Northmere Glacier 7x50 binoculars
7x magnification · 50 mm objectives · 7.5° field
$1,559
Catalog preview. Not available for purchase.
- Package
- Binoculars only
- Optics
- ED glass, fully multi-coated
- Armor
- Slate gray armor
- Edition
- 2023 edition
Specifications
| Magnification | 7x |
|---|---|
| Objective diameter | 50 mm |
| True field of view | 7.5° |
| Exit pupil | 7.1 mm |
| Dawes limit | 2.32 arcsec |
| Limiting magnitude | 10.5 |
| Eye relief | 17 mm |
| Close focus | 2.5 m |
| Prisms | High-index roof prisms |
| Weather sealing | Nitrogen-purged, O-ring sealed, waterproof to 2 m |
| Weight | 1,040 g |
| Package | Binoculars only |
| Optics | ED glass, fully multi-coated |
| Armor | Slate gray armor |
| Edition | 2023 edition |
Description
The Glacier 7x50 binoculars combine 7x magnification with 50 mm objectives, giving an exit pupil of about 7.1 mm. That pupil size suits a fully dark-adapted eye under a moonless sky, where the view shows faint stars and wide star fields. With a true field of 7.5 degrees, the apparent field of 52.5 degrees lets you take in whole constellations at once, such as the star clouds of Sagittarius and the length of the Milky Way through Cygnus.
The 7x50 is designed for steady hand-held use. At 1,040 g, it is heavier than a compact model, so rest your elbows against your chest or a fence post for longer sessions. Targets such as the Pleiades, the Double Cluster in Perseus, and the Orion Nebula fill the view with room around them. The central focus wheel and right-eye diopter adjust smoothly, and the 17 mm eye relief lets you keep eyeglasses on and still see the full field.
Heavy-duty construction matters when the binoculars spend a night on a tripod or on a car roof in damp air. The housing is nitrogen-purged and O-ring sealed, and it is rated waterproof to 2 m, so dew and light rain do not fog the internal optics. The roof prisms use high-index glass with phase-correction coating, which keeps star images round near the edge of the field. The ED glass element reduces the color fringing that appears on bright stars such as Vega and Capella.
Older observers may have a maximum pupil of 5 mm or less, so part of the 7 mm exit pupil goes unused. In that case, a higher-power model gives a darker sky at similar star brightness, while this 7x50 keeps the larger field for sweeping. Start a first session on the Milky Way in Cygnus, then sweep toward Cassiopeia and note which clusters stand out.
About this configuration
The Northmere Glacier 7x50 binoculars comes in several configurations, and the notes below explain what this particular combination includes. This package contains the binoculars with their strap, lens caps, and case, without any mounting hardware. If you later want steadier views, the tripod socket between the barrels accepts a standard L-shaped adapter. The ED version adds low-dispersion glass and full multi-coating for sharper star images toward the edge of the field.
The slate gray finish makes the binoculars easier to find on a dark table than the black armor does. This is the 2023 edition of the Glacier line, the earliest version that is still listed in the catalog. The magnification, field, and exit pupil figures in the specifications table apply to every configuration of the Glacier line.
What's in the box
- Binoculars with neck strap
- Objective and eyepiece caps
- Padded carrying case
- Cleaning cloth
Compatibility notes
- Accepts a standard L-shaped binocular adapter with a 1/4-20 tripod socket.
- Fits parallelogram mounts and binocular harnesses rated for 1.5 kg payloads.