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Astronomical, water-resistant. Porro prisms. Magnification: 15x. Lens diameter: 70mm

Porro
Prisms of the binoculars adjust the image orientation projected by the objective
15
The higher the magnification of the binoculars is, the larger the object will be, but the narrower the field of view (FOV) and the darker the image
2.8
The larger the aperture is, the more light there will be that enters the optical tube and the image will be brighter, although a larger aperture will increase the size of the binoculars

Product ID 85535
Brand Levenhuk, Inc., USA
Warranty lifetime
EAN 5905555025087
Package size (LxWxH) 13x9.8x5.9 in
Shipping Weight 4.2 lb
Description

Levenhuk Bruno BASE Binoculars 15x70 are a perfect find for those eager to observe the starry sky and distant terrestrial objects with equal efficiency. During the day, the device allows you to view the surrounding nature in detail. At night, you can immerse yourself in the study of large lunar craters, bright star clusters, and the planets closest to Earth.

This device provides 15x magnification. This is enough to become acquainted with the beauty of space and the observation of wild animals in their natural habitat. Large objective lenses with 70mm diameter provide a bright and crisp image even at twilight and before dawn. The device is based on Porro prisms made of BaK-4 glass that are supplemented with K9/F4 lenses. Multi-coated optical elements provide high light transmission, and the 4.6mm exit pupil keeps the user comfortable while observing in low light. The central focusing wheel with high speed enables quick focusing.

The device body is made of aluminum alloy and it is fully rubberized. It fits securely in your hands, can withstand occasional impacts, and is protected against spraying water according to the IPX3 standard. Diopter adjustment +4D and adjustable interpupillary distance: 56–72mm provide for the precise adjustment of the binoculars according to individual eyesight characteristics.

The binoculars have a large magnification. Therefore, to obtain a stable image, it is recommended to use a tripod or rest it on a hard surface. Handheld observation may cause image shaking. The kit includes an adapter for tripod mounting. The kit also includes eyepiece and objective lens protective caps as well as a pouch, strap, and cleaning wipe.

Key features:

  • Optical system with a 15x magnification for the detailed examination of remote targets
  • Demonstrates bright and crisp image across the entire field of view
  • 70mm powerful objective lenses for efficient operation in low light
  • Fully multi-coated optical surfaces for maximum light transmission
  • Moisture resistant body with IPX3 protection against spraying water for operation in harsh weather conditions
  • Rubber coating of the aluminum body for a secure grip and shock protection
  • Tripod mountable for prolonged observations

The kit includes:

  • Binoculars
  • Eyepiece and objective lens protective caps
  • Strap
  • Pouch
  • Cleaning wipe
  • Metal adapter for a tripod
  • User manual and warranty slip
Specifications
Product ID 85535
Brand Levenhuk, Inc., USA
Warranty lifetime
EAN 5905555025087
Package size (LxWxH) 13x9.8x5.9 in
Shipping Weight 4.2 lb
Prism type Porro
Magnification, x 15
Objective lens diameter (aperture), in 2.8
Optical design 6 elements in 4 groups
Eyepieces 4 elements in 3 groups
Objectives 2 elements in 1 group
Optics material BaK-4
Lens coating fully multi-coated
Prisms coating fully multi-coated
Exit pupil diameter, in 0.2
Eye relief, in 0.6
Twilight factor 32.4
Relative brightness 21.16
Resolution threshold, arcseconds 4
Field of view, ° 4.4
Field of view, ft/1000yds 231
Close focus, ft 49.2
Eyepiece diopter adjustment, diopters ±4
Interpupillary distance, in 2.2 — 2.8
Focusing central
Eyecups fold-down, rubber
Body aluminum alloy, rubberized
Moisture resistance
Degree of moisture/water protection IPX3 (protection against spraying water)
Operating temperature range, °F 14...+127
Adaptable to a tripod standard 1/4" thread, requires an adapter (included in the kit)
Size classic
Application astronomical
Mounting on a tripod
Pouch/case/bag in set pouch
For eyeglass wearers
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