Celestron AstroMaster 90EQ 21064 Manuals

Manuals and User Guides for Celestron AstroMaster 90EQ 21064. We have 1 Celestron AstroMaster 90EQ 21064 manual available for free PDF download: Instruction Manual

Celestron AstroMaster 90EQ 21064 Instruction Manual

Celestron AstroMaster 90EQ 21064 Instruction Manual (31 pages)

AstroMaster Series Telescopes

Brand: Celestron | Category: Telescope | Size: 11 MB

Table of Contents

Table of Contents
2
Introduction
3
Assembly
6
Telescope Basics
12
- Image Orientation
  13
- Focusing
  13
- Aligning the Finderscope
  13
- Calculating Magnification
  14
- Determining Field of View
  15
- General Observing Hints
  15
Astronomy Basics
16
- The Celestial Coordinate System
  16
- Motion of the Stars
  16
- Polar Alignment with Latitude Scale
  17
- Pointing at Polaris
  18
- Finding the North Celestial Pole
  18
- Polar Alignment in the Southern Hemisphere
  19
- Pointing at Sigma Octantis
  20
- Aligning the Setting Circles
  21
- Motor Drive
  22
Celestial Observing
23
- Observing the Moon
  23
- Observing the Planets
  23
- Observing the Sun
  23
- Observing Deep-Sky Objects
  24
- Seeing Conditions
  24
- Sky Illumination
  24
Astrophotography
25
Telescope Maintenance
26
- Care and Cleaning of the Optics
  26
- Collimation of a Newtonian
  26
  - Aligning the Primary Mirror
    27
  - Night Time Star Collimating
    27
Optional Accessories
29
Astromaster Specifications
30

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