Explore Scientific 82° Series 1.25" 11mm Waterproof Eyepiece
Explore Scientific 82° Series 1.25" 11mm Waterproof Eyepiece is backordered and will ship as soon as it is back in stock.
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The 82° Series 11mm is a versatile high-power eyepiece with ultra-wide-field views that performs brilliantly on planets, the Moon, and brighter deep-sky objects alike. The 7-element lanthanum glass design delivers sharp, well-corrected images across the full 82° field — performance the community regularly compares to Tele Vue Naglers at roughly one-third the price. Waterproof and EMD-coated at $139.
Key Features
- 82° apparent field of view — immersive, ultra-wide views for effortless object tracking and a "spacewalk" observing experience
- 7-element lanthanum glass optics — sharp, color-corrected images with strong edge performance even in fast telescopes
- Argon-purged waterproof housing — sealed against moisture, fog, and humidity for all-weather reliability
- Enhanced Multi-Layer Deposition (EMD) coatings on all air-to-glass surfaces with edge-blackened elements
- Fold-down silicone rubber eyecup for comfortable eye relief during extended sessions
- 1.25" barrel fits standard focusers across all telescope types
Ideal For
- All-around observers who want a single high-power eyepiece that handles planets, the Moon, and bright deep-sky objects with an ultra-wide field
- Observers seeking Nagler-class performance at a fraction of the cost — the 82° series has earned a strong reputation for punching above its weight
- Fast-telescope owners (f/5 and below) where the 82° series' optical correction handles challenging focal ratios well
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Questions & Answers
Have a Question?
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Does it work well with a 6 in telescope?
The Explore Scientific 82° Series 11mm Eyepiece is compatible with most 6-inch telescopes, as they typically use a standard 1.25" focuser. If your telescope has a dual-size (1.25"/2") focuser, it will also work seamlessly. This eyepiece offers medium-to-high magnification, sharp views of planets, the Moon, and deep-sky objects, and a wide 82° field of view for immersive stargazing. Its fully multi-coated optics and long eye relief ensure bright, comfortable viewing.
