Celestron 11055 - Page 4

iv • Table of Contents
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▲ USING THE DRIVE .............................................................................................................................37
Powering Up the Drive ......................................................................................................................37
Guide Speed ....................................................................................................................................38
Tracking Rate Selection....................................................................................................................38
BC -Backlash Correction ..................................................................................................................39
Periodic Error Correction ..................................................................................................................39
HC/CCD ...........................................................................................................................................40
12 V DC ...........................................................................................................................................40
Northern/Southern Hemisphere Operation.........................................................................................41
Using the Hand Controller .................................................................................................................41
R.A./DEC Reverse ............................................................................................................................42
Autoguiding ......................................................................................................................................42
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▲ CELESTIAL OBSERVING ...................................................................................................................43
Observing the Moon ..........................................................................................................................43
Observing the Planets ......................................................................................................................43
Observing the Sun ............................................................................................................................44
Observing Deep-Sky Objects............................................................................................................45
Using the Setting Circles ...........................................................................................................45
Star Hopping ..............................................................................................................................46
Viewing Conditions ...........................................................................................................................48
Transparency .............................................................................................................................48
Sky Illumination .........................................................................................................................48
Seeing .......................................................................................................................................48
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▲ CELESTIAL PHOTOGRAPHY .............................................................................................................50
Short Exposure Prime Focus ...........................................................................................................51
Piggyback ........................................................................................................................................53
Eyepiece Projection .........................................................................................................................55
Long Exposure Prime Focus ............................................................................................................57
CCD Imaging ....................................................................................................................................59
Description of F-Numbers............................................................................................................60
Fastar Configuration ...................................................................................................................60
Imaging at f/2.1 ..........................................................................................................................61
Imaging at f/7 .............................................................................................................................61
Imaging at f/11 ...........................................................................................................................61
Imaging at f/22 ...........................................................................................................................62
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▲ TELESCOPE MAINTENANCE .............................................................................................................63
Care and Cleaning of the Optics .......................................................................................................63
Collimation .......................................................................................................................................63
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▲ OPTIONAL ACCESSORIES ................................................................................................................66
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▲ THE MESSIER CATALOG ..................................................................................................................70
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▲ LIST OF BRIGHT STARS ...................................................................................................................73
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▲ FOR FURTHER READING ...................................................................................................................74