100° Series 9mm Waterproof Eyepiece

The Explore Scientific 100° Series 9mm Waterproof Eyepiece is a hyper-wide ultra-wide field ocular delivering an immersive observational experience with near-maximum 100° apparent field of view. Featuring argon-purged, sealed construction with Enhanced Multilayer Deposition coatings and edge-blackened optics, this 2-inch eyepiece resists fogging and moisture while maintaining exceptional contrast and image sharpness across the full field. With comfortable 12.5mm eye relief and multi-coated optics optimized with low-dispersion, high-refractive index optical glass, it excels for both deep-sky and planetary observation, particularly on fast focal ratio telescopes.