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Celestron C100ED-R, C80ED-R manual Copyright 2003 Celestron All rights reserved

Models: C100ED-R C80ED-R

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Celestron

2835 Columbia Street Torrance, CA 90503 U.S.A. Tel. (310) 328-9560

Fax. (310) 212-5835

Web site at http//www.celestron.com

Copyright 2003 Celestron

All rights reserved.

(Products or instructions may change without notice or obligation.)

Item # 21021-INST Printed in China $10.00 07-05

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Celestron C100ED-R, C80ED-R Copyright 2003 Celestron All rights reserved, Item # 21021-INSTPrinted in China $10.00

Contents

INSTRUCTION MANUAL C80ED-R C100ED-RAdvanced 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 The Optical Tube Installing the FinderscopeFigure Balancing the Tube in R.A Installing the EyepiecesFigure 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 AlignLast Alignment Quick-AlignRe-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 seenAligning the Finderscope FocusingCalculating 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 Copyright 2003 Celestron All rights reserved CelestronItem # 21021-INSTPrinted in China $10.00