Explore Scientific 18mm 82 degree Argon purged Eyepiece

Product Description

Ideal for low-power, widefield work, this 18mm 82° 2" design is completely waterproof, meaning it will not fog up in moist conditions, is impervious to dew and can even be cleaned and rinsed underwater! The quality construction includes twist up eyecups, finely machined all-metal lens barrels and dead black internal surfaces, minimising light scatter and internal reflections. Explore Scientific 18mm 82° Argon-Purged Waterproof 2" Eyepiece. 6 ED glass element design, offering 13mm Eyerelief, full multicoating, contrast-boosting edge blackening. Explore Scientific have used advanced ray-tracing computer design to produce a range of extremely competitive eyepieces.

18mm Argon purged high performance eyepiece with 82° apparent field

Waterproof, Argon purged and sealed against dust
Very large and sharp 82° field
EMD-fully multi-coated with blackened lens edges
All eyepieces of this series are parfocal

OPTICAL SPECIFICATIONS
Focal length 18 mm
Apparent field of view 82 degrees
Lenses/Groups 6/4

GENERAL TECHNICAL DATA
Waterproof
Eyepiece Barrel Diameter 50.8 mm
Eyecups Rubber eyecups, foldable
Extended warranty 10 years

DIMENSIONS & WEIGHTS
Net weight (without access.) 395 g
Length of the eyepiece barrel 28 mm