Celestron OMNI Plössl 9mm 52° 1.25″ eyepiece
Looking for an eyepiece that delivers sharp, high-contrast images free of unwanted reflections - without a hefty price tag? The Celestron OMNI Plössl series is exactly what you need. This line represents a significant step up from the classic Plössl design, with a strong focus on optical and mechanical quality, making it a favourite among both beginner astronomers and experienced visual observers.
Fully multi-coated optics for maximum clarity
The key feature of the OMNI eyepieces is full multi-coating (FMC - Fully Multi-Coated) applied to all optical surfaces. In practice, this means maximum light transmission, suppression of stray reflections, and excellent contrast - particularly important when observing planets, the Moon, or bright globular clusters.
The Plössl 9mm eyepiece with a 9mm focal length delivers medium-to-high magnification with a typical telescope, making it ideal for detailed planetary observation as well as viewing brighter deep-sky targets.
Comfortable viewing with a 52° field of view
The 52° apparent field of view is the standard for the Plössl design and ensures a pleasant, immersive observing experience. The 6mm exit pupil is well suited for use in darkness - the eye does not need to strain to find the precise position, making long observing sessions noticeably more comfortable.
Durable construction for demanding use
The OMNI eyepiece barrel is finished with an outer layer of stainless steel (INOX), providing resistance to wear and corrosion even under demanding field conditions. The internal surfaces are double-anodised and blackened - this treatment effectively eliminates unwanted internal light reflections that would otherwise reduce image contrast.
The standard 1.25″ (31.75mm) barrel diameter ensures compatibility with the vast majority of telescopes available on the market.
Who is the Celestron OMNI Plössl 9mm for?
This eyepiece is a great choice for anyone who wants a reliable, optically excellent eyepiece for everyday observing. It works equally well on:
- Refractors
- Reflectors
- Catadioptric telescopes (SCT, Maksutov)
It is an excellent addition to a new telescope's basic kit, or as an upgrade over cheaper eyepieces typically included in starter sets.
Technical specifications
| Parameter |
Value |
| Focal length |
9mm |
| Apparent field of view |
52° |
| Barrel diameter |
1.25″ (31.75mm) |
| Exit pupil |
6mm |
| Optical coating |
FMC - Fully Multi-Coated |
| Body material |
Stainless steel (INOX), double-anodised interior |
Summary
The Celestron OMNI Plössl 9mm 1.25″ is simply a solid, no-compromise instrument - exactly the kind of eyepiece that should be the foundation of every astronomer's kit.
