กล้องดูดาวหักเหแสง 70 มม. Orion Observer 70mm Equatorial Refractor Telescope

Best for viewing
Lunar & Planetary

Best for image
Lunar & Planetary

User level
Beginner

Optical design
Refractor

Optical diameter
70 mm

Focal length
700 mm

Focal ratio
f/10.0

Coatings
Coated

Optics type
Air -spaced doublet

Glass material
Crown/Flint

Eyepleces
Explorer II 25.0mm , 10.0 mm(1.25″)

Magnification with Inclued eyepleces
28x 70x

Resolving power
1.65 aec*sec

Lower useful magnification
10x

Highest useful magnification
140x

Highest theoretical magnification
140x

Limiting stellar magnitude
11.9

Optical quality
Diffraction limited

Finder scope
EZ Finder II

Focuser
1.25″ Rack and pinion

Diagonal degrees
1.25 ” 90 Mirror Star

Mount type
Equational

Astro-Imageing capability
Lunar , planetary

Dovetail bar systems
NO

Motor drive compatility
Clock drive sold separately

Computerized compatibilty
Not compatible

Bearing material
Friction bearings

Counterweights
One 4.8 lb.

Tube material
Aluminum