Omegon Plössl 17mm 50° 1.25″ Eyepiece
The four-element Plössl design has been a favourite among amateur astronomers for decades - and for good reason. This straightforward four-lens optical system delivers a bright, high-contrast image without putting a strain on your budget. The Omegon Plössl takes this proven design and refines it to a level that genuinely outperforms the stock eyepieces supplied with most telescopes.
Built to last
The metal body will withstand years of regular use. Anti-reflection coatings on the lenses reduce light loss and preserve the natural brightness of objects in view. A filter thread lets you attach a Moon filter or nebula filter quickly, without any delay during a session.
A wider view - less searching, more observing
Stock eyepieces typically offer a narrow field of view, which forces you to keep moving the telescope just to keep an object in sight. The Omegon Plössl 17mm eyepiece with its 50° field of view solves that problem. Nebulae, star clusters and planets fit fully into the image, so you can focus on observing rather than chasing your target around the field.
Consistent performance across the full field
Omegon Plössl eyepieces maintain good edge definition even when used with fast telescopes at f/5. The lower the f-number, the greater the focal ratio of the telescope - and the more demanding the requirements placed on the eyepiece. f/5 telescopes are among the fastest available, and this eyepiece still delivers consistent results across the entire field of view.
Comfortable for long sessions
The soft rubber eyecup on every Omegon Plössl eyepiece does two things at once. It blocks stray light from the sides and makes long observing sessions noticeably more comfortable. The result is higher contrast and less eye fatigue - which is a real advantage when you are spending hours at the telescope.
Part of a complete eyepiece set
Omegon Plössl eyepieces are available in a wide range of focal lengths, so you can build a well-spaced set of magnifications suited to your telescope and your observing goals. Every eyepiece connects via the standard 1.25″ fitting, which is compatible with the vast majority of modern telescopes.
Your eyepiece shapes your final image
The quality of your eyepiece has a direct effect on the image your telescope produces. Even the finest objective cannot compensate for a weak eyepiece. The Omegon Plössl 17mm respects your investment in your telescope and makes full use of everything the optical tube has to offer.
Technical specifications
| Parameter |
Value |
| Design |
Plössl (4-element) |
| Focal length |
17 mm |
| Field of view |
50° |
| Barrel size |
1.25″ |
| Filter thread |
Yes |
| Eyecup |
Soft rubber, fold-down |
| Body material |
Metal |
| Coating |
Anti-reflection coating |
| Compatible telescope types |
All standard 1.25″ focusers |
Who is this eyepiece for?
Beginners upgrading from stock eyepieces
If your telescope came with a basic eyepiece, the Omegon Plössl 17mm is a straightforward and cost-effective upgrade that will show you noticeably more detail and a wider view.
Observers building an eyepiece collection
The 17 mm focal length sits in the low-to-medium magnification range. It works well for open star clusters, nebulae and wide double stars. Pair it with a shorter focal length Plössl for higher magnification views of planets and the Moon.
Anyone using a fast telescope
If your telescope has a focal ratio of f/5 or faster, choosing the right eyepiece matters more. The Omegon Plössl handles fast focal ratios well and keeps stars sharp to the edges.
Frequently asked questions
Is this eyepiece suitable for beginners?
Yes. The Plössl design is one of the most straightforward and reliable designs available. It is easy to use and gives very good results for the price.
Which telescopes does the 1.25″ fitting work with?
The 1.25″ barrel is the most common standard in amateur astronomy. It fits the focuser on the great majority of entry-level and mid-range telescopes.
Can I use filters with this eyepiece?
Yes. The eyepiece has a standard filter thread, so you can screw on a Moon filter or a nebula filter directly. No additional adapter is required.
What magnification will I get?
Magnification depends on your telescope's focal length. Divide the telescope's focal length in millimetres by 17 to get the magnification. For example, a 1,000 mm focal length telescope gives 59x with this eyepiece.
