Celestron OMNI Plössl 4mm eyepiece - 52° - 1.25″
Looking for an eyepiece that takes your planetary observing to the next level? The Celestron OMNI Plössl series represents a significant step forward compared to ordinary Plössl-class eyepieces. It combines carefully crafted optics with quality mechanical construction - at a price that reflects real value, not just a brand on the box. The 4mm focal length makes it an ideal choice for high magnification when observing planets, the Moon or double stars.
Fully multi-coated optics for maximum contrast
At the heart of every eyepiece is its optical quality. The OMNI Plössl 4mm is equipped with full multi-coating FMC (Fully Multi-Coated) on all optical surfaces - not just on some of them, as is common with cheaper eyepieces. This significantly reduces light loss caused by reflections, resulting in a brighter, more contrasty image free from annoying glare or ghost images that would otherwise obscure fine detail on planetary discs or during full Moon observation.
52° field of view and comfortable eye relief
A 52° field of view is the standard for the Plössl class, but combined with quality optics it delivers a pleasant, sharp image all the way to the edge of the field. The 6mm exit pupil ensures comfortable eye placement without the need for precise positioning - observing remains comfortable even during longer sessions.
Quality mechanical construction
The technically minded observer will appreciate not only the optics but also the mechanics. The internal surfaces of the barrel are double-anodized (blackened), which effectively suppresses stray light reflections inside the eyepiece and contributes to the overall image contrast. The exterior is finished with an INOX treatment that provides resistance to abrasion and corrosion - so the eyepiece holds up well even in demanding field conditions. The standard 1.25″ barrel diameter ensures compatibility with the vast majority of telescopes on the market.
Who is this eyepiece for?
The Celestron OMNI Plössl 4mm is an excellent choice for anyone who wants to get the most out of an affordable refractor, Newtonian or catadioptric telescope at high magnification. Whether you are studying the surface details of Mars, the ring system of Saturn, or splitting double stars at the limit of your instrument's resolving power - this focal length combined with quality FMC optics will deliver reliable performance. It suits both beginners looking for their first truly quality eyepiece and experienced observers building a collection of eyepieces for various situations.
The Celestron OMNI Plössl is a proven series with a long-standing reputation - a solid foundation for any eyepiece set. If you are looking for a reliable, optically honest short-focal-length eyepiece for planetary observation, this is exactly what you need.
Technical specifications
| Parameter |
Value |
| Focal length |
4mm |
| Field of view |
52° |
| Exit pupil |
6mm |
| Barrel diameter |
1.25″ |
| Optical coating |
FMC - Fully Multi-Coated |
| Barrel finish |
Double-anodized interior, INOX exterior |
| Eyepiece design |
Plössl |
