Orion Observer II 70mm Altazimuth Refractor User Manual

3
Figure 1. The parts of the Observer II 70 Altaz telescope.
A
P
H
I
J
K
L
F
G
C
M
D
B
O
N
E

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.