Premium Flatfield 60° 5.5mm Eyepiece

Omegon Premium Flat Field Eyepieces: Combine a flattened image field with high contrast.

Most eyepieces suffer from image distortion at the edge of the field of view. If you move the object being observed to the outside of the field of view, it becomes distorted. Omegon's premium flat-field eyepieces counteract this effect. Who doesn't want a truly faithful, distortion-free image?

You can get very close to this ideal with flat-field eyepieces. These flat-field eyepieces include an ED lens element that provides particularly good color purity. Their optical construction also means that these eyepieces offer extremely high contrast and sharpness, far above the usual level.

The advantages in a nutshell:

• Flat field optics, providing a flat field of view.
• ED element for high contrast and image color purity
• Wide-angle eyepiece with a 60° to 65° field of view
• Multi-coating on all lens surfaces.
• 16mm eye relief, suitable for eyeglass wearers
  foldable eye cups
• 1.25" barrel with 1.25" filter thread
• Wide field of view

With an apparent field of view of 60° to 65°, these eyepieces belong to the wide-angle eyepiece category. Classic "tunnel vision" eyepieces are increasingly being relegated to the back of the drawer. Compared to the well-known Ploessl eyepieces, premium flat-field eyepieces offer a field of view approximately 20% wider.

The eyepiece body combines up to six lens elements, producing a very high-quality eyepiece. All glass/air surfaces are multi-coated, which prevents unwanted reflections and ensures high brightness and transparency. Therefore, you can expect exceptionally good contrast when observing planets and DSOs through these eyepieces.

Between the eye and the eyepiece
The eye relief of these eyepieces makes them particularly comfortable to use. There are no shadows, even if you don't look directly along the optical axis. These eyepieces are available in focal lengths of 25/19/15.5/10.5 and 5.5 mm. All of these focal lengths have a large eyepiece diameter, which means relaxed viewing is possible even at high magnifications. The 16 mm eye relief means these eyepieces are also suitable for eyeglass wearers, as they generally allow them to view the entire field of view. The eyepieces can be used with most telescopes without any problems. Even in Newtonian telescopes with a fast aperture ratio of f/5, the edge of the field of view remains well defined.