Explore Scientific LER 20mm 52° 1.25″ eyepiece
Looking for an eyepiece that delivers truly sharp and high-contrast views of the night sky? The Explore Scientific LER 20mm from the 52° series is an excellent choice for anyone who wants to get the most out of their telescope. Thanks to its universal flat-field optical design, it provides exceptionally sharp image quality - a difference that is especially noticeable when observing planets and the Moon.
Key features
Superior optical performance
The patented EMD anti-reflection coating ensures outstanding contrast and effectively suppresses unwanted reflections, keeping your view clean and vivid. The corrected 52° apparent field of view is a significant step up compared to standard Plössl eyepieces, while still offering excellent value for money. The Explore Scientific 52° LER series simply delivers premium comfort and quality at a reasonable price.
Durability and weather resistance
You do not need to worry about durability at all. Argon purging effectively prevents internal fogging and protects the optics from dust, mold and cleaning fluid seepage. The eyepiece is also fully waterproof, making it a reliable companion for observation in any weather conditions - whether you are in your garden, up in the mountains, or anywhere else under the starry sky. Long service life and countless memorable observing sessions are simply guaranteed with this eyepiece.
Technical specifications
| Parameter |
Value |
| Focal length |
20mm |
| Apparent field of view |
52° |
| Barrel diameter |
1.25″ |
| Optical design |
LER (Long Eye Relief), flat-field |
| Anti-reflection coating |
Patented EMD multi-coating |
| Gas purging |
Argon |
| Waterproofing |
Fully waterproof |
Who is this eyepiece for?
- Observers who focus on planetary and lunar viewing and demand crisp, high-contrast images
- Astronomers looking for a reliable upgrade from standard Plössl eyepieces
- Anyone who observes in variable weather conditions and needs a durable, weatherproof eyepiece
- Beginners and experienced observers alike who want premium optics at a sensible price
