Magnification: 20 - 60x Objective Lens Diameter: 80mm (3.15") Eyepieces: 8mm - 24mm (.31" - .94") Angular Field of View: 2.0° - 1.0° Linear Field of View (@1000 yds) / @1000 m): 105 ft (32 m) @ 20x| 53 ft (16.15 m) @ 60x Focal Length: 480mm (18.9") Exit Pupil: 4mm - 1.3mm (.15" - .05") Eye Relief: 18mm (.71") Close Focus: 26.2 ft (8 m) Twilight Factor: 69.2 - 40 Relative Brightness: 16 - 1.7 Limiting Stellar Magnitude: Ideal: 12.02 Moderate: 11.02 Poor: 10.02 Lens Coatings: Fully Multi-Coated Prism Glass (Type): BaK-4 Prism Coatings: FMC Weight: 57 oz (1616 g) Environmental Protection: Waterproof Nitrogen Filled: Yes Tripod Adaptable: Yes Carrying Case: Padded green woven nylon view-through Camera Adaptable: Yes Dimensions: 490mm x 90mm x 190mm (19.3" x 3.5" x 7.5") Included Items: Zoom eye piece with integrated T-adapter Carrying case Eyepiece lens cap Eyepiece Port cover Eyepiece carrying case Eyepiece pouch Lens cloth Instrument manual