Designed as an ideal optic for wide-view astronomical or long-range terrestrial observation, the Barska 20x80 Cosmos WP Binocular features multi-coated optics to reduce reflection and increase light transmission through the entire optical system, and traditional Porro prisms that provide a rich depth of view and high-contrast to draw users into an immersive viewing experience. This combination of optical coatings, prisms, over-sized objectives, and individually focusable eyepieces produce high-contrast views that are bright, clear and crisp, and tack-sharp.
To help offset the weight of the large objectives, Barska manufactured the chassis out of a durable aluminium alloy with a textured armouring on the outside to help protect from bumps and impacts while offering a slip-resistant grip. Due to the Cosmos' large objectives and long optical tubes it can feel fairly heavy with a centre of gravity biased forward, so hand-holding it may cause fatigue and noticeable hand-shake. To facilitate putting it on stabilising systems, its centre stabiliser bar has a built-in 1/4"-20 tripod adapter to mount the instrument. To handle a wide range of environments, the optical tubes are O-ring sealed to be water and fogproof.
Features
Optical Performance
- Powerful 20x magnification
- Oversized 80mm objective lenses
- BAK4 Porro prism optical path
- Anti-reflection multi-coated optics increase light transmission and contrast, and improves colour rendition
- 52.1 m field of view at 1000 yards
- Wide 60° apparent angle of view
Use and Handling
- Ideal for wide-field astronomical or long-distant terrestrial use
- Centre stabiliser bar
- Integrated 1/4"-20 tripod mount
- Sliding mount enables proper balancing on tripod/head
- Individual eyepiece focusing allows for precise tack-sharp views
- Fold-down rubber eyecups for use with or without eyewear
- Comfortable 4mm exit pupil
- Long 15.4mm eye relief
Construction Details
- Lightweight and durable aluminium alloy chassis
- Textured rubber armouring provides a slip-resistant grip with impact protection
- O-ring sealed to be water and fogproof
