กล้องดูดาวหักเหแสงอัตโนมัติ Orion StarSeeker IV 80mm GoTo Refractor Telescope

Best for viewing
Lunar & Planetary

Best for image
Lunar , Planetary & terrestrial

User level
Beginner

Optical design
Refractor

Optical diameter
80 mm

Focal length
900 mm

Focal ratio
f/11.2

Coatings
Muti – Coated

Optics type
Air -spaced doublet

Glass material
Crown/Flint

Eyepleces
3 Element 23.0 mm , 10 mm (1.25″)

Magnification with Inclued eyepleces
39x 90x

Resolving power
1.45 aec*sec

Lower useful magnification
11x

Highest useful magnification
94x

Highest theoretical magnification
160x

Limiting stellar magnitude
12.2

Finder scope
EZ Finder II

Focuser
Internal

Diagonal degrees
1.25 ” 90 Mirror Star

Mount type
Altazimuth

Astro-Imageing capability
Lunar , Planetary & terrestrial

Computerized compatibilty
Go to systems

Alignment procedure
Two – Star Alignment

Number of Objects in database
42,900

Tracking rates
Sidereal , Solar and Lunar

Motor speed
Ten different slewing speeds from 0.5x sidereal to over 600x sidereal

Motor type
DC servo motors with encoders

Power requirement
8-AA batteries or 12-volt DC

Available ports
RS-323

Tube material
Aluminum

Tripod material
Steel