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Celestron 31058 User Manual

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T A B L E O F C O N T E N T S

INTRODUCTION .................................................................................................................................................. 1

How to Use This Manual ................................................................................................................................ 2
A Word of Caution ......................................................................................................................................... 2
The Newtonian Optical System .................................................................................................................... 3

ASSEMBLING YOUR G-8N REFLECTOR ........................................................................................... 4

Unpacking Your G-8N .................................................................................................................................. 4
Setting Up the Tripod ..................................................................................................................................... 6
Adjusting the Tripod Height .......................................................................................................................... 6
Attaching the Accessory Tray ....................................................................................................................... 7
Attaching the Equatorial Mount .................................................................................................................... 8

Attaching the R.A. Slow Motion Knob .......................................................................................... 9
Attaching the Declination Slow Motion Knob ............................................................................ 10
Installing the Counterweight Bar & Counterweights .................................................................... 11

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

Balancing the Telescope in R.A. ................................................................................................... 13
Balancing the Telescope in DEC ................................................................................................... 14

Adjusting the Mount in Altitude .................................................................................................................. 15
Adjusting the Mount in Azimuth ................................................................................................................. 15
Disassembling and Transporting Your G-8N ............................................................................................. 16
Storing Your G-8N ...................................................................................................................................... 16
Installing the Finderscope ............................................................................................................................ 17
Installing the Eyepiece ................................................................................................................................. 18
Technical Specifications .............................................................................................................................. 19

TELESCOPE BASICS ...................................................................................................................................2 0

Image Orientation ........................................................................................................................................ 20
Focusing ........................................................................................................................................................ 21
Aligning the Finder ...................................................................................................................................... 22
Your First Look ........................................................................................................................................... 23

Daytime Observing ........................................................................................................................ 23
Nighttime Observing ..................................................................................................................... 24

Calculating Magnification (Power) ............................................................................................................. 25
Determining the Field of View .................................................................................................................... 25

ASTRONOMY BASICS ................................................................................................................................ 2 6

The Celestial Coordinate System ................................................................................................................ 26
Motion of the Stars ....................................................................................................................................... 27
Polar Alignment ........................................................................................................................................... 28
Finding the Pole ........................................................................................................................................... 29
Latitude Scales ............................................................................................................................................. 30
Pointing at Polaris ........................................................................................................................................ 31
Declination Drift .......................................................................................................................................... 32
G-8N Polar Axis Finder .............................................................................................................................. 33
Aligning the R.A. Setting Circle .................................................................................................................. 33

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