Celestron OMNI XLT 102 manual Astrophotography

Transparency	33
Sky Illumination	33
Seeing	34
Using the Lens Cap Aperture Stop with Refractor Telescopes	34
ASTROPHOTOGRAPHY	35
Piggyback Photography	35
Short Exposure Prime Focus Photography for Refractors & Newtonians	36
Short Exposure Prime Focus Photography for Schmidt-Cassegrains	36
Eyepiece Projection for a Schmidt-Cassegrain	37
Long Exposure Prime Focus Photography	38
Planetary and Lunar Photography with Special Imagers	39
CCD Imaging for Deep Sky Objects	40
Terrestrial Photography	40
Metering	40
Reducing Vibration	40
TELESCOPE MAINTENANCE	41
Care and Cleaning of the Optics	41
Collimation of Refractors	41
Collimation of a Schmidt-Cassegrain	42
Collimation of a Newtonian	44
OPTIONAL ACCESSORIES	48
APPENDIX A - TECHNICAL SPECIFICATIONS	51
APPENDIX B - GLOSSARY OF TERMS	52
SKY MAPS	55
CELESTRON TWO YEAR WARRANTY	61

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