Celestron C11-SGT User Manual Page 46
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44 CGEM Specifications
Cgem iTem # 11097 11080 11098 11081 11099 11082
Model Name CGEM 800 CGEM 800 HD CGEM 925 CGEM 925 HD CGEM 1100 CGEM 1100 HD
Optical Design 8” Schmidt-Cassegrain EdgeHD Optics 9.25” Schmidt-Cassegrain EdgeHD Optics 11” Schmidt-Cassegrain EdgeHD Optics
Aperture 203.2 mm 203.2 mm 235 mm 235 mm 280 mm 280 mm
Focal Length / Focal Ratio 2032 mm / f10 2032 mm / f10 2350 mm / f10 2350 mm / f10 2800 mm / f10 2800 mm / f10
Finderscope 6x30 9x50 6x30 9x50 9x50 9x50
Mount Computerized Equatorial Computerized Equatorial Computerized Equatorial Computerized Equatorial Computerized Equatorial Computerized Equatorial
Optical Tube Aluminum Aluminum Aluminum Aluminum Aluminum Aluminum
Eyepiece 25 mm (81x) 40 mm (51x) 25 mm (94x) 23 mm (102x) 40 mm (70x) 23 mm (122x)
Star Diagonal 1.25” 1.25” 1.25” 2” 1.25” 2”
Tripod / Accessory Tray Adjustable, Stainless Steel Adjustable, Stainless Steel Adjustable, Stainless Steel Adjustable, Stainless Steel Adjustable, Stainless Steel Adjustable, Stainless Steel
Power Supply Car battery adapter Car battery adapter Car battery adapter Car battery adapter Car battery adapter Car battery adapter
NexRemote control software NexRemote control software NexRemote control software NexRemote control software NexRemote control software NexRemote control software
CD-ROM with RS232 cable with RS232 cable with RS232 cable with RS232 cable with RS232 cable with RS232 cable
Hand Control Ports RS-232 communication port RS-232 communication port RS-232 communication port RS-232 communication port RS-232 communication port RS-232 communication port
GPS Optional SkySync Accessory Optional SkySync Accessory Optional SkySync Accessory Optional SkySync Accessory Optional SkySync Accessory Optional SkySync Accessory
Low cog DC Servo motors Low cog DC Servo motors Low cog DC Servo motors Low cog DC Servo motors Low cog DC Servo motors Low cog DC Servo motors
Motor Type with encoders, both axes with encoders, both axes with encoders, both axes with encoders, both axes with encoders, both axes with encoders, both axes
Software Precision 24bit, 0.08 calculation 24bit, 0.08 calculation 24bit, 0.08 calculation 24bit, 0.08 calculation 24bit, 0.08 calculation 24bit, 0.08 calculation
Tracking Rates Sidereal, Solar and Lunar Sidereal, Solar and Lunar Sidereal, Solar and Lunar Sidereal, Solar and Lunar Sidereal, Solar and Lunar Sidereal, Solar and Lunar
Tracking Modes EQ North and EQ South EQ North and EQ South EQ North and EQ South EQ North and EQ South EQ North and EQ South EQ North and EQ South
Useful Magnification Highest / Lowest 480x / 29x 480x / 29x 555x / 34x 555x / 34x 661x / 40x 661x / 40x
Limiting Stellar Magnitude 14 14 14.4 14.4 14.7 14.7
Resolution: Rayleigh 0.69 arcsec 0.69 arcsec 0.59 arcsec 0.59 arcsec 0.5 arcsec 0.5 arcsec
Dawes Limit 0.57 arcsec 0.57 arcsec 0.49 arcsec 0.49 arcsec 0.41 arcsec 0.41 arcsec
Light Gathering Power 843x 843x 1127x 1127x 1600x 1600x
Field of View: standard eyepiece 0.62° 0.84° 0.53° 0.53° 0.71° 0.67°
Optical Coatings Starbright XLT Coatings Starbright XLT Coatings Starbright XLT Coatings Starbright XLT Coatings Starbright XLT Coatings Starbright XLT Coatings
Secondary Mirror Obstruction 2.7 in 2.7 in 3.35 in 3.35 in 3.75 in 3.75 in
Diameter, Area 33.8%, 11.4% 33.8%, 11.4% 36.2%, 13.1% 36.2%, 13.1%
34%,
11.6% 34%, 11.6%
Optical Tube Length 17 inches 17 inches 22 inches 22 inches 24 inches 24 inches
Computerized Hand Control * * * * * *
Database * * * * * *
Slew Speeds * * * * * *
Alignment Procedures * * * * * *
Gear * * * * * *
Internal Clock Yes Yes Yes Yes Yes Yes
Latitude Range 15-70º 15-70º 15-70º 15-70º 15-70º 15-70º
Telescope Weight 88 lbs 88 lbs 113 lbs 113 lbs 120 lbs 120 lbs
Specifications are subject to change without notice or obligation.
*Computerized Hand Control Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons
*Database 40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects.
*Slew Speeds Nine slew speeds, 5°/sec MAX
*Alignment Procedures 2-Star Align, Quick Align, 1-Star Align, Last Alignment, Solar System Align
*Gear Steel worm gear and 90 mm pitch diameter brass worm wheel
- ASTRONOMY 2010-2011 1
- Table of ConTenTs 3
- 2 History of Celestron 4
- asTronomy! 5
- 4 Celestron Life 6
- SkyScout FeatureS 8
- TelesCope Table of ConTenTs 9
- TelesCopes and how They work 10
- Celestron Technologies 11
- besT suiTs your needs 12
- * Includes Motor Drive 13
- opTiCal sysTem 14
- STABLE PLATFORM 15
- LcM SerieS FeatureS 16
- WITH ITS 17
- 16 NexStar SLT Series 18
- SINGLE FORK ARM DESIGN AND 19
- 18 NexStar SE Series 20
- NexStar SE Series 19 21
- 20 CPC GPS Series 22
- ERGONOMICALLY DESIGNED FOR 23
- ASTROPHOTOGRAPHY 24
- ON ONE 27
- TOMORROW 29
- TelesCopes 30
- OPTICAL DESIGN 31
- True asTrograph qualiTy 32
- CoaTings 32
- Compatible 33
- Specialty Telescopes 34
- Optical Tube Assemblies 35
- Cgem CompuTerized mounT 36
- Cg-5 CompuTerized mounT 36
- Cge pro CompuTerized mounT 36
- Accessories 38
- The mounT and Tripod 39
- CompuTerized TelesCope? 39
- Types of TelesCopes 39
- CatadIoptrIC telesCope 40
- Omni XLT Specifications 39 41
- NexStar SLT Specifications 42
- NexStar SE Specifications 41 43
- CPC GPS Specifications 44
- Advanced Specifications 43 45
- CGEM Specifications 46
- CGE Pro Specifications 45 47
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