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Orion 90 Instruction Manual

90mm rich-field refracting telescope

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W
elcome to a new world of adventure! Your Orion ShortTube 90 is a fine-quality instrument designed for both daytime ter-
restrial viewing and nighttime stargazing. Compact, portable, and easy to use, this versatile scope will provide many hours of
enjoyment for the whole family.
These instructions will help you set up and properly use and care for your telescope. Please read them over
thoroughly before getting started.
Focus lock setscrew
Eyepiece
90° star diagonal
Focus wheel
WARNING:
Never look at the sun with your telescope
(or even with just your eyes) without a professionally made
solar filter. Permanent eye damage or blindness could
result. Young children should use this telescope only with
adult supervision.
Avoid using the type of solar filter that screws into an eye-
piece. They are susceptible to cracking under the intense
heat that builds up near the focus point, and could cause
severe retinal damage. Use only the type of solar filter that
covers the front of the telescope. Be sure also to cover the
front of the finder scope with aluminum foil or another
opaque material to prevent physical damage to the internal
components of the scope itself as well as to your eyes.
Providing Exceptional Consumer Optical Products Since 1975
INSTRUCTION MANUAL
Orion
ShortTube
90mm Rich-Field Refracting Telescope
#9069
Finder scope alignment screws
Finder scope
The ShortTube 90mm Refractor
®
90
Finder scope bracket
1/4"-20 mounting block
Parts List
Qty.
Description
1
Optical tube assembly
1
26mm (19x) Plössl eyepiece (1.25")
1
90° star diagonal
1
6x30 finder scope
1
Objective lens cap
Getting Started
The ShortTube 90 comes nearly fully assembled from the factory. The
telescope's optics have been installed and collimated, so you should
not have to make any adjustments to them. Open the box and inspect
the contents to make sure all of the parts listed above are present.
Customer Support (800) 676-1343
E-mail: support@telescope.com
Corporate Offices (831) 763-7000
P.O. Box 1815, Santa Cruz, CA 95061
Dew/glare shield
IN 114 Rev. C 0899

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Summary of Contents for Orion 90

  • Page 1 90mm Rich-Field Refracting Telescope elcome to a new world of adventure! Your Orion ShortTube 90 is a fine-quality instrument designed for both daytime ter- restrial viewing and nighttime stargazing. Compact, portable, and easy to use, this versatile scope will provide many hours of enjoyment for the whole family.
  • Page 2 Also, give your eyes at least 20 minutes to dark-adapt to the night sky. You’ll be surprised at how many more stars you will see! Use a red flashlight, such as the Orion RedBeam LED Flashlight to see what you’re doing at the telescope, or to read star charts.
  • Page 3 Magnification = Telescope Focal Length (mm) Eyepiece Focal Length (mm) For example, the ShortTube 90, which has a focal length of 500mm, used in combination with a 26mm eyepiece, yields a power of 500 ÷ 26 = 19x.
  • Page 4 Call for assistance. • Universal Camera Adapter (1.25") (#5264): Required for through- the-telescope photography. • Soft Case for ShortTube 90 (#15166): Protects the telescope for transporting. • Sirius Plössl 1.25" Eyepieces: Recommended eyepieces for addi- tional magnifications. •...

This manual is also suitable for:

Shorttube 909069