Omegon UWA 20mm 66° 1.25″ eyepiece
Looking for an eyepiece that offers a truly immersive view of the night sky without sacrificing comfort during long observing sessions? The Omegon UWA 20mm eyepiece is exactly what you need. The UWA (Ultra Wide Angle) series from Omegon is designed for astronomers who want more than a standard view - they want a wider context, a richer field of view, and the feeling of being truly immersed in the universe.
Wide field of view for immersive observing
A wide-angle eyepiece with a 66° field of view provides a significantly larger image than classic eyepieces, allowing you to observe large objects - open star clusters, extended nebulae or rich star fields - in their full beauty. The 20mm focal length makes it an ideal overview eyepiece for most astronomical telescopes: at medium focal lengths you achieve a comfortable magnification with a sufficiently large and bright field of view.
The optical system features multi-layer coating, which maximises light transmission, suppresses reflections and ensures high contrast and accurate colour rendition - something that more experienced observers will particularly appreciate, knowing how important the quality of optical surfaces really is.
Comfort and practical design
The eyepiece is equipped with a filter thread (standard 1.25″ filter thread), so you can attach a lunar filter, a narrowband nebula filter or any other favourite filter without adapters. The fold-down (adjustable) eye cup ensures comfortable use both with and without glasses - simply fold it to the right position. The 18mm eye relief is an above-standard value, meaning your eye does not have to press tightly against the lens. You can lean back comfortably and observe in a relaxed manner without fatigue, even during extended sessions.
Who is this eyepiece for?
The Omegon UWA 20mm eyepiece is an excellent choice for both beginners looking for their first quality wide-field eyepiece and experienced observers building an eyepiece collection. Thanks to its 1.25″ connection, it is compatible with the vast majority of astronomical telescopes on the market - refractors, reflectors and catadioptric systems alike.
It is particularly well suited for:
- Overview sky tours and scanning wide star fields
- Locating and observing deep-sky objects
- Observing open star clusters in their full extent
- Observing the Moon with fine detail at lower magnification
- Use with filters - the built-in filter thread expands the possibilities further
The Omegon UWA series
Omegon is a brand with a long tradition in the astronomical community, focused on developing optics accessible to a wide range of observers without compromising on build quality. The UWA series is a good example of this: multi-layer coating, an ergonomic fold-down eye cup and a filter thread are not premium extras at Omegon - they are standard features.
The wide range of focal lengths available within the UWA series also allows you to gradually build a complete eyepiece set with well-matched characteristics, so switching between magnifications during an observing session is smooth and consistent.
Technical specifications
| Parameter |
Value |
| Focal length |
20mm |
| Apparent field of view |
66° |
| Eye relief |
18mm |
| Barrel diameter |
1.25″ |
| Filter thread |
1.25″ standard |
| Eye cup |
Fold-down, adjustable |
| Coating |
Multi-layer (multilayer coating) |
| Series |
Omegon UWA (Ultra Wide Angle) |
If you are looking for an eyepiece that handles everyday overview observing with ease, provides comfortable eye relief, is compatible with all standard filters and delivers solid multi-layer coating at a reasonable price - the Omegon UWA 20mm deserves your attention.
