Explore Scientific Eyepiece 82° Ar 18mm 2"

Introducing the 18mm waterproof ocular featuring an 82° apparent field of view.

Crafted with advanced computer design and a blend of low dispersion and high refractive index optical glasses, Explore Scientific's 82° Series extreme wide-field eyepieces are meticulously engineered for superior contrast, resolution, and a flat field.

Experience full immersion with the long eye relief and expansive 82° apparent field, allowing relaxed viewing and effortless utilization of the "averted vision" technique for scrutinizing faint details across vast fields of view.

Each eyepiece is assembled with precision into machined metal lens barrels to maintain perfect alignment for years of rugged field use. Equipped with a fold-up rubber eye-guard for customizable comfort, these eyepieces prioritize eye comfort during extensive observation sessions.

To minimize internal reflections, all internal surfaces of the eyepiece barrel and lens edges are coated in flat black, reducing light scattering and enhancing clarity.

Outdoor protection is ensured with argon-purged and waterproof construction, safeguarding internal elements from fogging and contaminants. This waterproof design facilitates easier cleaning without the risk of cleaning solution seepage between lens elements.

SPECIFICATIONS

Focal length (mm): 18

Connection (to the telescope): 2"

Apparent field of view (°): 82

Eye relief (mm): 13

Coating of optical system: EMD multi-coating

Number of lenses: 6

Number of groups: 4

Special features: Homofocal, Filter thread

General

Length (mm): 82

Diameter (mm): 55

Weight (g): 405

Series: 82°

Type: Eyepiece

Build: UWA