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