Corvane Lark 10x50 binoculars, with parallelogram mount
10x magnification · 50 mm objectives · 5.6° field
$179
Catalog preview. Not available for purchase.
- Package
- With parallelogram mount
- Optics
- Fully multi-coated optics
- Armor
- Black rubber armor
- Edition
- 2023 edition
Specifications
| Magnification | 10x |
|---|---|
| Objective diameter | 50 mm |
| True field of view | 5.6° |
| Exit pupil | 5.0 mm |
| Dawes limit | 2.32 arcsec |
| Limiting magnitude | 10.5 |
| Eye relief | 18 mm |
| Close focus | 5.0 m |
| Prisms | BaK-4 Porro |
| Weather sealing | Not sealed |
| Weight | 980 g |
| Package | With parallelogram mount |
| Optics | Fully multi-coated optics |
| Armor | Black rubber armor |
| Edition | 2023 edition |
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
The Corvane Lark 10x50 binoculars comes in several configurations, and the notes below explain what this particular combination includes. 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. Fully multi-coated optics treat every air-to-glass surface, which raises light transmission and image contrast.
Black rubber armor protects the body from knocks and gives a firm grip when your hands are cold. This is the 2023 edition of the Lark line, the earliest version that is still listed in the catalog. 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.