Northmere

Northmere Fjord 10x40 ED binoculars

10x magnification · 40 mm objectives · 6.2° field

$1,239

Catalog preview. Not available for purchase.

Package
Binoculars only
Optics
Fully multi-coated optics
Armor
Olive rubber armor
Edition
2024 edition

Specifications

Magnification10x
Objective diameter40 mm
True field of view6.2°
Exit pupil4.0 mm
Dawes limit2.90 arcsec
Limiting magnitude10.0
Eye relief16 mm
Close focus2.0 m
PrismsBaK-4 roof prisms with phase correction and extra-low-dispersion objectives
Weather sealingNitrogen-purged, waterproof to IPX7
Weight690 g
PackageBinoculars only
OpticsFully multi-coated optics
ArmorOlive rubber armor
Edition2024 edition

Description

The Fjord 10x40 ED binoculars pair 40 mm objectives with 10x magnification, giving an exit pupil of 4 mm. This size suits most observers under suburban and rural skies and keeps the image bright enough for open clusters, bright nebulae, and the brighter Messier objects. The true field of 6.2 degrees gives an apparent field of 62 degrees, so a broad section of the Milky Way in Cygnus or Aquila fits in one view. Compared with 7x50 models, the 10x40 shows more detail on the Moon and on the Pleiades, though the narrower field means you will sweep more slowly across star fields.

The extra-low-dispersion objectives reduce color fringing around bright stars and along the lunar limb, which helps when you examine double stars such as Albireo and Mizar. The BaK-4 roof prisms are phase-corrected and multi-coated on all air-glass surfaces, so the image stays sharp toward the edge of the field. An eye relief of 16 mm lets you keep your glasses on while you see most of the field, and the twist-up eyecups lock in two positions.

At 690 g, the binoculars are comfortable for hand-held sessions of an hour or more. For longer sessions, rest your elbows on a wall or a car roof, or fit the binoculars to a parallelogram mount. The close focus of 2.0 meters lets you examine nearby objects, and the central focus wheel and right-eye diopter adjust smoothly. The nitrogen-purged housing resists internal fogging when the air cools after dusk, so you can keep observing through damp, dew-forming hours. Replace the rain guard caps when you transport the binoculars, and clean the objective lenses only with the supplied cloth.

About this configuration

All configurations of the Northmere Fjord 10x40 ED binoculars share the same magnification and objective size; the options below change the package and finish. This package contains the binoculars with their strap, lens caps, and case, without any mounting hardware. Binoculars alone suit hand-held scanning of the Milky Way, bright star clusters, and the phases of the Moon. Fully multi-coated optics treat every air-to-glass surface, which raises light transmission and image contrast.

The olive armor has the same grip pattern and thickness as the other colors in the Fjord line. The optics in the 2024 edition match the other years; the changes concern handling details only. Before you add a mount or adapter later, check the compatibility notes for the thread and fitting that this binocular uses.

What's in the box

  • Binoculars with neck strap
  • Objective and eyepiece rain guard caps
  • Soft carrying case
  • Lens cleaning cloth

Compatibility notes

  • The central tripod socket takes a standard L-shaped binocular adapter with a 1/4-20 thread.
  • Fits Northmere parallelogram binocular mounts and harnesses rated for 1 kg binoculars.