Omegon UWA 9mm 66° 1.25″ eyepiece
Looking for an eyepiece that offers a truly immersive view of star clusters, nebulae and planetary surfaces? The Omegon UWA 9mm from the Ultra Wide Angle series is exactly what you need. With an apparent field of view of 66°, looking through this eyepiece feels like actually flying through space - no cramped keyhole-style view, but a spacious, comfortable field of view with the confidence that nothing important is slipping past the edges.
Magnification and optical performance
The 9mm focal length makes this eyepiece well suited for medium to high magnification work, with the exact value depending on the focal length of your telescope. For reference: paired with a refractor at 900mm focal length you get 100×, and with a Newtonian at 1200mm you get 133×. This is an ideal range for detailed observation of planetary nebulae, globular star clusters or the lunar surface.
Multi-coated optics effectively suppress unwanted reflections and increase light transmission, resulting in a contrast-rich, bright and true-to-life image - even when observing faint deep-sky objects.
Eye relief and comfort
The 15mm eye relief is a very comfortable value for an eyepiece at this focal length. Eyeglass wearers and other observers alike will appreciate not having to press their eye tight against the lens - a natural viewing distance is all it takes to keep the entire field of view visible without dark edges (vignetting). The folding eyecup allows easy adjustment of eye position, whether you observe with or without glasses.
Compatibility and filter thread
The standard 1.25″ barrel diameter ensures compatibility with the vast majority of telescopes on the market - from compact refractors to Newtonian reflectors and Schmidt-Cassegrain systems. A filter thread is included as standard: simply screw a Moon, UHC, O-III or CLS filter directly onto the eyepiece without any additional adapters.
Optically, the UWA (Ultra Wide Angle) design combines multiple lens elements to achieve a wide field of view while maintaining sharpness all the way to the edge of the image.
Who is this eyepiece for?
The Omegon UWA 9mm is an excellent choice for:
- Beginners looking for their first quality wide-angle eyepiece
- Experienced observers who want to add a reliable medium-power eyepiece to their collection for everyday use
- Anyone who regularly observes open and globular star clusters, planetary nebulae or planets during moments of good seeing
The filter thread makes it a versatile tool for a full night under the stars.
Technical specifications
| Parameter |
Value |
| Focal length |
9mm |
| Apparent field of view |
66° |
| Eye relief |
15mm |
| Barrel diameter |
1.25″ |
| Optical design |
UWA (Ultra Wide Angle) |
| Coating |
Multi-coating (fully multi-coated) |
| Filter thread |
Yes, standard 1.25″ |
| Eyecup |
Folding rubber eyecup |
Summary
If you are looking for a quality UWA eyepiece for a 1.25″ telescope that delivers a comfortable view, solid optics and practical features at a reasonable price, the Omegon UWA 9mm is a choice you will not regret. Simply slide it in, put your eye to the lens - and the universe opens up in all its beauty.
