Orion Observer80 EQ ultra Instruction Manual
INSTRUCTION MANUAL
Orion®
Observer
#9834 Equatorial Refracting Telescope
™
80 EQ Ultra
™
Providing Exceptional Consumer Optical Products Since 1975
Customer Support (800) 676-1343
E-mail: support@telescope.com
Corporate Offices (831) 763-7000
P.O. Box 1815, Santa Cruz, CA 95061
IN 080 Rev. A 0898
Tube ring
Tube ring lock knob
Objective Lens
Declination lock knob
(not shown)
Right ascension lock knob
Finder scope
Finder scope
alignment screws
Dual-ring finder
scope bracket
Eyepiece
Star diagonal
Focuser drawtube
Focus knob
Declination slow-motion control
Latitude lock knob
Azimuth lock knob
Tripod leg
attachment bolt
Dew cap
Declination setting circle
Right ascension setting circle
Counterweight shaft
Counterweight
Counterweight lock knob
Retaining washer and knob
Right ascension slow-motion control
Accessory tray
Accessory tray bracket
Figure 1. Observer 80 EQ Ultra Parts Diagram
Tripod leg lock bolt
Tripod leg
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Congratulations on your purchase of a quality Orion telescope! Your new Observer 80 EQ Ultra
Refractor is designed for high-resolution viewing of astronomical objects. With its precision optics and
equatorial mount, you’ll be able to locate and enjoy hundreds of fascinating celestial denizens, including
the planets, Moon, and a variety of deep-sky galaxies, nebulas, and star clusters.
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; a star wheel, or planisphere, available from Orion or from your local telescope shop, will
greatly help. 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 and properly use and care for your telescope. Please read them
over thoroughly before getting started.
Table of Contents
1. Parts List ................................................................................................................................ 3
2. Assembly ............................................................................................................................... 4
3. Balancing the Telescope ........................................................................................................ 4
4. Aligning the Finder Scope ..................................................................................................... 5
5. Setting Up and Using the Equatorial Mount .......................................................................... 5
6. Using Your Telescope—Astronomical Observing ................................................................... 7
7. Terrestrial Viewing .................................................................................................................. 9
8. Care and Maintenance .......................................................................................................... 9
9. Specifications ......................................................................................................................... 9
1. Parts List
Qty. Description
1 Optical tube assembly
1 German-type equatorial mount
2 Slow-motion control cables
1 6x30 achromatic crosshair finder scope
1 Dual-ring finder scope bracket
1 Tube mounting ring
1 Counterweight
1 Counterweight shaft
1 25mm (36x) Kellner eyepiece (1.25")
1 9mm (100x) Kellner eyepiece (1.25")
1 90° prism star diagonal (hybrid .965"/1.25")
1 Accessory tray
1 Accessory tray bracket
3 Tripod legs
3 Leg lock bolts
WARNING: Never look directly at the
Sun through your telescope or its finder
scope—even for an instant—without
a professionally made solar filter that
completely covers the front of the
instrument, or permanent eye damage could
result. Be sure to also cover
the front of the finder scope with an opaque
material. Young children should use this
telescope only with adult supervision.
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