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Celestron CGE1100 Technical Specifications, Dawes Limit, by Area, by Diameter, EQ Mount Weight

Models: CGE1400 CGE800 CGE1100 CGE925

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Technical Specifications

CGE	11058	11059	11062	11063
	CGE 800	CGE 925	CGE 1100	CGE 1400

Specifications:

Optical Design	8" Schmidt-Cassegrain	9.25" Schmidt-Cassegrain	11" Schmidt-Cassegrain	14" Schmidt-Cassegrain
Focal Length	2032mm F/10	2350mm F/10	2800mm F/10	3910mm F/11
Finderscope	6x30	6x30	9x50	9x50
Mount	Computerized Equatorial Mount	Computerized Equatorial Mount	Computerized Equatorial Mount	Computerized Equatorial Mount
Optical Tube	Carbon Fiber	Aluminum	Carbon Fiber	Aluminum
Fastar Compatible	Yes	No	Yes	Yes
Eyepiece	25mm Ploss l- 1.25" (81x)	25mm Plossl - 1.25" (94x)	40mm Plossl - 1.25" (70x)	40mm 2" (98x)
Star Diagonal	1.25"	1.25"	1.25"	2" with 1.25" adapter
Tripod	Adjustable, Carbon Steel	Adjustable, Carbon Steel	Adjustable, Carbon Steel	Adjustable, Carbon Steel
Car Battery Adapter	Included	Included	Included	Included

Technical Specs

Highest Useful Magnication	480x	555x	660x	840x
Lowest Useful Magnification	29x	34x	40x	51x
Limiting Stellar Magnitude	14	14.4	14.7	15.3
Resolution: Rayleigh	.68 arc seconds	.59 arc seconds	.50 arc seconds	.39 arc seconds
Dawes Limit	.57 arc seconds	.49 arc seconds	.42 arc seconds	.33 arc seconds
Photographic Resolution	200 line/mm	200 line/mm	200 line/mm	165 line/mm
Light Gathering Power	843x unaided eye	1127x unaided eye	1593x unaided eye	2581x unaided eye
Field of View :standard eyepiece	.62º	.53º	.71º	.51º
Linear FOV (@1000 yds)	32 ft.	28 ft.	38 ft.	27 ft.
Optical Coatings	Starbright Coating	Starbright Coating	Starbright Coating	Starbright Coating
Secondary Mirror Obstruction	2.7"	3.35"	3.75"	4.5"
by Area	11%	13%	12%	10%
by Diameter	34%	36%	34%	32%
Optical tube length	17 inches	22 inches	24 inches	31 inches
Optical Tube Weight	12.5 lb	20 lbs	27.5 lbs	45 lbs
Tripod and Pier	41.5 lb	41.5 lb	41.5 lb	41.5 lb
EQ Mount Weight	42 lb	42 lb	42 lb	42 lb
Counter Weight bar	5 lb	5 lb	5 lb	5 lb
Counter Weight	1 x 11 lb	1 x 25 lb	1 x 25 lb	2 x 25 lb

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Celestron CGE1100, CGE925 Technical Specifications, Dawes Limit, by Area, by Diameter, EQ Mount Weight, Counter Weight bar

Contents

INSTRUCTION MANUAL CGE800 CGE925 CGE1100 CGE1400ASSEMBLY Periodic Error CorrectionUser Defined Objects INTRODUCTIONASTRONOMY BASICS Some of the many standard features of the CGE include Latitude Adjustment Scale CounterweightsCounterweight Bar On/Off SwitchPower Supply Setting up the TripodCounterweight CGE 800 #11058Attaching the Electronics Pier Attaching the Center Leg BraceElectronincs Pier Tripod LegInstalling the Counterweight Installing the Counterweight BarDec Axis Counterweight Bar Counterweight Locking Screw Safety Screw and WasherAttaching the Optical Tube to the Mount Attaching the Visual BackDovetail Slide Bar Dovetail Locking Knobs Mounting Platform Installing the Eyepiece Installing the Star DiagonalInstalling the Finderscope Moving the Telescope Manually Adjusting the MountBalancing The Mount in R.A Balancing The Mount in DECGO OF THE TELESCOPE TUBE COMPLETELY Powering the Telescope Attaching the Motor CablesTransporting the CGE 7. Collapse the tripod legs inward, towards each other 6. Remove the center leg brace from the tripodThe CGE Hand Control Named Objects Named StarsDouble Stars Variable StarsAlignment Procedures Startup ProcedureCalibrating the CGE Mount Approaching the star from this direction when looking through the stars using the up arrow button and the right arrow buttonAuto Two-Star Align Auto One-Star AlignQuick-Align Last AlignmentCGE Re-Alignment Selecting an Object Object CatalogSlewing to an Object Finding PlanetsConstellation Tour Tour ModeDirection Buttons Rate ButtonSetup Procedures 1 = 2 = 1x sidereal 3 = 4 = 5 =6 = 7 = .5º / sec 8 = 2º / sec 9 = 4º / sec Helpful Hint IdentifyPrecise GoTo Scope Setup FeaturesObserving Tip Helpful Hint MOVE TO SWITCH Utility FeaturesLIGHT CONTROL FACTORY SETTING UTILITIES CALIBRATE MOUNTHelpful Hint Page CGE Ready command functionsCGE Menu Tree MENUImage Orientation Actual image orientation as seen with the unaided eyeReversed from left to right, as viewed with a Star Diagonal Focusing Calculating MagnificationDetermining Field of View General Observing Hints The celestial sphere seen from the outside showing R.A. and DEC The Celestial Coordinate SystemMotion of the Stars Pointing at Polaris Latitude Scalesthe south celestial pole Finding the North Celestial PoleDeclination Drift Method of Polar Alignment Lunar Observing Hints Observing the MoonObserving the Planets Planetary Observing HintsSolar Observing Hints Observing the SunObserving Deep Sky Objects Seeing ConditionsSeeing Short Exposure Prime Focus Photography Lunar Phase Eyepiece ProjectionCrescent QuarterPlanet Long Exposure Prime Focus PhotographyMoon MercuryPeriodic Error Correction PEC Using Periodic Error Correction Metering Terrestrial PhotographyReducing Vibration CCD ImagingSecondary Mirror Secondary Mirror Retaining Ring Corrector Plate Telescope Lens AccessoryStandard WithMedium size to small galaxies F/6.3 with Reducer/CorrectorPlanetary or Lunar Figure 7-5 M27 -- The DumbbellAuto Guiding Collimation Care and Cleaning of the OpticsTo make collimation a simple procedure, follow these easy steps 40mm 11 at f/10 and 163 power with the CGE exposure lunar and filtered solar photography EQ Mount Weight Technical SpecificationsCounter Weight bar Counter WeightSlew Speeds Technical SpecificationsIdle Current Slew one axisCONNECTICUT APPENDIX A LONGITUDES AND LATITUDESLONGITUDE LONGITUDE LONGITUDE INTERNATIONAL CANADACommunication Protocol Appendix B - RS-232 ConnectionPC Command ASCII Commands belowAdditional RS232 Commands Reset The Position Of Azm Or AltSend Any Track Rate Through RS232 To The Hand Control APPENDIX C - MAPS OF TIME ZONES Page Page Page Page Page Page Page CELESTRON TWO YEAR WARRANTY Copyright 2003 Celestron All rights reserved Celestron 2835 Columbia Street Torrance, CA Tel. 310 Fax. 310Products or instructions may change without notice or obligation Item # 11063-INST $10.00