Manuals / Celestron / Lawn and Garden / Telescope

Celestron C100ED-R, C80ED-R manual Light Control

Models: C100ED-R C80ED-R

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Light Control	27
Factory Settings	27
Version	27
Get Alt-Az	27
Goto Alt-Az	27
Hibernate	27
Turn On/Off GPS	27
TELESCOPE BASICS	29
Image Orientation	29
Focusing	30
Aligning the Finderscope	30
Calculating Magnification	30
Determining Field of View	31
General Observing Hints	31
ASTRONOMY BASICS	32
The Celestial Coordinate System	32
Motion of the Stars	33
Finding the North Celestial Pole	35
Declination Drift Method of Polar Alignment	36
CELESTIAL OBSERVING	37
Observing the Moon	37
Lunar Observing Hints	37
Observing the Planets	37
Observing the Sun	37
Solar Observing Hints	38
Observing Deep Sky Objects	38
Seeing Conditions	38
Transparency	38
Sky Illumination	38
Seeing	38
ASTROPHOTOGRAPHY	40
Piggyback	40
Short Exposure Prime Focus Photography	41
Terrestrial Photography	42
Metering	42
Reducing Vibration	42
Auto Guiding	43
TELESCOPE MAINTENANCE	44
Care and Cleaning of the Optics	44
OPTIONAL ACCESSORIES	45
APPENDIX A – TECHNICAL SPECIFICATIONS	47
APPENDIX B – GLOSSARY OF TERMS	48
APPENDIX C – LONGITUDES AND LATITUDES	51
APPENDIX D – RS-232 CONNECTION	56
APPENDIX E – TIME ZONE MAP	58
SKY MAPS	60

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Celestron C100ED-R, C80ED-R manual Light Control

Contents

C80ED-R C100ED-R INSTRUCTION MANUALAdvanced Series Advanced Series GT INTRODUCTION Light Control Many other high performance features Fig 1-2- The Advanced GT Series Attaching the Equatorial Mount Setting up the TripodAttaching the Center Leg Brace Installing the Counterweight BarFor Non-GTModels Only Installing the CounterweightAttaching the Hand Control Holder Advanced GT Models OnlyAttaching the Telescope Tube to the Mount Installing the Finderscope The Optical TubeFigure Installing the Eyepieces Balancing the Tube in R.AFigure Figure Adjusting the MountBalancing the Telescope in DEC OF THE TELESCOPE TUBE COMPLETELYAdjusting the Mount in Azimuth Adjusting the Mount in AltitudePowering the Telescope Figure The Advanced GT Hand Control 1 7 2 8 3 9 4Double Stars Hand Control OperationNamed Stars Named ObjectsStartup Procedure Alignment ProceduresAuto Three-StarAlign Auto AlignQuick-Align Last AlignmentRe-Alignment Finding Planets Object CatalogSelecting an Object Slewing to an ObjectRate Button Tour ModeConstellation Tour Direction Buttons2º / sec Setup Proceduressidereal = .5º / secIdentify Precise GoTo Scope Setup Featuresexample, if you are observing from a mountainous location where the horizon is partially obscured, you can set your minimum altitude limit to read +20º. This will make sure that the hand control only displays objects that are higher in altitude than 20º Utility Features Helpful Hint LIST ADVANCED GTMENU ALIGNMENTwith the unaided eye Image OrientationFigure Actual image orientation as seenFocusing Aligning the FinderscopeCalculating Magnification General Observing Hints Determining Field of ViewFigure The Celestial Coordinate SystemMotion of the Stars Pointing at Polaris Latitude ScalesDefinition Finding the North Celestial PoleDeclination Drift Method of Polar Alignment Observing the Sun Observing the MoonLunar Observing Hints Observing the PlanetsTransparency Solar Observing HintsObserving Deep Sky Objects Seeing ConditionsSeeing conditions directly affect image quality. These drawings represent a point source i.e., star under bad seeing conditions left to excellent conditions right. Most often, seeing conditions produce images that lie some where between these two extremes Piggyback Short Exposure Prime Focus Photography Lunar Phase Terrestrial PhotographyMetering Reducing VibrationAuto Guiding Care and Cleaning of the Optics 40mm Page 21026 / Appendix A – Technical SpecificationsAdvanced Series 21021 /Appendix B - Glossary of Terms Page Page APPENDIX C LONGITUDES AND LATITUDES LONGITUDE LONGITUDE LONGITUDE INTERNATIONAL CANADACommands below available on version 2.2 or later Appendix D - RS-232ConnectionPC Command ASCII Commands below available on version 1.6 or laterReset The Position Of Azm Or Alt Additional RS232 CommandsAPPENDIX E – MAPS OF TIME ZONES Page Page Page Page Page Page Page CELESTRON TWO YEAR WARRANTY Celestron Copyright 2003 Celestron All rights reservedItem # 21021-INSTPrinted in China $10.00