Omegon SWA 15mm 70° eyepiece 1.25″
If you are looking for an eyepiece that delivers a truly immersive experience of observing the night sky, you have come to the right place. The Omegon SWA 15mm eyepiece with a 70° apparent field of view belongs to the popular super wide-angle series, designed to literally draw you into the universe. The feeling of looking freely into deep space without distracting field edges - that is exactly what this series offers. And not just on paper, but in practice, during every trip under the starry sky.
Optics and coatings
Inside this eyepiece you will find five optical elements arranged in three or four groups (depending on the focal length of the model). This design ensures excellent correction of aberrations and natural reproduction of details across the entire field of view. All lenses feature a new broadband FMC coating (fully multi-coated), which significantly increases light transmission and minimizes losses caused by reflections. In addition, the lens edges are blackened, which eliminates unwanted internal reflections and stray light - the result is a highly contrasty, clean image that will be especially appreciated by observers of nebulae, galaxies and star clusters.
Mechanical design and comfort
The new version of the SWA series also brings improvements in mechanical construction. The eyepiece body is protected by a rubber layer that provides a secure grip even on cold nights and at the same time protects the optics in case of accidental drops. The eye cup has been redesigned to be more comfortable for long observing sessions - whether you observe with or without glasses. The 70° field of view significantly reduces the need to constantly shift your gaze across the field, which is a considerable advantage when viewing extended deep-sky objects.
Parfocal series - no refocusing needed
The Omegon SWA series is parfocal - this means that when switching between eyepieces of the same series (for example from 10mm to 15mm or 20mm) you will not need to refocus your telescope. For active observers who switch between different magnifications during a single evening, this feature is practically invaluable. The 1.25″ eyepieces are available in focal lengths of 10mm, 15mm and 20mm, so you can easily build a complete set for various magnification needs.
Available focal lengths in the SWA 1.25″ series
| Focal length |
Apparent field of view |
Barrel size |
| 10 mm |
70° |
1.25″ |
| 15 mm |
70° |
1.25″ |
| 20 mm |
70° |
1.25″ |
Key features at a glance
- 70° apparent field of view for an immersive observing experience
- 5 optical elements in 3-4 groups for excellent aberration correction
- Fully multi-coated (FMC) broadband coatings for maximum light transmission
- Blackened lens edges to eliminate stray light and internal reflections
- Rubber-armored body for secure grip and protection
- Redesigned eye cup suitable for observers with and without glasses
- Parfocal with other eyepieces in the Omegon SWA series
- Standard 1.25″ barrel - compatible with most telescopes
Who is this eyepiece for?
The Omegon SWA 15mm eyepiece is an ideal choice for deep-sky observers who want to get the most out of every observing session. The combination of a wide field of view, quality optics and the practical parfocal design makes it a reliable companion for both beginner enthusiasts and experienced astronomers looking for a powerful and affordable eyepiece.
