Description
Optical Design Refractor Aperture (mm) 100 mm (3.94 in) Focal Length (mm) 540 mm (21 in) Focal Ratio 5.4 Magnification 1 22x-67x Highest Useful Magnification 236 x Lowest Useful Magnification 14 x Limiting Stellar Magnitude 12.5 Resolution (Rayleigh) 1.39 arc seconds Resolution (Dawes) 1.16 arc seconds Light Gathering Power 204 x Angular Field of View 1.9/ 0.9 Linear Field of View (@1000 m) 33 / 17 m (108 ft) Linear Field of View (@1000 yds) 100 / 50 Eye Relief (mm) 20 mm (0.79 in) Near Focus 26 ft (7.92 m) Prisms BaK-4 Optical Tube Length 20 in (508 mm) Weight (oz) 89 oz (2523 g)
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