Celestron C8-S, C5-S, C9.25-S instruction manual Astronomy Basics

Autoguide Rates	26
Azimuth Limits	26
East/West Filtering	27
Utility Features	27
Calibrate Goto	27
Home Position	27
Polar Align	27
Light Control	28
Factory Settings	28
Version	28
Get Alt-Az	28
Goto Alt-Az	28
Hibernate	28
Turn On/Off GPS	28
ASTRONOMY BASICS	30
The Celestial Coordinate System	30
Motion of the Stars	31
Finding the North Celestial Pole	33
Declination Drift Method of Polar Alignment	34
CELESTIAL OBSERVING	35
Observing the Moon	35
Lunar Observing Hints	35
Observing the Planets	35
Observing the Sun	35
Solar Observing Hints	36
Observing Deep Sky Objects	36
Seeing Conditions	36
Transparency	36
Sky Illumination	36
Seeing	36
ASTROPHOTOGRAPHY	38
Short Exposure Prime Focus Photography	38
Eyepiece Projection	39
Long Exposure Prime Focus Photography	40
Terrestrial Photography	42
Metering	42
Reducing Vibration	42
CCD Imaging	42
Auto Guiding	43
TELESCOPE MAINTENANCE	44
Care and Cleaning of the Optics	44
Collimation	44
OPTIONAL ACCESSORIES	46
APPENDIX A – TECHNICAL SPECIFICATIONS	49
APPENDIX B – GLOSSARY OF TERMS	50
APPENDIX C – LONGITUDES AND LATITUDES	53
APPENDIX D – RS-232 CONNECTION	58
APPENDIX E – TIME ZONE MAP	60
SKY MAPS	62
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