Explore Scientific 82° Series 2" 30mm Waterproof Eyepiece

The 82° Series 30mm is the widest-field eyepiece in the series: a 2" barrel, 30mm focal length, and 82° apparent field combine for sweeping panoramic views. Large nebulae, open clusters, and Milky Way star clouds fill the eyepiece with detail and context. The 7-element design maintains sharpness across the enormous field. It has argon-purged waterproof construction.

Key Features

• 2" barrel with 30mm focal length — maximum sky coverage and brightness in the 82° series
• 82° apparent field of view — the widest true field in the 82° Series for immersive, panoramic deep-sky views
• 7-element optics of low-dispersion, high-index glass: sharp, well-corrected images across the full ultra-wide field
• Argon-purged waterproof housing — sealed against moisture, fog, and temperature extremes for all-season reliability
• Enhanced Multi-Layer Deposition (EMD) coatings on all air-to-glass surfaces with edge-blackened elements
• Fold-down silicone rubber eyecup with generous eye relief for comfortable extended viewing, including with eyeglasses

Ideal For

• Wide-field deep-sky observers who want immersive views: large nebulae, open clusters, and rich star fields at their most expansive
• Panoramic sky sweeping where the combination of brightness, field width, and optical quality creates a genuinely immersive visual experience
• Dobsonian and large-aperture telescope owners seeking a low-power, wide-field eyepiece for their instrument