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Backpacker 90M Telescope

$199.00

Item #: S11320

Description

Specifications

General
Optical Design: Maksutov-Cassegrain
Aperture: 90mm (3.54")
Focal Length: 1250mm (49")
Focal Ratio: f/14
Focal Length of Eyepiece 1: 25mm (0.98")
Magnification of Eyepiece 1: 50x
Focal Length of Eyepiece 2: 12.5mm (0.49")
Magnification of Eyepiece 2: 100x
Focal Length of Eyepiece 3: 6.3mm (0.25")
Magnification of Eyepiece 3: 198x
Finderscope: 8x20 Erect Image Finder
Mount Type: Altazimuth Motorized
Highest Useful Magnification: 213x
Lowest Useful Magnification: 13x
Limiting Stellar Magnitude: 12.3
Resolution (Rayleigh): 1.55 arc seconds
Resolution (Dawes): 1.29 arc seconds
Light Gathering Power (Compared to human eye): 165x
Optical Tube Length: 318mm (12.5")
Optical Tube Weight: 3 lbs (1.36 kg)

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