NOVA 20x90 mm Giant Astronomical Binoculars - BN

NOVA 20x90 mm Giant Astronomical Binoculars - Brand New

We are offering Real Magnification and Objective Lens Diameter 20x90 mm NOVA Astronomical Binoculars. Do not be fooled by false and exaggerated designations of similar binoculars that actually do not represent real magnifications and objective lens size. You are welcome to contact us for more detailed information before placing your bid

 We are offering you an ALL METAL BODY (including objective tubes) 20x90 mm NOVA Astronomical Binoculars. This model has excellent eye relief for people who wear glasses and has soft rubber folded eye caps.  This binocular may be used for: Astronomical Observation, Nature Viewing, Marine and Long Distance Surveillance, Targeting and Leisure Viewing. 

The Central Stabilizing Bar in the middle helps the binoculars' stability and reduces the chance of miscollimation. The bar can be directly attached to a tripod so there is no need for an additional tripod adapter.

This binocular is equipped with Highest Quality High Index BaK-4 Porro Prisms for the maximum light transmissivity and reduces chromatic aberration. 

The FULLY MULTI COATED lenses minimize internal light loss and reflection,  improve image sharpness and provide the best light transmission and brightest images.  

Combination of the highest quality BaK-4 prisms and Fully Multi Coated lenses will satisfy viewer's highest demand for quality optics.

The binocular is black rubber armored adding important durability. The package includes Lens Caps, a Sturdy Carrying Case and Lens Cleaning Cloth.

All binoculars are inspected for mechanical work and collimation before shipment.

SPECIFICATIONS:

Magnification: 20 x

Objective Lens Diameter: 90 mm

Prisms: High Index BaK-4 Porro

Lens Coating: Fully Multi Coated

Field of view at 1000 m- 56 m

Exit Pupil: 4.5 mm

Eye Relief: 18 mm

Length: 41 cm (16 in)

Weight: 3.7 kg (8.2 lbs) 

Additional Information:

Prisms types:

- High density optical glass.

- BK7 prisms are made of borosilicate high density glass.

- BaK-4 high index prisms are made of much denser Barium Crown Glass that eliminates internal light scattering. This is the highest grade of prism. They are more expensive then BK7 and maintain superior sharpness on the edges in comparison to BK7 prisms.

Lens Coating types:

Fully Coated – This coating type uses Magnesium Fluoride to coat glass-to-air surfaces with the exception of prisms. This coating has one layer only and comes usually in blue lens color.

Multi Coated – This coating type is higher quality than "Fully Coated" type of coating that comes in 5-7 layers on glass-to-air surfaces and simple layer on 4 surfaces of prisms. It comes usually in the green lens color.

Fully Multi Coated – This type of coating is higher quality than similar "Multi Coated" type of coating and comes with additional multiple layers that cover all lens surfaces and long sides of the prisms. It comes also in the green lens color.

The better the coating the less reflection and light scattering that results in higher level of light transmission and better image contrast.

Shipping & Handling:

Canada: $28 (Northern and Remote delivery locations please contact us for shipping costs quotation)

United States: $36

Other Regions: Please Email us before bidding for additional Shipping Information

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