Binoculars > Instruments > Explore Scientific > BT > Explore Scientific Binoculars BT-82 SF

Product no.: 75544

Binoculars BT-82 SF

Name: Explore Scientific Binoculars BT-82 SF
Brand: Explore Scientific
Price: 1240 USD

~~RRP: $ 1,510.00~~ Our price:

$ 1,240.00 incl. VAT, plus shipping costs

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Product description Specifications Recommended accessories Customer reviews (0)

Product description

More about the series BT...

Specifications

Capacity

Performance data enables binoculars to be compared with one another.

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Type of build

Describes the internal structure of a pair of binoculars, thereby further subdividing the different types.

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Porro prisms

A classic binoculars design, in which the objective lenses are slightly further apart than the eyepieces.

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Magnification

The first number in the binoculars’ model number represents the magnification. It specifies how much larger an object appears compared to when viewed with the naked eye.

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Front lens diameter (mm)

Front lens diameter

The second specification in the binoculars’ model number is the front lens diameter. The larger it is, the more light the binoculars collect.

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Focal length (mm)

470

Exit pupil (mm)

Exit pupil

Relates to the beam of light emitted by the eyepiece. The exit pupil is closely associated with the brightness of a pair of binoculars.

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3,5

Eye relief (mm)

Eye relief

The eye relief specifies the maximum distance from the eyepiece at which the entire field of view can still be seen. A suitable distance for spectacles wearers is >16mm.

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Eyepiece cups

The eyecups are located on the eyepieces and protect they eyes from stray light.

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folding

Interpupillar distance (mm)

Interpupillary distance

The interpupillary distance indicates how far the eyepieces or tubes can be pushed together or pulled apart. This is an important indication, since each person has a different interpupillary distance.

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54-76

Glass material

A distinction is made between different glass materials. Through the use of special types of glass, the optical image can be optimized.

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BaK-4

A binoculars prism made of Barium Crown glass that is commonly used in high-quality binoculars. It is a byword for bright neutral images and high resolution.

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Lens coating

Coatings on optical surfaces have the job of minimising annoying reflections. In this way light transmission and contrast is increased.

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fully, multiple

Focusing system

Binoculars are focused by focusing on the object, or rather the eyes of the observer.

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Single focusing

Handle

yes

Special features

Binoculars can be equipped with additional functions such as an image stabilizer or a zoom.

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Zoom function

The binoculars’ magnification may be variably adjusted using either a lever or a scroll-wheel.

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Eyepieces for spectacle wearers

These eyepieces have a relatively large eye relief. It is possible to wear spectacles while observing and still benefit from a comfortable viewing position.

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yes

Image stabilizer

Compensates for the natural trembling of the hands. The picture is so stable, as if you were observing using a tripod.

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Compass

On these models, the compass display is usually shown in a small part of the field of view. A distinction is made between digital and manual versions.

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Rangefinder

An automatic or manual feature for measuring distances.

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Splash-proof

These binoculars may only be exposed to moderate moisture or light drops of water.

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yes

Watertight

Watertight optics are equipped with special seals and are gas-purged. This is usually with nitrogen or argon gas. Since these gases are heavier than air, they cannot escape.

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yes

Threaded tripod connector

A 1/4" thread for connection to a photographic tripod. Most binoculars require an additional tripod adapter.

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yes

Lens cover

yes

eyepiece cap

yes

Lenses with special glass for high colour purity

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inert gas charge

yes

Transport cases

Field of view

Information about the field of view enables binoculars to be more easily compared with one another.

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True field of view (°)

True field of view

The angular field of view visible with the binoculars.

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2,6

Apparent field of view (°)

Close focus limit (m)

Close focus limit

The shortest distance which can still be seen sharply through binoculars.

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General

Series

Very robust large binoculars with magnesium housing for observing the night sky

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Body

Magnesium

Colour

black

Length (mm)

445

Width (mm)

226

Height (mm)

122

Weight (g)

4300

Area of application

The areas of application help you to choose the right binoculars for your purpose.

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Astronomy

You are fascinated by the stars, but don't want to set up telescope right now? You can immerse yourself in the world of astronomy using many binoculars.

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very good

Bird watching

Blackbird, thrush, finch or starling?
Binoculars helps to spot and identify the bird.

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not recommended

Hunting

Do you want to stay in the hide until dusk, or do you prefer to stalk game? We have the right binoculars for you!

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not recommended

Travel and sports

not recommended

Sailing

Even the sailors of old used binoculars to orient themselves on the high seas. In some cases, modern binoculars even offer a built-in compass and a reticle for estimating distances.

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not recommended

Theatre

Whether it's serious opera, a romantic operetta, folk theatre or a musical; with opera glasses or small binoculars, you'll be part of the action.

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not recommended

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