Celestron Omni XLT 102 Bedienungsanleitung

Celestron Teleskop Omni XLT 102

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ENGLISH

INTRODUCTION .......................................................................................................................................................... 4

Warning...................................................................................................................................................... 4

ASSEMBLY .................................................................................................................................................................... 8

Setting up the Tripod .................................................................................................................................. 8

Attaching the Equatorial Mount ................................................................................................................. 9

Attaching the Center Leg Brace ............................................................................................................... 10

Installing the Counterweight Bar.............................................................................................................. 10

Installing the Counterweights................................................................................................................... 11

Attaching the Slow Motion Control Knobs (Cables)................................................................................ 11

Attaching the Telescope Tube to the Mount............................................................................................. 12

Installing the Finderscope......................................................................................................................... 13

Installing the Visual Back......................................................................................................................... 13

Installing the Star Diagonal ...................................................................................................................... 14

Installing the Eyepieces............................................................................................................................ 14

Moving the Telescope Manually .............................................................................................................. 15

Balancing the Mount in R.A..................................................................................................................... 15

Balancing the Mount in DEC ................................................................................................................... 16

Adjusting the Mount................................................................................................................................. 16

Adjusting the Mount in Altitude............................................................................................................... 17

Adjusting the Mount in Azimuth.............................................................................................................. 17

TELESCOPE BASICS ................................................................................................................................................. 18

Image Orientation..................................................................................................................................... 20

Focusing ................................................................................................................................................... 20

Aligning the Finderscope ......................................................................................................................... 21

Calculating Magnification ........................................................................................................................ 21

Determining Field of View....................................................................................................................... 22

General Observing Hints .......................................................................................................................... 22

ASTRONOMY BASICS............................................................................................................................................... 23

The Celestial Coordinate System ............................................................................................................. 23

Motion of the Stars ................................................................................................................................... 24

Latitude Scale........................................................................................................................................... 25

Pointing at Polaris .................................................................................................................................... 25

Finding the North Celestial Pole .............................................................................................................. 26

Polar Alignment in the Southern Hemisphere .......................................................................................... 27

Pointing at Sigma Octantis ....................................................................................................................... 28

Finding the South Celestial Pole (SCP).................................................................................................... 28

Declination Drift Method of Polar Alignment.......................................................................................... 29

Aligning the R.A. Setting Circle .............................................................................................................. 30

Using the R.A. Vernier Scale ................................................................................................................... 31

CELESTIAL OBSERVING......................................................................................................................................... 32

Observing the Moon................................................................................................................................. 32

Lunar Observing Hints ............................................................................................................................. 32

Observing the Planets............................................................................................................................... 32

Observing the Sun .................................................................................................................................... 33

Solar Observing Hints .............................................................................................................................. 33

Observing Deep Sky Objects.................................................................................................................... 33

Seeing Conditions..................................................................................................................................... 33

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