FirstScope 90EQ Telescope
Item #: 21085Description
Specifications
General | |
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Aperture: | 90mm (3.54") |
Focal Length: | 1000mm (39") |
Focal Ratio: | f/11 |
Focal Length of Eyepiece 1: | 20mm (0.79") |
Magnification of Eyepiece 1: | 50x |
Focal Length of Eyepiece 2: | 10mm (0.39") |
Magnification of Eyepiece 2: | 100x |
Finderscope: | StarPointer™ red dot finderscope |
Star Diagonal: | 1.25 Erect Image |
Mount Type: | Equatorial, with Quick release |
Accessory Tray: | Round, Thread-in |
Tripod: | Aluminum |
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 |
Apparent Field of View: | 0.8° |
Linear Field of View (@1000 yds): | 42 ft (13 m) |
Optical Coatings: | Multi-Coated |
Optical Tube Length: | 1016mm (40") |
Total Telescope Kit Weight: | 22 lbs (9.98 kg) |