Celestron Ultima 8 Instruction Manual page 5

Celestron ultima 8: instruction manual
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CHAPTER 9 - PHOTOGRAPHY .................................................................................................................................. 77
.......................................................................................................................................................... 80
Effective Focal Length ..................................................................................................................................................... 81
Effective Magnification .................................................................................................................................................... 81
Effective f# or f-ratio........................................................................................................................................................ 82
CCD IMAGING................................................................................................................................................................... 84
Description of F-numbers ................................................................................................................................................ 85
Imaging at f/1.95.............................................................................................................................................................. 86
Imaging at f/6.3 (Medium size to small galaxies) ............................................................................................................ 86
Imaging at f/10 (Lunar or small planetary nebulae)........................................................................................................ 87
Imaging at f/20 (Planetary or lunar) ............................................................................................................................... 87
CHAPTER 10 - TELESCOPE MAINTENANCE......................................................................................................... 90
....................................................................................................................................................................... 90
OPTIONAL ACCESSORIES ........................................................................................................................................... 92
APPENDIX A - DATA BASE STAR INFORMATION ............................................................................................... 96
......................................................................................................................................................... 96
APPENDIX B - ULTIMA 2000 COMMUNICATION PROTOCOL ......................................................................... 99
APPENDIX C - TECHNICAL SPECIFICATIONS ................................................................................................... 102
APPENDIX D - CCD AUTOGUIDE PIN OUT .......................................................................................................... 105
APPENDIX E - OPERATION TIPS ............................................................................................................................ 106
Setting the backlash compensations for an auto guider................................................................................................. 106
Viewing near the zenith in Alt-Az................................................................................................................................... 106
The effects of a star diagonal on pointing accuracy ...................................................................................................... 106
Viewing objects below the horizon................................................................................................................................. 107
Using Cord Wrap ........................................................................................................................................................... 107
Slewing Autostop............................................................................................................................................................ 107
GLOSSARY...................................................................................................................................................................... 108
THE SKY MAPS.............................................................................................................................................................. 112
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....................................................................................................................................... 98
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