Orion Observer II 70mm Altazimuth Refractor User Manual

10
One-Year Limited Warranty
This Orion product is warranted against defects in materials or workmanship for a period of one year from the date
of purchase. This warranty is for the benefit of the original retail purchaser only. During this warranty period Orion
Telescopes & Binoculars will repair or replace, at Orion’s option, any warranted instrument that proves to be defec-
tive, provided it is returned postage paid. Proof of purchase (such as a copy of the original receipt) is required. This
warranty is only valid in the country of purchase.
This warranty does not apply if, in Orion’s judgment, the instrument has been abused, mishandled, or modified, nor
does it apply to normal wear and tear. This warranty gives you specific legal rights. It is not intended to remove or
restrict your other legal rights under applicable local consumer law; your state or national statutory consumer rights
governing the sale of consumer goods remain fully applicable.
For further warranty information, please visit www.OrionTelescopes.com/warranty.
Orion
®
Telescopes & Binoculars
Corporate Offices: 89 Hangar Way, Watsonville CA 95076 - USA
Customer Support: www.OrionTelescopes.com/contactus
Copyright © 2017 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.
larger lenses, clean only a small area at a time, using a fresh
lens tissue on each area. Never reuse tissues.
When bringing the telescope inside after an evening’s viewing
it is normal for moisture to accumulate on the lenses due to the
change in temperature. We suggest leaving the telescope and
eyepieces uncovered overnight to allow the condensation to
evaporate.
7. Specifications
Objective lens: 70mm (2.8") diameter, achromatic
Effective focal length: 700mm
Focal ratio: f/10
Lens coatings: Antireflection coated
Focuser: Rack-and-pinion, accepts 1.25" accessories
Eyepieces: 25mm and 10mm Kellner, antireflection coated,
1.25" barrel diameter, threaded for Orion filters
Eyepiece magnification: 28x (with 25mm eyepiece) and 70x
(with 10mm eyepiece)
Finder scope: Red dot finder scope
Mount: Altazimuth yoke
Tripod: Aluminum
Total instrument weight: 5 lbs. 8oz.

Orion Observer II 70mm Altazimuth Refractor Specifications

Optical Specifications

objective lens diameter	70 mm
effective focal length	700 mm
focal ratio	f/10
lens coatings	antireflection coated

Eyepiece Specifications

eyepiece magnification with 25mm eyepiece	28x
eyepiece magnification with 10mm eyepiece	70x
eyepiece barrel diameter	1.25 inch

Physical Characteristics

focuser type	rack-and-pinion
mount type	altazimuth yoke
total instrument weight	5 lbs. 8 oz.