optics. Place a few drops of fluid on the tissue (not directly on
the lens), wipe gently, then remove the fluid with a dry tissue
or two. Do not “polish” or rub hard when cleaning the lens, as
this will scratch it. The tissue may leave fibers on the lens, but
this is not a problem; they can be blown off with a blower bulb.
Note: Never disassemble the telescope or eyepieces to
clean optical surfaces!
If you follow these simple instructions, your Orion Observer
70mm Altazimuth Refractor will provide you with years of
enjoyable exploration.
8. Specifications
Objective lens: 70mm-diameter (2.8") achromat
Objective lens coatings: multi-coated
Focal length: 700mm
Focal ratio: f/10
Magnification: 28x with 25mm eyepiece
Finder scope: 5x magnification, 24mm aperture
Diagonal: 90° star diagonal, mirror type, 1.25" barrel diameter
Eyepiece type: Kellner (three-element), fully coated, 1.25"
barrel diameter
Mount type: altazimuth
Tripod: aluminum, adjustable
9. Suggested Accessories
Soft Carrying & Storage Bag (#15157)
Made of rugged nylon, this case holds everything: the tube
assembly, the mount, and the tripod. Zipper access. Strap
handles.
Explorer™ II Eyepieces
Every observer should have several eyepieces of different
focal lengths to allow viewing of astronomical subjects at dif-
ferent magnifications. These eyepieces feature 3- or
4-element lens designs, with a 50° apparent field of view.
Fully antireflection coated. Threaded for filters. 1.25" barrels.
6mm (#8153), 10mm (#8152), 13mm (#8151), 17mm (#8154)
Moon Filter (#5662)
Cuts lunar glare 87%, revealing much more surface detail.
Threads into barrel of 1.25" eyepieces.
Solar Filter (#7706)
Allows safe viewing of the Sun. See the march of sunspots
across the Sun’s surface. This full-aperture glass filter pro-
vides a pleasing yellow-orange image of our nearest star,
unlike Mylar filters, which produce a blue image.
One-Year Limited Warranty
This Orion Observer 70mm Altazimuth Refractor 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 defective, provided
it is returned postage paid to: Orion Warranty Repair, 89 Hangar Way, Watsonville, CA 95076. If
the product is not registered, proof of purchase (such as a copy of the original invoice) is required.
This warranty does not apply if, in Orion’s judgment, the instrument has been abused, mis-
handled, or modified, nor does it apply to normal wear and tear. This warranty gives you
specific legal rights, and you may also have other rights, which vary from state to state. For fur-
ther
warranty service information, contact: Customer Service Department, Orion Telescopes &
Binoculars, P. O. Box 1815, Santa Cruz, CA 95061; (800) 676-1343.
Orion Telescopes & Binoculars
Post Office Box 1815, Santa Cruz, CA 95061
Customer Support Help Line (800) 676-1343 • Day or Evening
