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Optical Design Newtonian Reflector Aperture 114mm (4.49") Focal Length 900mm (35") Focal Ratio 7.89 Focal Length of Eyepiece 1 20mm (0.79") Magnification of Eyepiece 1 45x Focal Length of Eyepiece 2 4mm (0.16") Magnification of Eyepiece 2 225x Barlow Lens 3x Finderscope 5x24 Mount Type German Equatorial Accessory Tray No-Tool Tray with Eyepiece holder Tripod Aluminum Highest Useful Magnification 269x Lowest Useful Magnification 16x Limiting Stellar Magnitude 12.8 Resolution (Rayleigh) 1.22 arc seconds Resolution (Dawes) 1.02 arc seconds Light Gathering Power (Compared to human eye) 265x Apparent Field of View 0.9° Linear Field of View (@1000 yds) 48 ft (15 m) Secondary Mirror Obstruction 25mm (1") Secondary Mirror Obstruction by Diameter 22% Secondary Mirror Obstruction by Area 4.96% Optical Coatings Aluminum Optical Tube Length 864mm (34") Software Starry Night Basic Edition
