Weatherproof 11mm Eyepiece with an optical field phenomenon of 82°.

These ultra-wide field eyepieces from the Explore Scientific 82° series are optimized to produce high contrast, high resolution, and superior flat-field characteristics, using advanced computer-designed optical elements and low-dispersion optical glass.

Features:

• Large eye relief for comfortable viewing.
• Collapsible rubber eyeguard.
• Flat black internal surfaces to minimize reflections.
• Constructed from waterproof material with an argon-filled interior for protection against external contaminants.

The sealed, dry environment protects against internal fogging and mold, keeping the internal components of the eyepiece in optimal condition.