Table Of Contents; Parts List - Orion Observer 80ST Instruction Manual

Congratulations on your purchase of an Orion telescope. Your new Observer 80ST Equatorial Refractor is
a terrific starter instrument for exploring the exotic wonders of the night sky. Designed to be compact and
easy to use, it will provide many hours of enjoyment for the whole family.
If you have never owned a telescope before, we would like to welcome you to amateur astronomy. Take
some time to familiarize yourself with the night sky. Learn to recognize the patterns of stars in the major
constellations. With a little practice, a little patience, and a reasonably dark sky away from city lights, you'll
find your telescope to be a never-ending source of wonder, exploration, and relaxation.
These instructions will help you set up, properly use, and care for your telescope. Please read them over
thoroughly before getting started.

Table of Contents

1. Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2. Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
3. Preparing the Telescope for Operation . . . . . . . . . . .5
4. Understanding and Using the Equartorial Mount . . .7
5. Astronomical Observing . . . . . . . . . . . . . . . . . . . . .10
6. Worthwhile Optional Accessories . . . . . . . . . . . . .12
7. Telescope Care and Maintenance . . . . . . . . . . . . .13
8. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
WARNING: Never look directly at the Sun through
your telescope-even for an instant-without a
professionally made solar filter that completely
covers the front of the instrument, or permanent eye
damage could result. Young children should use this
telescope only with adult supervision.
2

1. Parts List

Part.
A - Tripod legs
B - Hex head tripod mounting bolts (3")
C - Washers (5/8")
D - Wing nuts
E - Leg lock thumbscrews
F - Accessory tray
G - Screws
H - Washers (3/8")
I - Wing nuts (small)
J - Equatorial mount
K - Azimuth lock knob (and washer)
L - Latitude adjustment bolt
M - Counterweight shaft
N - Counterweight lock knob
O - Counterweight
P - Slow-motion cables
Q - Mounting platform
R - Telescope optical tube
S - Red dot finder scope
T - Dust cover
U - 25mm Kellner eyepiece
V- 10mm Kellner eyepiece
W - Star diagonal
Quantity
3
3
3
3
3
1
3
3
3
1
1
1
1
1
1
2
1
1
1
1
1
1
1