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Celestron CGE1400, CGE925, CGE1100, CGE800 manual Astronomy Basics

Models: CGE1400 CGE800 CGE1100 CGE925

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Goto Alt-Az	28
Hibernate	28
Turn On/Off RTC	28
Turn On/Off GPS	29
Image Orientation	31
Focusing	32
Calculating Magnification	32
Determining Field of View	32
General Observing Hints	33
ASTRONOMY BASICS	34
The Celestial Coordinate System	34
Motion of the Stars	35
Finding the North Celestial Pole	37
Declination Drift Method of Polar Alignment	38
CELESTIAL OBSERVING	39
Observing the Moon	39
Lunar Observing Hints	39
Observing the Planets	39
Observing the Sun	40
Solar Observing Hints	40
Observing Deep Sky Objects	40
Seeing Conditions	40
Transparency	40
Sky Illumination	40
Seeing	41
ASTROPHOTOGRAPHY	42
Short Exposure Prime Focus Photography	42
Eyepiece Projection	43
Long Exposure Prime Focus Photography	44
Periodic Error Correction (PEC)	45
Using Periodic Error Correction	46
Terrestrial Photography	47
Metering	47
Reducing Vibration	47
CCD Imaging	47
Fastar F/2 Imaging	49
F/6.3 with Reducer/Corrector	50
Medium size to small galaxies –	50
Planetary or Lunar--	50
Auto Guiding	51
TELESCOPE MAINTENANCE	52
Care and Cleaning of the Optics	52
Collimation	52
OPTIONAL ACCESSORIES	54
TECHNICAL SPECIFICATIONS	57
APPENDIX A – LONGITUDES AND LATITUDES	59
APPENDIX B – RS-232 CONNECTION	64
APPENDIX C – TIME ZONE MAP	66
SKY MAPS	68

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Celestron CGE1400, CGE925, CGE1100, CGE800 manual Astronomy Basics

Contents

INSTRUCTION MANUAL CGE800 CGE925 CGE1100 CGE1400INTRODUCTION Periodic Error CorrectionASSEMBLY User Defined ObjectsASTRONOMY BASICS Some of the many standard features of the CGE include On/Off Switch CounterweightsLatitude Adjustment Scale Counterweight BarCGE 800 #11058 Setting up the TripodPower Supply CounterweightTripod Leg Attaching the Center Leg BraceAttaching the Electronics Pier Electronincs PierCounterweight Locking Screw Safety Screw and Washer Installing the Counterweight BarInstalling the Counterweight Dec Axis Counterweight BarAttaching 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 Variable Stars Named StarsNamed Objects Double StarsAlignment Procedures Startup ProcedureCalibrating the CGE Mount Auto One-Star Align stars using the up arrow button and the right arrow buttonApproaching the star from this direction when looking through the Auto Two-Star AlignQuick-Align Last AlignmentCGE Re-Alignment Finding Planets Object CatalogSelecting an Object Slewing to an ObjectRate Button Tour ModeConstellation Tour Direction ButtonsSetup 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 UTILITIES CALIBRATE MOUNT Utility FeaturesMOVE TO SWITCH LIGHT CONTROL FACTORY SETTINGHelpful Hint Page MENU command functionsCGE Ready CGE Menu TreeImage 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 Planetary Observing Hints Observing the MoonLunar Observing Hints Observing the PlanetsSeeing Conditions Observing the SunSolar Observing Hints Observing Deep Sky ObjectsSeeing Short Exposure Prime Focus Photography Quarter Eyepiece ProjectionLunar Phase CrescentMercury Long Exposure Prime Focus PhotographyPlanet MoonPeriodic Error Correction PEC Using Periodic Error Correction CCD Imaging Terrestrial PhotographyMetering Reducing VibrationSecondary Mirror Secondary Mirror Retaining Ring Corrector Plate With Lens AccessoryTelescope StandardFigure 7-5 M27 -- The Dumbbell F/6.3 with Reducer/CorrectorMedium size to small galaxies Planetary or LunarAuto 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 Counter Weight Technical SpecificationsEQ Mount Weight Counter Weight barSlew one axis Technical SpecificationsSlew Speeds Idle CurrentCONNECTICUT APPENDIX A LONGITUDES AND LATITUDESLONGITUDE LONGITUDE LONGITUDE INTERNATIONAL CANADACommands below Appendix B - RS-232 ConnectionCommunication Protocol PC Command ASCIIAdditional 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 Item # 11063-INST $10.00 Celestron 2835 Columbia Street Torrance, CA Tel. 310 Fax. 310Copyright 2003 Celestron All rights reserved Products or instructions may change without notice or obligation