2
Table of Contents
INTRODUCTION
..........................................................................................................................
3
ASSEMBLY
...................................................................................................................................
6
Setting up the Tripod
..................................................................................................................
6
Attaching the Equatorial Mount
..................................................................................................
7
Installing the Counterweight Bar & Counterweights
..................................................................
7
Attaching the Slow Motion Cables
.............................................................................................
8
Attaching the Telescope Tube to the Mount
...............................................................................
8
Installing the Diagonal & Eyepiece (refractor)
...........................................................................
9
Installing the Eyepiece on the Newtonians
.................................................................................
9
Moving the Telescope Manually
..............................................................................................
10
Balancing the Mount in R.A
. ....................................................................................................
10
Balancing the Mount in Dec
. ....................................................................................................
10
Adjusting the Equatorial Mount
................................................................................................
11
Adjusting the Mount in Altitude
...............................................................................................
11
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
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
ASTROPHOTOGRAPHY
............................................................................................................
25
Short Exposure Prime Focus Photography
...............................................................................
25
Piggyback Photography
............................................................................................................
25
Planetary & Lunar Photography with Special Imagers
.............................................................
25
CCD Imaging for Deep Sky Objects
........................................................................................
25
Terrestrial Photography
............................................................................................................
25
TELESCOPE MAINTENANCE
..................................................................................................
26
Care and Cleaning of the Optics
...............................................................................................
26
Collimation of a Newtonian
......................................................................................................
26
OPTIONAL ACCESSORIES
.....................................................................................................
29
AstroMaster Specifications
...........................................................................................................
30