Celestron CGE1100 User Manual
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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