Explore Scientific 52° Series 1.25" 6.5mm Waterproof Eyepiece

Explore Scientific 52° Series 1.25" 6.5mm Waterproof EyepieceThe 52 Series 6. 5mm provides sharp, high power views that remain usable across a wider range of atmospheric conditions than shorter focal lengths. Argon purged waterproof construction and EMD coatings deliver performance well above its price class. Key Features Argon purged waterproof housing sealed against moisture and fog for dependable all weather observing Enhanced Multi Layer Deposition (EMD) coatings on all air to glass surfaces for bright,

The 52° Series 6.5mm provides sharp, high-power views that remain usable across a wider range of atmospheric conditions than shorter focal lengths. Argon-purged waterproof construction and EMD coatings deliver performance well above its price class.

Key Features

• Argon-purged waterproof housing — sealed against moisture and fog for dependable all-weather observing
• Enhanced Multi-Layer Deposition (EMD) coatings on all air-to-glass surfaces for bright, high-contrast images
• 4-element, 2-group optical design with edge-blackened elements to minimize stray light
• Fold-down silicone rubber eyecup for comfortable eye relief during long sessions, including for eyeglass wearers
• 1.25" barrel fits standard focusers on all common telescope designs

Ideal For

• Planetary observers who want crisp detail on Jupiter, Saturn, and Mars without requiring perfectly steady skies
• Lunar explorers studying craters, mountain ranges, and terminator detail at high magnification
• Visual astronomers working with faster telescopes (f/5–f/6) where a 6.5mm provides high power without excessive magnification