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Celestron 21035 User Manual

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Table of Contents


INTRODUCTION .......................................................................................................................... 3
ASSEMBLY ................................................................................................................................... 5

Setting up the Tripod .................................................................................................................. 5
Attaching the Telescope Optical Tube to the Tripod.................................................................. 6
Moving the Travel Scope Manually ........................................................................................... 6
Installing the Diagonal & Eyepiece ............................................................................................ 7
Installing the Finderscope ........................................................................................................... 7
Aligning the Finderscope............................................................................................................ 7

TELESCOPE BASICS ................................................................................................................... 8

Focusing...................................................................................................................................... 8
Calculating Magnification .......................................................................................................... 8
Determining Field of View ......................................................................................................... 9
General Observing Hints............................................................................................................. 9

ASTRONOMY BASICS .............................................................................................................. 10

The Celestial Coordinate System.............................................................................................. 10
Motion of the Stars.................................................................................................................... 11

CELESTIAL OBSERVING ......................................................................................................... 12

Observing the Moon ................................................................................................................. 12
Observing the Planets ............................................................................................................... 12
Observing the Sun..................................................................................................................... 12
Observing Deep-Sky Objects.................................................................................................... 13
Seeing Conditions ..................................................................................................................... 15

TELESCOPE MAINTENANCE .................................................................................................. 16

Care and Cleaning of the Optics ............................................................................................... 16

TECHNICAL SPECIFICATIONS ……………………………………………………………...17