Explore Scientific LER 3mm 52° 1.25″ eyepiece
Looking for an eyepiece that delivers a truly sharp and high-contrast image when observing planets or the Moon? The Explore Scientific LER 3mm from the 52° series is exactly what you need. This eyepiece is designed as a flat-field eyepiece for planetary observation and combines advanced optical technology with a robust, durable construction - a reliable partner for many years of safe observing.
Advanced optics with EMD coating
At the heart of this eyepiece is the patented EMD (Enhanced Multi-layer Deposition) anti-reflection coating, which delivers exceptionally high contrast and effectively suppresses unwanted reflections and stray light. The result is a sharp, bright image with faithful detail rendition even at high magnifications.
The corrected 52° field of view is significantly wider than that of classical Plössl eyepieces, while optical correction is maintained all the way to the edges of the field - no distortion, no blurring at the edges. For technically oriented astronomers: the flat optical design of the LER (Long Eye Relief) series also guarantees a comfortable eye relief distance, which is especially appreciated by observers who wear glasses.
Waterproof and argon-filled construction
The argon fill inside the eyepiece effectively prevents internal fogging, condensation and fungal growth on optical surfaces. The waterproof construction additionally protects against the ingress of cleaning fluids and environmental moisture. This means the eyepiece will safely handle observing sessions on cold nights, in fog and in demanding field conditions. You don't need to worry about accidental contact with dew - the optics will remain in perfect condition.
Ideal for high-magnification planetary work
With a focal length of 3mm, this eyepiece is the ideal choice for high magnification when studying the surface of the Moon in detail, observing planets in the solar system or splitting close double stars. The Explore Scientific 52° LER series represents an outstanding price-to-performance ratio in the premium eyepiece category - you get truly professional optics without having to pay several times more for comparable quality. If you are looking for a reliable eyepiece that will not disappoint you even after years of regular use, the LER 52° series is the right choice.
Key features
- Focal length: 3mm
- Apparent field of view: 52°
- Barrel diameter: 1.25″
- Optical coating: patented EMD (Enhanced Multi-layer Deposition) anti-reflection coating
- Long eye relief (LER) - comfortable for eyeglass wearers
- Argon-filled interior - prevents fogging, condensation and fungal growth
- Waterproof construction
- Flat-field optical design with edge-to-edge correction
- Suitable for planetary observation, lunar surface study and double star splitting
Technical specifications
| Parameter |
Value |
| Focal length |
3mm |
| Apparent field of view |
52° |
| Barrel diameter |
1.25″ |
| Optical coating |
EMD multi-layer anti-reflection |
| Eye relief |
Long eye relief (LER) |
| Internal fill |
Argon |
| Construction |
Waterproof |
