Omegon's 20mm eyepiece is a classic eyepiece with modern finishes: light, robust and bright. Thanks to its 4-lens design, it offers a remarkably sharp and high-contrast image - ideal for wide-angle observation of the moon, star fields and nebulae. With a 50° field of view, you'll see many objects fully in focus without constant adjustment.
Compared to inexpensive standard eyepieces, this Plössl series delivers significant quality gains. The multi-coating and metal housing provide a bright, durable viewing experience. The rubber eyecup prevents stray light from the side and increases contrast.
The 20 mm focal length is particularly suitable for:
✓ imaging larger open star clusters such as the Pleiades
✓ Moon observations with nice image frame and natural contrast
✓ quiet overview when finding and centering deep-sky objects
✓ an ideal intermediate magnification for telescopes of 500-1000 mm focal length
The folding eyecup makes the eyepiece comfortable for everyone, including eyeglass wearers. Thanks to the 1.25″ mount, it fits virtually any modern telescope.
Key benefits
- Classic Plössl design with 4 elements
- 50° field of view - wide enough for many deep-sky objects
- Multi-coating on all glass-air surfaces
- Sharpness to the edge, even at fast telescopes (f/5)
- Compact, lightweight and with rubber eyecup against stray light
- 1.25″ filter thread included
Observation goals
The 20 mm Plössl is ideal as a mid-range wide-field eyepiece for your magnifications. It offers comfort, clarity and reliability - perfect for beginners looking to expand their first eyepiece set without sacrificing quality.
Technical specifications
| Feature | Value |
|---|---|
| Focal length | 20 mm |
| Connection | 1.25″ (31.75 mm) |
| Field of view | 50° |
| Lenses/groups | 4 lenses in 2 groups |
| Eye relief | n.b. (suitable for eyeglass wearers) |
| Coating | Multiple coating |
| Eyecup | Foldable rubber |
| Filter thread | Yes (1.25″) |
| Type of eyepiece | Plössl eyepiece |







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