Corvane Lark 10x50 binoculars, with parallelogram mount

Specifications

Description

The Lark 10x50 is a Porro-prism binocular with 50 mm objectives and 10x magnification. It is one of the most common binocular formats for astronomy, because it balances magnification, field of view, and weight in a way that suits most observers.

The 5 mm exit pupil works well for observers of any age and under suburban skies, where a larger exit pupil would mostly brighten the background. At 10x, the Moon shows its larger craters and maria clearly, Jupiter shows up to four moons in a line, and many open clusters resolve into individual stars.

With a 5.6-degree true field, the Lark 10x50 frames objects such as the Double Cluster, the Beehive Cluster, and the region around the Orion Nebula. Many Messier objects are within reach under dark skies, including the brighter globular clusters and galaxies such as M81 and M82, which appear as small, faint patches.

The higher magnification makes hand shake more visible than in a 7x binocular. Bracing your elbows or using a tripod adapter steadies the view and shows noticeably fainter stars. The tripod socket between the barrels takes a standard L-shaped adapter.

The BaK-4 prisms produce round exit pupils, and the main optical surfaces are multi-coated to reduce reflections. At 980 g, the Lark 10x50 is light enough for travel and for daytime use. The central focus wheel moves both sides together, while a diopter ring on the right eyepiece corrects for differences between your eyes.

To get the most from the Lark 10x50, let your eyes adapt to the dark for at least 20 minutes and avoid white light. A red flashlight and a printed star chart are enough to find dozens of clusters and nebulae in a season.

About this configuration

This listing covers one configuration of the Corvane Lark 10x50 binoculars, defined by its package, optical coatings, armor color, and edition year. The parallelogram mount keeps the binoculars at eye level while you move them across the sky in smooth arcs. A parallelogram mount lets observers of different heights share the same view without aiming the binoculars again. The ED version adds low-dispersion glass and full multi-coating for sharper star images toward the edge of the field.

The olive armor has the same grip pattern and thickness as the other colors in the Lark line. This is the 2024 edition, which revised the focus wheel and the strap attachment points of the Lark line. Compare the exit pupil in the specifications with your sky conditions and your age, since both affect how bright the view looks.

What's in the box

• Binoculars with neck strap
• Objective and rain guard caps
• Soft carrying case
• Lens cleaning cloth
• Parallelogram mount with counterweight
• Tripod adapter

Compatibility notes

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