Table Of Contents; Included Parts - Orion CT80 Instruction Manual

Congratulations on your purchase of an Orion telescope. Your new CT80 Equatorial Refractor is a terrific
starter instrument for exploring the exotic wonders of the night sky. Designed to provide a wide field of
view and excellent portability, 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 fascination, 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. Included Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2. Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
3. Preparing the Telescope for Operation . . . . . . . . . . .4
4. Understanding and Using the Equartorial Mount . . .8
5. Astronomical Observing . . . . . . . . . . . . . . . . . . . . . 11
6. Worthwhile Optional Accessories . . . . . . . . . . . . .13
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. Included Parts

Unpack all of the parts and lay them out in your workspace.
Make sure all the parts listed below and shown in Figure 1
are present. Save the shipping box and packaging material. In
the unlikely event that you need to return the telescope, you
must use the original packaging. Initial assembly of the tele-
scope is easy and should take only about 20 minutes.
Part
A - Tripod
B - Accessory tray
C - Equatorial mount
D - Counterweight shaft
E - Counterweight
F -Slow-motion cables
G - Tube mounting clamp
H - Optical tube assembly
I - Red dot finder scope
J -Star diagonal
K - 25mm Kellner eyepiece
L - 10mm Plossl eyepiece
M - Dust cover
Quantity
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2
1
1
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