Celestron 93507 Telescope User Manual


 
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Version ................................................................................................................................................................26
Get Alt-Az...........................................................................................................................................................26
Goto Alt-Az.........................................................................................................................................................26
TELESCOPE BASICS..................................................................................................................................................28
Image Orientation ...................................................................................................................................................28
Focusing..................................................................................................................................................................29
Calculating Magnification.......................................................................................................................................29
Determining Field of View ......................................................................................................................................29
General Observing Hints.........................................................................................................................................30
ASTRONOMY BASICS ...............................................................................................................................................31
The Celestial Coordinate System.............................................................................................................................31
Motion of the Stars ..................................................................................................................................................32
Polar Alignment (with optional Wedge)..................................................................................................................33
Wedge Align .......................................................................................................................................................33
Finding the North Celestial Pole.............................................................................................................................33
Declination Drift Method of Polar Alignment.....................................................................................................34
CELESTIAL OBSERVING .........................................................................................................................................36
Observing the Moon................................................................................................................................................36
Lunar Observing Hints ........................................................................................................................................36
Observing the Planets .............................................................................................................................................36
Planetary Observing Hints...................................................................................................................................36
Observing the Sun ...................................................................................................................................................37
Solar Observing Hints .........................................................................................................................................37
Observing Deep Sky Objects ...................................................................................................................................37
Seeing Conditions....................................................................................................................................................37
Transparency...........................................................................................................................................................37
Sky Illumination.......................................................................................................................................................37
Seeing......................................................................................................................................................................38
CELESTIAL PHOTOGRAPHY..................................................................................................................................39
Short Exposure Prime Focus Photography .............................................................................................................39
Eyepiece Projection.................................................................................................................................................40
Long Exposure Prime Focus Photography..............................................................................................................41
Periodic Error Correction (PEC)............................................................................................................................42
Using Periodic Error Correction..........................................................................................................................42
Terrestrial Photography..........................................................................................................................................43
Metering ..............................................................................................................................................................44
Reducing Vibration .............................................................................................................................................44
CCD Imaging ..........................................................................................................................................................44
Fastar F/2 Imaging..............................................................................................................................................46
F/6.3 with Reducer/Corrector..............................................................................................................................46
Auto Guiding.......................................................................................................................................................47
TELESCOPE MAINTENANCE..................................................................................................................................48
Care and Cleaning of the Optics.............................................................................................................................48
Collimation..............................................................................................................................................................48
OPTIONAL ACCESSORIES.....................................................................................................................................50
APPENDIX A - TECHNICAL SPECIFICATIONS ..................................................................................................53
APPENDIX B - GLOSSARY OF TERMS..................................................................................................................54
APPENDIX C – LONGITUDES AND LATITUDES.................................................................................................57
APPENDIX D – RS-232 CONNECTION....................................................................................................................62
Communication Protocol:....................................................................................................................................62