ORION TELESCOPES & BINOCULARS Observer II 70mm Altazimuth Refractor User Manual

INSTRUCTION MANUAL
IN 580 06/17
Orion
®
Observer
™
II 70mm
Altazimuth Refractor
#10275
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ORION TELESCOPES & BINOCULARS Observer II 70mm Altazimuth Refractor Specifications

Optical Specifications

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

Eyepieces

eyepiece focal length	25 mm and 10 mm
eyepiece magnification with 25 mm eyepiece	28x
eyepiece magnification with 10 mm eyepiece	70x

Physical Characteristics

focuser type	Rack-and-pinion
total instrument weight	5 lbs. 8 oz.
tripod material	Aluminum

Summary

Assembly Guide

Preparing Telescope for Operation

Aligning Red Dot Finder Scope

Align the red dot finder scope with the main telescope for accurate pointing.

Astronomical Observing Tips

Eyepiece Selection

Guidance on choosing eyepieces to achieve different magnifications.

Focusing the Telescope

Instructions on how to properly focus the telescope for a clear image.

Objects to Observe

Recommendations for celestial objects to view, like the Moon and planets.

Optional Accessories

Product Specifications