82° Series Waterproof Telescope Eyepieces

The Explore Scientific 82° Series delivers an ultra-wide 82-degree apparent field of view that pulls you into the eyepiece, creating a 'portal' effect that makes star fields, clusters and nebulae feel expansive and three-dimensional. It is one of the most popular ultra-wide eyepiece lines in amateur astronomy, loved by deep-sky observers and Dobsonian owners alike.

Each 82° eyepiece is waterproof and argon-purged to resist internal fogging and contamination, with fully multi-coated optics for bright, high-contrast images. The series spans short focal lengths for high-power lunar and planetary observing to long focal lengths for sweeping the Milky Way, and long eye relief (LER) versions offer extra comfort for eyeglass wearers. The wide field keeps objects in view longer on manual telescopes, reducing how often you need to nudge your scope. For a dramatic, immersive upgrade over standard eyepieces, the 82° Series is an exceptional choice.

Choosing an 82° eyepiece depends on your telescope's focal length and focuser size. Shorter focal lengths are excellent for high-power views of the Moon and planets, mid-range focal lengths are ideal for galaxies and globular clusters, and the longest focal lengths provide wide views of large nebulae and star fields on telescopes with 2-inch focusers. The 82° Series pairs particularly well with Dobsonian telescopes and Newtonian reflectors, and many observers build their entire eyepiece case around this line for its consistent, immersive views and proven performance.