Explore Scientific 52° Series 1.25" 15mm Waterproof Eyepiece

Explore Scientific 52° Series 1.25" 15mm Waterproof EyepieceThe 52 Series 15mm delivers comfortable medium power views ideal for both deep sky detail and casual planetary observation. With argon purged waterproof construction and EMD coated optics, it offers durability and image quality that punch well above its price. Key Features Argon purged waterproof housing sealed and fog proof for confident observing in any conditions Enhanced Multi Layer Deposition (EMD) coatings on all air to glass surfaces for

The 52° Series 15mm delivers comfortable medium-power views ideal for both deep-sky detail and casual planetary observation. With argon-purged waterproof construction and EMD-coated optics, it offers durability and image quality that punch well above its price.

Key Features

• Argon-purged waterproof housing — sealed and fog-proof for confident observing in any conditions
• Enhanced Multi-Layer Deposition (EMD) coatings on all air-to-glass surfaces for bright, clear images
• 4-element, 2-group optical design with edge-blackened elements to reduce stray light
• Fold-down silicone rubber eyecup for relaxed eye relief during extended sessions, including with eyeglasses
• 1.25" barrel compatible with standard focusers on all telescope types

Ideal For

• Deep-sky observers who want enough magnification to resolve detail in globular clusters, planetary nebulae, and smaller galaxies
• General-purpose viewing — a reliable medium-power option for star parties, outreach events, or quick observing sessions
• Observers with fast telescopes (f/4–f/5) seeking a moderate-power eyepiece that avoids over-magnifying