Explore Scientific 82 degree eyepieces are waterproof, with Argon purged interiors that keep your eyepiece clean and clear.  A comfortably wide 82 Degree apparent field of view provides an immersive observing experience that works well on most telescopes without vignetting, superb contrast and edge to edge clarity.  Our eyepieces are rigorously tested and designed to the highest quality standards for enjoyable results that last a lifetime.