Omegon LE Planetary 6mm 55° 1.25″ eyepiece
Looking for an eyepiece that reveals the surface of the Moon and planets in surprisingly sharp detail without breaking the bank? The Omegon LE Planetary 6mm eyepiece is exactly that. It combines carefully crafted optics with an ergonomic design and delivers performance that is far from a given at this price point. Whether you are an experienced amateur astronomer or just beginning your passion for the night sky, this eyepiece will pleasantly exceed your expectations.
Optical construction
The eyepiece is built around a 7-element optical design arranged into 4 groups. All optical elements feature fully multi-coated (FMC) anti-reflection coatings that maximise light transmission and suppress unwanted reflections and ghosting. The edges of the lenses are blackened to further reduce internal light scatter within the eyepiece barrel, contributing to the high contrast of the final image. The result is noticeably sharp, colour-accurate views - even at the edges of the field of view, where cheaper eyepieces typically suffer from coma or field curvature.
High magnification for planetary detail
A 6mm focal length planetary eyepiece provides high magnification suited to detailed work - observing Jupiter's cloud bands, Saturn's rings, lunar craters or the polar caps of Mars. Thanks to its bright and contrastive optics, it remains highly usable even on instruments with a lower light-gathering capability.
Generous eye relief and wide field of view
One of the standout advantages of the LE Planetary series is the long eye relief, which allows comfortable viewing even with glasses. At a 6mm focal length - where eye relief is traditionally a challenge - this is a genuinely valuable feature. The 55° apparent field of view is above average for a planetary eyepiece at this focal length, giving the observer a pleasant sense of looking out into space rather than peering through a keyhole.
No kidney bean effect
The eyepiece is entirely free of the so-called kidney bean effect - the unpleasant phenomenon where moving your eye towards the edge of the field causes part of the image to disappear or darken. You do not need to keep your eye perfectly centred on the optical axis, making it noticeably more comfortable to track moving objects or to observe from uneven terrain.
Compatibility with reflectors and other telescope types
The LE Planetary eyepieces perform well even with Newtonian reflectors, where the demands on off-axis aberration correction are higher than with refractors or catadioptric systems. A clean, distortion-free image across the entire field of view is therefore a welcome bonus for owners of Dobsonians and Newtonians who want to get the most out of their eyepiece. The standard 1.25″ barrel diameter ensures compatibility with the vast majority of telescopes on the market.
Available focal lengths in the LE Planetary series
If you are looking for a complete set for planetary observation, the LE Planetary series is available in the following focal lengths:
| Focal length |
Typical use |
| 3 mm |
Extreme magnification, finest detail |
| 5 mm |
Very high magnification, planetary detail |
| 6 mm |
High magnification, planets and Moon |
| 9 mm |
Medium-high magnification |
| 12.5 mm |
Medium magnification |
| 14.5 mm |
Medium-low magnification |
| 18 mm |
Overview and object location |
Key specifications
| Parameter |
Value |
| Focal length |
6 mm |
| Apparent field of view |
55° |
| Barrel diameter |
1.25″ |
| Optical design |
7 elements in 4 groups |
| Coatings |
FMC (fully multi-coated) |
| Blackened lens edges |
Yes |
| Kidney bean effect |
None |
| Suitable for use with glasses |
Yes |
Summary
The Omegon LE Planetary 6mm is a reliable, optically capable eyepiece that deserves a place in every observation bag. Whether you are planning your first serious planetary session or looking for an affordable upgrade to an older eyepiece, this choice will not disappoint.
