Explore Scientific 52° Series 1.25" 30mm Waterproof Eyepiece

Explore Scientific 52° Series 1.25" 30mm Waterproof EyepieceThe 52 Series 30mm reaches the maximum practical focal length for a 1. 25" barrel, delivering wide, bright views of extended deep sky objects before stepping up to 2" eyepieces. At $69 with argon purged waterproof construction and EMD coatings, it maximizes your 1. 25" focuser's potential. Key Features Argon purged waterproof housing sealed against moisture, fog, and temperature changes for all season reliability Enhanced Multi Layer Deposition (EMD)

The 52° Series 30mm reaches the maximum practical focal length for a 1.25" barrel, delivering wide, bright views of extended deep-sky objects before stepping up to 2" eyepieces. At $69 with argon-purged waterproof construction and EMD coatings, it maximizes your 1.25" focuser's potential.

Key Features

• Argon-purged waterproof housing — sealed against moisture, fog, and temperature changes for all-season reliability
• Enhanced Multi-Layer Deposition (EMD) coatings on all air-to-glass surfaces for maximum brightness at low magnification
• 4-element, 2-group optical design with edge-blackened elements to control internal reflections
• Fold-down silicone rubber eyecup with comfortable eye relief for relaxed viewing, including with eyeglasses
• 1.25" barrel — delivers wide fields without requiring a 2" focuser

Ideal For

• Deep-sky observers who want the widest possible view through a 1.25" focuser for large nebulae, open clusters, and rich star fields
• Telescope owners without 2" focusers who still want low-power, wide-field capability
• Complementing a high-power eyepiece — pair it with a short-focal-length eyepiece from the same series for a complete two-eyepiece kit