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telescope AstroMaster 90EQ

Code: 21064
Description

telescope refractor D90, F1000, f/11

Price: $349
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Optical Design Refractor
Aperture (mm) 90 mm (3.54 in)
Focal Length 1000 mm (39 in)
Focal Ratio 11
Focal Length of Eyepiece 1 (mm) 20 mm (0.79 in)
Magnification of Eyepiece 1 50 x
Focal Length of Eyepiece 2 (mm) 10 mm (0.39 in)
Magnification of Eyepiece 2 100 x
Finderscope Built-on StarPointer
Star Diagonal Erect Image Diagonal - 1.25"
Mount Type CG-3 Equatorial
Tripod 1.25" steel tube legs
Highest Useful Magnification 213 x
Lowest Useful Magnification 13 x
Limiting Stellar Magnitude 12.3
Resolution (Rayleigh) 1.55 arc seconds
Resolution (Dawes) 1.29 arc seconds
Light Gathering Power (Compared to human eye) 165 x
Apparent Field of View 1 °
Linear Field of View (@1000 yds) 53 ft (16 m)
Optical Coatings Multi Coated
Optical Tube Length 36 in (914 mm)
Warranty 2-year Telescope Warranty

 

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