Optical Tube Info:
Optical Design Newtonian Reflector
Aperture (mm) 127 mm (5″)
Focal Length 1000 mm (39″)
Focal Ratio 7.87
Focal Length of Eyepiece 1 (mm) 20 mm (0.79″)
Magnification of Eyepiece 1 50x
Focal Length of Eyepiece 2 (mm) 4 mm (0.16″)
Magnification of Eyepiece 2 250x
Barlow Lens 3x
Finderscope 5×24
Mount Info:
Mount Type German Equatorial
Accessory Tray No-Tool Tray with Eyepiece holder
Tripod Aluminum
Highest Useful Magnification 300x
Lowest Useful Magnification 18x
Limiting Stellar Magnitude 13
Resolution (Rayleigh) 1.1 arc seconds
Resolution (Dawes) 0.91 arc seconds
Light Gathering Power (Compared to human eye) 329x
Apparent Field of View 0.8°
Linear Field of View (@1000 yds) 43 ft (13 m)
Secondary Mirror Obstruction 41 mm (1.6″)
Secondary Mirror Obstruction by Diameter 32%
Secondary Mirror Obstruction by Area 10%
Optical Coatings Aluminum
Optical Tube Length 508 mm (20″)
Software Starry Night Basic Edition