Artesky Premium Flat Field 5.5mm 60° 1.25″ Eyepiece
The Artesky Premium Flat Field 5.5mm eyepiece belongs to a premium series designed for demanding amateur astronomers who will not compromise on image quality. This eyepiece delivers exceptional sharpness across the entire 60° field of view - right to the very edges. The combination of high-grade optics and a highly effective anti-reflection coating places this series among the best choices for both regular and demanding astronomical observation. The 5.5mm focal length is ideal for observing planets and fine lunar surface details, where maximum sharpness and accurate detail rendition are essential.
Edge-to-Edge Sharpness
Artesky Premium Flat Field eyepieces feature advanced correction of field curvature - one of the most common optical faults found in eyepieces. This means you can use the full field of view and enjoy sharp images not only at the centre but also at the edges. Celestial objects appear as they truly are, free from distortion.
The 5.5mm eyepiece contains five optical elements, which ensure excellent light transmission and minimise chromatic aberration. The optical system is Fully Multi-Coated (FMC), which significantly reduces unwanted reflections and light scatter. The interior of the eyepiece body is fully blackened to eliminate internal reflections, producing high contrast images that remain comfortable to view even during extended sessions on faint objects.
Practical Design Built for Real Use
The rubber-armoured body provides a secure grip even in winter gloves or difficult outdoor conditions. These design choices show that Artesky developed this eyepiece series for practical use in the field, not just for display on a shelf.
A soft rubber eyecup rests gently against the eye and prevents fatigue during long observing sessions. The 16mm eye relief is particularly generous for spectacle wearers, who can observe in comfort without removing their glasses. Even light distribution across the full field of view also helps to reduce eye strain over extended periods.
Compatible with Most Telescopes
The standard 1.25″ barrel diameter ensures compatibility with the vast majority of telescopes on the market. The compact dimensions make this eyepiece easy to carry and store alongside the rest of your equipment.
A Range for Every Purpose
The Premium Flat Field series is available in several focal lengths to suit different observing goals. The 5.5mm model is well suited to high magnification work - observing planets, the Moon, and double stars. Other focal lengths in the series cover a broader range of uses, from medium magnifications through to wide-field views of star clusters and nebulae. Every eyepiece in the series offers the same high optical quality and build standard.
About Artesky
Artesky is a German astronomical optics brand founded with the goal of offering amateur astronomers premium eyepieces at reasonable prices. The brand combines high optical quality, modern coatings, and ergonomic design into products that compete comfortably with far more expensive alternatives. The Premium Flat Field series is the clearest expression of this philosophy - precise optics paired with practical features such as a rubber-armoured body, blackened interior, and a comfortable rubber eyecup. Artesky regularly expands its range in response to the needs of the astronomy community, and has earned the trust of observers across Europe.
Technical Specifications
| Parameter |
Value |
| Focal length |
5.5mm |
| Apparent field of view |
60° |
| Barrel diameter |
1.25″ |
| Number of optical elements |
5 |
| Eye relief |
16mm |
| Coating |
FMC (Fully Multi-Coated) |
| Body |
Rubber-armoured, blackened interior |
| Eyecup |
Soft rubber, foldable |
| Recommended use |
Planets, Moon, double stars |
