Explore Scientific 52° Series 1.25" 10mm Waterproof Eyepiece

Explore Scientific 52° Series 1.25" 10mm Waterproof EyepieceThe 52 Series 10mm occupies a versatile sweet spot between planetary magnification and deep sky brightness, making it one of the most used focal lengths in any eyepiece collection. Waterproof construction and EMD coatings at this price make it an easy choice for a workhorse eyepiece. Key Features Argon purged waterproof housing sealed against moisture, fog, and humidity for all weather reliability Enhanced Multi Layer Deposition (EMD) coatings on all

The 52° Series 10mm occupies a versatile sweet spot between planetary magnification and deep-sky brightness, making it one of the most-used focal lengths in any eyepiece collection. Waterproof construction and EMD coatings at this price make it an easy choice for a workhorse eyepiece.

Key Features

• 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 maximize light throughput and contrast
• 4-element, 2-group optical design with edge-blackened elements to control scattered light
• Fold-down silicone rubber eyecup with comfortable eye relief for extended observing, compatible with eyeglasses
• 1.25" barrel fits standard focusers across refractors, reflectors, and catadioptric telescopes

Ideal For

• All-around observers who want a single eyepiece that handles planets, the Moon, and brighter deep-sky objects well
• Globular cluster and planetary nebula fans where moderate-high magnification reveals structure and detail
• Newcomers building a collection — a 10mm is often the first upgrade from a kit eyepiece and the last one retired