Explore Scientific LER 20 mm 1.25" EMD AR Eyepiece

The Explore Scientific LER 20 mm 1.25" EMD AR Eyepiece is a high‑performance telescope accessory designed for comfortable and detailed celestial observation. Featuring long eye relief (LER) and anti‑reflection (AR) coatings, this eyepiece delivers bright, sharp views with excellent contrast — perfect for extended observing sessions of the Moon, planets, star clusters, and brighter deep‑sky objects. Its ergonomic design enhances comfort, especially for eyeglass wearers.

Features

• 20 mm focal length: Provides moderate magnification suited for a range of celestial targets.
• 1.25" barrel: Standard diameter compatible with most telescopes and adapters.
• Long eye relief (LER): Extended eye relief makes viewing more comfortable, even with eyeglasses.
• Anti‑reflection (AR) coatings: Multi‑layer coatings improve light transmission and contrast for clearer, brighter images.
• Ergonomic design: Comfortable eyecup and smooth focus interface for enjoyable observing sessions.

Benefits

• Balanced magnification ideal for lunar features, planetary details, and star clusters.
• Long eye relief enhances comfort during extended viewing sessions.
• Anti‑reflection coatings reduce glare and boost contrast for clearer views.
• Standard 1.25" size ensures broad compatibility with telescopes and accessories.
• Comfortable design supports relaxed, fatigue‑free observation.

Package Contents: Explore Scientific LER 20 mm 1.25" EMD AR eyepiece with protective caps and user instructions.

Technical Specifications

• Focal length: 20 mm
• Barrel diameter: 1.25"
• Eye relief: Long eye relief for comfortable viewing
• Optical coatings: Anti‑reflection (AR) multi‑coated lenses
• Usage: Celestial and deep‑sky observation

Ideal For

• Astronomy enthusiasts seeking comfortable extended viewing
• Lunar and planetary observation
• Star cluster and bright deep‑sky object viewing
• Observers who wear eyeglasses
• General telescope accessory enhancement

Keywords

Explore Scientific LER 20 mm 1.25" EMD AR eyepiece, long eye relief eyepiece, astronomy eyepiece, anti‑reflection optics, 20 mm telescope eyepiece, comfortable viewing.