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Table of Contents
Orion
Observer 90mm, 114mm, and 134mm
®
#52988
Congratulations on your purchase of an Orion telescope. Your new Observer Equatorial telescope is a ter-
rific instrument designed to provide outstanding views of celestial wonders. Any one of these three qual-
ity telescopes will reward you and your friends and family with many hours of enjoyment and discovery.
These instructions will help you set up, properly use, and care for your telescope. Please read them over
thoroughly before getting started.
A N E M P L O Y E E - O W N E D C O M P A N Y
Copyright © 2021 Orion Telescopes & Binoculars. All Rights Reserved. No part of this product instruction or any of its contents
may be reproduced, copied, modified or adapted, without the prior written consent of Orion Telescopes & Binoculars.
INSTRUCTION MANUAL
Equatorial Telescopes
#52986 Observer 114mm EQ Reflector
#52987 Observer 134mm EQ Reflector
#52988 Observer 90mm EQ Refractor
#52986
Corporate Offices: 89 Hangar Way, Watsonville CA 95076 - USA
Toll Free USA & Canada: (800) 447-1001
International: +1(831) 763-7000
Customer Support: support@telescope.com
#52987
IN 666 10/21
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Table of Contents
Related Manuals for Orion Observer 134mm
Summarization of Contents
III. Preparing the Telescope For Operation
Aligning and Using the Finder Scope
Guide on aligning and using the telescope's finder scope for accurate aiming.
IV. Understanding and Using the Equatorial Mount
Mount Setup and Balancing
Essential steps for balancing the telescope and performing polar alignment for tracking.
Mount Operation and Tracking
How to use slow-motion controls, track objects, and utilize setting circles for navigation.
V. Astronomical Observing
Observing Site and Conditions
Tips for selecting a good observing site and understanding atmospheric conditions.
Telescope and Eye Preparation
Guidance on cooling the telescope and allowing eyes to dark-adapt for optimal viewing.
Eyepiece Selection
Guide to choosing and using eyepieces for different magnifications.
Focusing the Telescope
Instructions on how to focus the telescope to achieve sharp images of celestial objects.
Observing Celestial Objects
Guidance on observing the Moon, planets, Sun, stars, and deep-sky objects.
VI. Collimation of Your Telescope's Optics
Mirror Alignment
Procedure for aligning the secondary and primary mirrors for optimal optical performance.
Star-Testing the Telescope
Method for star-testing to determine if the telescope's optics are accurately collimated.
VII. Telescope Care and Maintenance
Cleaning and Storage
Instructions on cleaning optical components and general care and storage of the telescope.
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