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3
Home Position.....................................................................................................................................................................................29
Light Control.......................................................................................................................................................................................29
Factory Settings...................................................................................................................................................................................29
Version................................................................................................................................................................................................29
Get Axis Position.................................................................................................................................................................................29
Goto Axis Position ..............................................................................................................................................................................29
Hibernate.............................................................................................................................................................................................29
Sun Menu ............................................................................................................................................................................................29
Scrolling Menu.................................................................................................................................................................................... 30
Set Mount Position..............................................................................................................................................................................30
Set Mount Position....................................................................................................................................................................................... 30
Turn On/Off GPS ................................................................................................................................................................................30
Turn On/Off RTC................................................................................................................................................................................30
Periodic Error Correction ....................................................................................................................................................................30
TELESCOPE BASICS.............................................................................................................................................................................................................. 32
Image Orientation......................................................................................................................................................................................... 32
Focusing....................................................................................................................................................................................................... 33
Calculating Magnification............................................................................................................................................................................ 33
Determining Field of View........................................................................................................................................................................... 33
General Observing Hints.............................................................................................................................................................................. 34
ASTRONOMY BASICS........................................................................................................................................................................................................... 35
The Celestial Coordinate System.................................................................................................................................................................. 35
Motion of the Stars....................................................................................................................................................................................... 36
Polar Aligning the Mount............................................................................................................................................................................. 37
Polar Align ..........................................................................................................................................................................................37
Finding the North Celestial Pole................................................................................................................................................................... 39
CELESTIAL OBSERVING .....................................................................................................................................................................................................40
Observing the Moon..................................................................................................................................................................................... 40
Lunar Observing Hints ................................................................................................................................................................................. 40
Observing the Planets................................................................................................................................................................................... 40
Observing the Sun ........................................................................................................................................................................................ 40
Solar Observing Hints .................................................................................................................................................................................. 41
Observing Deep Sky Objects........................................................................................................................................................................ 41
Seeing Conditions......................................................................................................................................................................................... 41
Transparency................................................................................................................................................................................................ 41
Sky Illumination........................................................................................................................................................................................... 41
Seeing........................................................................................................................................................................................................... 41
ASTROPHOTOGRAPHY........................................................................................................................................................................................................43
Short Exposure Prime Focus Photography................................................................................................................................................... 43
Eyepiece Projection...................................................................................................................................................................................... 44
Long Exposure Prime Focus Photography ................................................................................................................................................... 46
Periodic Error Correction (PEC) .................................................................................................................................................................. 47
Using Periodic Error Correction................................................................................................................................................................... 47
Terrestrial Photography................................................................................................................................................................................ 48
Metering....................................................................................................................................................................................................... 48
Reducing Vibration ...................................................................................................................................................................................... 48
CCD Imaging ............................................................................................................................................................................................... 49
Auto Guiding................................................................................................................................................................................................ 49
TELESCOPE MAINTENANCE..............................................................................................................................................................................................50
Care and Cleaning of the Optics................................................................................................................................................................... 50
Collimation................................................................................................................................................................................................... 50
OPTIONAL ACCESSORIES.................................................................................................................................................................................................53
APPENDIX A – TECHNICAL SPECIFICATIONS............................................................................................................................................................ 56
APPENDIX B – GLOSSARY OF TERMS............................................................................................................................................................................57
APPENDIX C – RS-232 CONNECTION................................................................................................................................................................................60
APPENDIX D – TIME ZONE MAP........................................................................................................................................................................................ 62
SKY MAPS ................................................................................................................................................................................................................................64
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