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Specifications – Orion 3 EQ User Manual

Page 11

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Your SpaceProbe 3 EQ telescope requires very little mechan-
ical maintenance. The optical tube is steel and has a smooth
painted finish that is fairly scratch resistant. If a scratch does
appear, it will not harm the telescope. Refer to the appendix B
at the end of this manual for details of how to clean your tele-
scope’s optics.

8. Specifications

Optical tube: Steel

Primary mirror diameter: 76mm

Primary mirror coating: Aluminum with silicon dioxide (SiO2)

overcoat

Secondary mirror minor axis: 19.9mm

Focal length: 700mm

Focal ratio: f/9.2

Focuser: Rack and pinion, accepts 1.25” eyepieces

Eyepieces: 25mm and 10mm Explorer II eyepieces, 1.25”

Magnification: 28x (with 25mm) and 70x (with 10mm)

Mount: German Equatorial, EQ-1

Tripod: Aluminum

Weight: 16.6 lbs.

Motor drive: Optional

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