52° Series 30mm Waterproof Eyepiece

The Explore Scientific 30mm 52° Series eyepiece offers an exceptional balance of wide-field views, premium optical coatings, and a rugged waterproof design, making it an outstanding choice for both beginner and advanced astronomers. With a well-corrected 52-degree apparent field of view and excellent eye relief, this eyepiece is perfect for deep-sky exploration, giving you bright, sharp images of nebulae, galaxies, and star clusters while maintaining comfort for long observing sessions. Unlike conventional nitrogen-purged eyepieces, the Explore Scientific 30mm 52° Series is argon-purged and O-ring sealed, making it completely waterproof and resistant to internal fogging. The advanced optical design features multiple lens elements that have been fully multi-coated, ensuring maximum light transmission while reducing reflections, internal scatter, and ghost images. Additionally, the internal lens edges are blackened to suppress stray light, enhancing contrast and improving visibility of faint deep-sky objects.