Specifications: Type: Prism binoculars Magnification: 10x Objective Lens Effective Diameter: 1.7"
Filter Size: 2.0"
Real Field of View: 6.5° Apparent Field of View: 65° Objective Lens Construction: 4 elements in 3 groups (including protective glass, UD Lens) Eyepiece Lens Construction: 7 elements in 5 groups Exit Pupil Diameter: 0.2"
Eye Relief: 0.6"
Prism Type: Porro
Specifications: Type: Prism Binoculars
Magnification: 15x
Objective Lens Effective Diameter: 50mm
Filter Size: 58mm
Real Field of View: 4.5°
Apparent Field of View: 67.5°
Objective Lens Construction: 4 elements in 3 groups (including protective glass)
Eyepiece Lens Construction: 7 elements in 5 groups
Exit Pupil Diameter: 3.3mm
Eye Relief: 15mm
Prism Type: Porro II
Eye Width adjustment: 58mm ~ 76mm
Focusing Method: Manual focusing by turning the focusing knob
Dioptric Correction: ±3.0 diopters
Closest Focusing Distance: 6 m/19.7 ft.
Image Stabilizer: Vari-Angle Prism
Correction angle: ±0.7°
Tripod Socket: Provided
Power Source: 2 x AA
Dimensions: 152 x 193 x 1180mm/6.0" x 7.6" x 3.2"
Weight: 1180g/41.6 oz. (excluding batteries)
Specifications: Aperture (mm): 25 mm (0.98 in)
Magnification: 10 x
Caps: No
Carrying Case: Soft case included
Weight (oz): 4 oz. (113 g)
Angular Field of View (deg): 5.7 degrees
Linear Field of View (@1000 yds): 300 ft (91 m)
Linear Field of View (@1000 m): 100 m (328 ft)
Exit Pupil (mm): 2.5 mm (0.1 in)
Eye Relief (mm): 11 mm (0.43 in)
Near Focus: 26
Prisms: BK-7
Optical Coatings: Multi-Coated
Specifications: Optical Design: Schmidt Cassegrain Aperture: 203.2mm Focal Length: 2032 mm Focal Ratio: 10 Focal Length of Eyepiece 1: 40 mm Focal Length of Eyepiece 2: 13 mm Magnification of Eyepiece 1: 51x Magnification of Eyepiece 2: 156x Finderscope:StarPointer Star Diagonal:1.25" Mount Type:Single Fork Arm Altazimuth Tripod:Stainless Steel Power Requirements:Internal battery included HIghest Useful Magnification:480x Lowest Useful Magnification:29x Limiting Stellar Magnitude:14 Resolution (Rayleigh):0.69 arc seconds Resolution (Dawes):0.57 arc seconds Light Gathering Power (Compared to human eye):843x Secondary Mirror Obstruction:2.5 in(64 mm) Secondary Mirror Obstruction by Area:9.77% Optical Coatings:StarBright XLT Optical Tube Length:17 in Max Slew Speed:4 degrees per second Tracking Rates:Sidereal, solar and lu...