Explore Scientific 82? AR Eyepiece with High-Quality EMD coating Waterproof with Protective Gas Filled

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

The visual effect of these eyepieces with their long eye-relief and their 82° apparent field is truly a full-immersion experience. Your eye is relaxed, allowing you to easily use the "averted vision" technique to study faint details across a huge field-of-view. The 82° Series eyepieces come with a twist-up rubber eye-guard that raise to the desired height for the comfort of the observer, and as experienced astronomers know, eye comfort is critical when trying to observe at the visual limits of the telescope. To keep internal reflections to a minimum, all internal surfaces of the eyepiece barrel are flat black, as well as the edges of the lenses themselves to minimize the scattering of light within the lenses themselves.