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Celestron-cgem-1100-hd.4651689
7.4 out of 10

Celestron CGEM 1100 HD

Optical Design : EdgeHD Optics Focal Length : 2800 mm (110.24 in Read more

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Specifications

Feature
Value
Comment
Optical Design :
EdgeHD Optics
Focal Length :
2800 mm (110.24 in)
Aperture :
280 mm (11.02 in)
Focal Ratio :
10
Finderscope :
9x50
Mount :
CGEM Computerized Equatorial
Optical Tube :
Aluminum
Optical Coatings :
Starbright XLT Coatings
Eyepiece 1 :
23 mm (0.91 in)
Magnification 1 :
122 x
Star Diagonal :
2"
Tripod :
Adjustable, Stainless Steel
CD ROM :
NexRemote control software with RS232 cable
Power Supply :
Car battery adapter
Highest Useful Magnification :
661 x
Lowest Useful Magnification :
40 x
Limiting Stellar Magnitude :
14.7
Resolution (Rayleigh) :
0.5 arcsec
Resolution (Dawes) :
0.41 arcsec
Light Gathering Power :
1600 x
Eyepiece 1 Field of View :
0.67 °
Secondary Mirror Obstruction :
3.75 in (95.25 mm)
Secondary Mirror Obstruction by Area :
11.6 %
Secondary Mirror Obstruction by Diameter :
34 %
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 :
24 in (609.6 mm)
Gear :
Steel worm gear and 90 mm pitch diameter brass worm wheel
GPS :
Optional SkySync GPS Accessory
Counterweights :
2 x 17 lbs
Telescope Weight :
120 lbs (54.43 kg)
Software Precision :
24 bit, 0.08 calculation
Power Requirements :
12 VDC 3.2 Amps
Release Date
First seen
22 July 2009