Celestron 20x80 SkyMaster Pro Binocular

Product #38659 | SKU 72031 | Celestron
In Stock with Supplier Usually ships in 4 - 6 working days what does this mean?
Our Price $669.00 AUD
In Stock with Supplier Usually ships in 4 - 6 working days what does this mean?
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  • BAK4 Porro Prisms
  • XLT Fully Multi-Coated Optics
  • Wide-Angle Viewing: 64°
  • Nitrogen Filled, Waterproof & Fogproof
  • Aluminium and Polycarbonate Chassis


Designed as an ideal optic for wide-view astronomical or long-range terrestrial observation, the Celestron 20x80 SkyMaster Pro Binocular features their proprietary XLT multi-coating system to reduce reflection and increase light transmission through the entire optical system. The porro prism configuration provides a rich depth of view and high-contrast to draw users into an immersive observational experience. The combination of optical coatings, prism, and over-sized 80mm objectives produce high-contrast views that are bright and crisp with accurate colour fidelity.

To help reduce weight, the binocular housing is made from a combination of polycarbonate polymer and aluminium. The aluminium provides strength in key areas, while the polycarbonate is temperature-resistant to limit expansion and contraction in extreme temperatures, which can cause the optical components to move out collimation and preventing the ability to achieve sharp focus. Large objectives and long optical tubes make the SkyMaster Pro fairly heavy with a centre of gravity biased forward, so hand-holding it may cause fatigue and noticeable hand-shake. A centre stabiliser bar has a built-in 1/4"-20 tripod adapter to mount the instrument, with a detachable rail for a red-dot finderscope. To handle a wide range of environments, the optical tubes are nitrogen-filled and O-ring sealed to be water and fogproof.

Key Features:

Optical Performance
  • 20x magnification
  • 80mm objective lenses
  • BAK4 porro prism optical path
  • Proprietary XLT fully multi-coated optics increases light transmission for bright high-contrast images
  • 168' field of view at 1000 yards
  • 64° wide-angle viewing
  • 15.5mm eye relief, 4.0mm exit pupil
  • Minimum Focus Distance of 20.18 m
Use and Handling
  • ±4 dioptric correction
  • 56-72mm interpupillary adjustment range
  • Detachable RSR (Reflex Sight Ready) rail for attaching an optional red dot finderscope
  • Traditional fold-down eyecups for comfortable use with or without eyewear
  • Includes winged eyecups to block stray peripheral light that can affect vision
Construction Details
  • Lightweight and durable polycarbonate and aluminium chassis
  • Nitrogen-filled for water and fogproof performance
  • Rubber armour protects against impacts and provides slip-resistant grip
  • Built-in tripod adapter for easy mounting


Prism Type Porro
Magnification 20x
Objective Lens Diameter 80mm
Angle of View 3.2° (actual)
Field-of-View 168.0' @ 1000 yd / 55.8 m @ 1000 m
Minimum Focus Distance 65.6' / 19.99 m
Exit Pupil Diameter 4.0 mm
Eye Relief 15.5 mm
Interpupillary Adjustment 56.0 - 72.0 mm / 2.2 - 2.8"
Dioptric Correction ±4
Focus Type Centre
Tripod Mount Yes
Dimensions 13.0 x 9.5 x 4.0" / 33.02 x 24.13 x 10.16 cm
Weight 5.4 lb / 2.45 kg


Prism Type Porro (BAK4)
Magnification 20x
Objective Lens Diameter 80 mm
Angle of View 3.2° (Actual)
Field of View 168' @ 1000 yd / 56 m @ 1000 m
Minimum Focus Distance 66.2' / 20.18 m
Exit Pupil Diameter 4 mm
Eye Relief 15.5 mm
Interpupillary Adjustment 56 to 72 mm / 2.2 to 2.8"
Dioptre Adjustment -4 to +4
Focus Type Centre
Fogproof Yes, Nitrogen Filled
Water Resistance Waterproof
Dimensions 13 x 9.5 x 4" / 33 x 24.1 x 10.2 cm
Weight 5.4 lb / 2.4 kg


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  • Product: Celestron 20x80 SkyMaster Pro Binocular
  • Manufacturer: Celestron
  • Model: 72031
  • SKU: 72031
  • RM Product #: 38659

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