Celestron CGEM 1100 - Manual (Page 56)

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Appendix A – Technical Specifications
CGEM Series 11097 11098 11099
CGEM 800 CGEM 925 CGEM 1100
Specifications:
Optical Design
203mm (8") Schmidt-
Cassegrain
235mm (9.25") Schmidt-
Cassegrain
280mm (11") Schmidt-
Cassegrain
Focal Length 2032mm F/10 2350mm F/10 2800mm F/10
Finderscope 6x30 6x30 9x50
Mount
CGEM Computerized
Equatorial
CGEM Computerized
Equatorial
CGEM Computerized
Equatorial
Eyepiece 25mm Plossl (81x) 25mm Plossl (94x) 40mm Plossl (70x)
Star Diagonal 1.25" 1.25" 1.25"
Accessory tray Yes Yes Yes
Tripod 2" Stainless Steel 2" Stainless Steel 2" Stainless Steel
Technical Specs
Highest Useful Magnication 480x 555x 660x
Lowest Useful Magnification 29x 34x 40x
Limiting Stellar Magnitude 14 14.4 14.7
Resolution: Rayleigh .68 arc seconds .59 arc seconds .50 arc seconds
Dawes Limit .57 arc seconds .49 arc seconds .42 arc seconds
Light Gathering Power 843x unaided eye 1127x unaided eye 1593x unaided eye
Field of View: standard eyepiece .64º .55º .61º
Linear FOV (@1000 yds) 33.6 ft. 29 ft. 32 ft.
Optical Coatings - Standard Starbright XLT Coating Starbright XLT Coating Starbright XLT Coating
Secondary Mirror Obstruction 2.7" 3.35" 3.75"
by Area 11% 13% 12%
by Diameter 34% 36% 34%
Optical tube length 17 inches 22 inches 24 inches
Telescope Weight 88 lbs 113 lbs 120 lbs
CGEM Mount
Additional Specifications
Hand Control Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons
Motor: Type DC Servo motors with encoders, both axes
Max Slew Speed 5º/second
Software Precision 24bit, 0.08 arcsec calculation
Hand Control Ports RS-232 communication port on hand control
Motor Ports Aux Port, Autoguide Ports
Tracking Rates Sidereal, Solar and Lunar
Tracking Modes EQ North & EQ South
Alignment Procedures 2-Star Align, 1-Star Align, Solar System Align, Quick Align, Last Align
Database
40,000+ objects, 400 user defined programmable objects.
Enhanced information on over 200 objects
Complete Revised NGC Catalog 7,840
Complete Messier Catalog 110
Complete IC Catalog 5,386
Complete Caldwell 109
Abell Galaxies 2,712
Solar System objects 9
Famous Asterisms 20
Selected CCD Imaging Objects 25
Selected SAO Stars 29,500
Total Object Database 45,492