Celestron SkyMasterPRO 20x80 – Waterproof Porro Prism Binoculars

Celestron SkyMasterPRO 20x80 – Waterproof Porro Prism Binoculars

DESCRIPTION

The Celestron SkyMasterPRO 20x80 binoculars are designed for astronomical or distant terrestrial observation. Featuring large 80 mm objective lenses, they offer excellent light-gathering capability for low-light conditions. The optical system uses BaK-4 Porro prisms and fully multi-coated XLT optics for high contrast and bright images.

The polycarbonate and aluminum housing is fully waterproof and nitrogen-filled to prevent internal fogging. A built-in tripod adapter ensures stable viewing, and a removable RSR rail allows the attachment of a reflex sight. Supplied with a nylon case, interchangeable eyecups, lens caps, neck strap, cleaning cloth, and manual.

TECHNICAL SPECIFICATIONS

Type: binoculars
Model: SkyMasterPRO 20x80
Brand: Celestron
Prism type: Porro – BaK-4 glass
Optical coatings: fully multi-coated (XLT)
Magnification: 20x
Objective lens diameter: 80 mm
Objective focal length: 329.15 mm
Angular field of view: 3.2°
Linear field of view at 1000 m: 56 m
Exit pupil: 4 mm
Eye relief: 15.5 mm
Close focus: 20.2 m
Interpupillary distance: 56 – 72 mm
Diopter adjustment: ±4
Twilight factor: 40
Relative brightness: 16
Limiting stellar magnitude: Ideal 12.02 | Moderate 11.02 | Poor 10.02
Weight: 2449 g
Waterproof: yes
Nitrogen-filled: yes
Tripod adaptable: yes (built-in adapter)
Dimensions: 330.2 × 241.3 × 101.6 mm
Included accessories:
• RSR reflex sight rail
• Objective lens caps
• Interchangeable eyecups
• Rainguard
• Neck strap
• Cleaning cloth
• Nylon case
• Instruction manual
Warranty: 60 months