Bresser Plössl PL 5mm 50° 1.25″ eyepiece
Looking for a reliable short focal length eyepiece that lets you reach high magnification while maintaining a sharp, high-contrast image? The Bresser Plössl PL 5mm eyepiece with a 1.25″ (31.7 mm) barrel diameter and 50° apparent field of view is exactly what you need. Whether you are pointing your telescope at the Moon, planets or close double stars, this eyepiece will do its job reliably and without unnecessary compromise.
Proven Plössl design
The Plössl design has been popular among astronomers for decades, and for good reason. Four optical elements arranged in two groups provide significantly better correction of aberrations and sharpness across the entire field of view compared to older designs such as Kellner or Huygens. This is especially appreciated by owners of entry-level and intermediate telescopes, where a quality eyepiece can greatly improve the overall observing experience. The 50° apparent field of view offers a reasonably comfortable view even at the high magnification that a 5mm focal length naturally produces.
Fully multi-coated optics for maximum contrast
Fully multi-coated anti-reflection coatings (FMC) are applied to all air-to-glass surfaces. This minimises light loss caused by reflections and suppresses unwanted scatter that reduces image contrast. When observing planets or the Moon, high contrast is key - the difference compared to uncoated or single-coated optics is immediately noticeable.
Durable construction and practical features
The eyepiece body is made of metal with a chrome finish, ensuring mechanical durability and long service life. The inner walls of the barrel are textured and matte to eliminate stray reflections inside the eyepiece. A fold-down rubber eyecup protects against stray light that would disturb observation, and is comfortable when placing your eye against it - you will appreciate this especially during longer observing sessions.
An important practical detail is the internal filter thread for 1.25″ filters, so the eyepiece can easily be combined with a lunar filter or filters for visual observation of emission nebulae.
Who is this eyepiece for?
The Bresser Plössl PL 5mm is an excellent choice for:
- Beginning astronomers who want to upgrade their first telescope beyond the basic supplied eyepieces
- More experienced observers looking for an affordable yet optically honest high-magnification tool
- Detailed mapping of the lunar surface
- Tracking the phases of Venus and other planetary observation
- Splitting close double stars
Technical specifications
| Parameter |
Value |
| Focal length |
5 mm |
| Barrel diameter |
1.25″ (31.7 mm) |
| Apparent field of view |
50° |
| Optical design |
Plössl (4 elements in 2 groups) |
| Coatings |
FMC - fully multi-coated |
| Filter thread |
1.25″ (standard) |
| Eyecup |
Fold-down rubber |
| Body material |
Metal with chrome finish |
| Weight |
52 g |
At just 52 g, the eyepiece places minimal load on the focuser, making it suitable even for more sensitive telescope mounts.
