Celestron NexStar 80GTL User Manual
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Observing the Sun .................................................................................................................................................24
Solar Observing Hints ...........................................................................................................................................25
Observing Deep Sky Objects.................................................................................................................................25
Terrestrial (Land) Viewing....................................................................................................................................25
Terrestrial (Land) Viewing Hints ..........................................................................................................................25
Seeing Conditions..................................................................................................................................................25
Transparency .........................................................................................................................................................25
Sky Illumination ....................................................................................................................................................26
Seeing....................................................................................................................................................................26
TELESCOPE MAINTENANCE....................................................................................................................................27
Care and Cleaning of the Optics....................................................................................................................................27
OPTIONAL ACCESSORIES .......................................................................................................................................28
APPENDIX A - TECHNICAL SPECIFICATIONS ...................................................................................................30
APPENDIX B – GLOSSARY OF TERMS ...................................................................................................................31
APPENDIX C – RS 232 CONNECTION ......................................................................................................................34
Communication Protocol:......................................................................................................................................34
APPENDIX D – TIME ZONE MAPS ...........................................................................................................................35
SKY MAPS ......................................................................................................................................................................37