EXPLORE SCIENTIFIC 68° Ar Eyepiece 40 mm (2″)

EXPLORE SCIENTIFIC 68° Ar Eyepiece 40 mm (2″)

Description

The Explore Scientific 68° Ar 40 mm eyepiece provides a sweeping 68° apparent field, delivering high contrast and sharpness across the entire view. Filled with argon gas—a heavier, more inert element than nitrogen—it offers superior sealing against dust, moisture, and rapid temperature changes. Precision-crafted with fully multi-coated EMD lenses and edge-blackened elements, it minimizes internal reflections. With its foldable rubber eyecup and generous 31 mm eye relief, this eyepiece is comfortable for glasses wearers and prolonged use.

Technical specifications

• Focal length: 40 mm

• Apparent field: 68°

• Eye relief: 31 mm

• Barrel: 2″ (50.8 mm)

• Optical design: 6 elements in 4 groups

• Coatings: fully multi-coated EMD, blackened edges

• Waterproof: argon-purged, water-tested to 1 m for 30 min

• Barrel length: ~31 mm (total length ~114 mm)

• Net weight: ~1,020 g

• Eyecup: foldable rubber

• Parfocal with other 68° eyepieces

• Filter threads: 2″

Additional information

Comes with foldable eyecup, dust caps, and waterproofing. Manufacturer’s 1-year warranty, extendable to lifetime upon registration.