Barska Blackhawk 20-60x70 Spotting Scope

The Barska Blackhawk 20-60x70 Spotting Scope has multi-coated optics and a large objective lens that deliver stunningly crisp, clear images. Variable zoom magnification allow you to lock on to your subject then zoom in for greater detail. It's 100% waterproof and fogproof and along with the shock absorbing armor and glare reducing extendable shade, it is designed for use in the great outdoors. It is the ultimate spotting scope for whale watching and bird watching - you can even use it to view the moon!

General Features

• Variable 20-60x zoom
• Massive 70mm objective lens delivers brighter images in low-light conditions
• Features BAK-4 prism glass for sharper and brighter images
• Glare reducing sun shade
• Ergonomically designed with shock-absorbing rubber armor for maximum protection and enhancing overall handling
• Completely waterproof and fogproof – suitable for use in all conditions
• Soft foldable eyecup for comfort
• Includes premium hard carry case, pan-head tripod and soft cleaning cloth

• Magnification: 20-60x
• Objective lens: 70mm
• Waterproof: Yes
• Fogproof: Yes
• Prism glass: BAK-4
• Prism type: Porro
• Optical coating: Multi coated
• Eyepiece system: Straight
• Exit pupil: 3.3mm@20x, 1.4mm @60x
• Field of view (at 1000m): 32m@20x, 17.5m@60x
• Close focus: 10m
• Eye relief: 14.4mm@20x, 11.2mm@60x
• Weight of scope: 1kg
• Total weight (including carry case): 4kg
• Length of scope: 41.5cm
• Height of tripod: 25cm

GLOSSARY OF TERMS - BINOCULARS AND SPOTTING SCOPES

Magnification

• Number of times the object being viewed is enlarged e.g. 8x 25 - objects are 8 times bigger than seen with the naked eye.

• Diameter of front lens e.g. 8x 25 - 25mm lens. Also called aperture, the larger the size of the objective lens, the more is light gathered and the brighter the image will appear.

• Roof: The prisms overlap and are aligned in a straight line with the lenses, allowing for a slim construction.
• Porro: The objective is offset from the eyepiece, gives a greater depth of perception and a wider field of view.
• Reverse Porro: The objective is offset from the eyepiece in a horizontal way reducing the total size of the construction by about 30 percent compared to the traditional Porro prism system.

• Various coating processes on the lenses and prisms determine the brightness and light gathering ability, providing higher contrast and brighter, sharper images.
• Coated: A single layer on at least one lens surface.
• Fully Coated: Single layer on all air-to-glass lens surfaces.
• Multi-Coated: Multiple layers on at least one lens surface.
• Fully Multi-Coated: Multiple layer on all air-to-glass lens surface.

• This is the side-to-side linear measurement of what you can see through the binoculars, at a distance of 1000 metres. The higher the magnification the narrower the field of view.

• The closest distance to the object that the binoculars can be used while retaining a sharp focus.

• The common types of optical prisms are barium-crown (BAK-4) glass or borosilicate (BK-7) glass. The BAK-4 is a higher quality glass that reduces light scattering, resulting in sharper and brighter images.

• Spotting scopes can be O-ring sealed for complete waterproof protection, and nitrogen-purged to prevent fogging inside the optical surfaces. These models are able to keep completely dry inside after immersion in water and are suitable for all weather conditions.

• This is the optimal distance a spotting scope should be held away from the human eye to observe the entire field of view. Long Eye Relief (LER) reduces eyestrain and provides an extra margin of comfort and safety.