Artesky Premium Flat Field 25mm 65° 1.25″ Eyepiece
The Artesky Premium Flat Field 25mm eyepiece belongs to a premium range designed for serious amateur astronomers who expect consistently high optical performance. It delivers an exceptionally flat and sharp image across the full 65° field of view - right to the very edge. This makes it an excellent choice for observing extended objects such as star clusters, galaxies, and nebulae.
Flat Field Optics - Sharp Edge to Edge
Field curvature is one of the most common optical problems in eyepieces. It causes stars near the edge of the field to appear blurred or distorted, while the centre remains sharp. The Artesky Premium Flat Field range corrects this aberration thoroughly. The entire 65° field of view stays sharp from the centre to the very edge, giving you a natural, realistic view of the night sky without any distortion.
This is especially valuable when observing large objects that fill the field - open clusters, the Andromeda Galaxy, or nebulae. You can scan across the object and trust that every part of the image is in focus.
Anti-Reflection Coating for Better Contrast
All optical elements carry a high-quality anti-reflection coating that reduces unwanted light reflections and maximises light transmission through the lenses. The practical result is improved contrast, more vivid detail, and a more pleasant visual experience - particularly when observing faint deep-sky objects. The quality of the optical coatings is comparable to significantly more expensive eyepieces in the professional segment.
Comfortable for Long Observing Sessions
The Artesky Premium Flat Field 25mm is designed with comfort in mind. A soft rubber eye cup sits gently around the eye and blocks stray light from entering the field of view. The 16mm eye relief is generous enough for observers who wear glasses - you can use the eyepiece comfortably without removing your spectacles.
The body of the eyepiece is wrapped in a non-slip rubber coating that provides a secure grip even in cold conditions when you are wearing gloves. The inside of the barrel is fully blackened to eliminate internal reflections and scattered light within the optical system. This attention to detail makes a visible difference to overall contrast and image clarity, especially when observing near bright objects such as the Moon or planets.
Ideal for Overview and Wide-Field Observation
With a focal length of 25mm, this eyepiece is well suited to low-magnification, wide-field viewing. It works well for finding and framing large objects, orientating yourself on the sky, and simply enjoying sweeping views of rich star fields. It is a reliable, high-quality addition to any mid-size or larger amateur telescope.
Technical Specifications
| Parameter |
Value |
| Focal length |
25mm |
| Apparent field of view |
65° |
| Eye relief |
16mm |
| Barrel diameter |
1.25″ |
| Eye cup |
Soft rubber, foldable |
| Body coating |
Non-slip rubber |
| Internal barrel |
Fully blackened |
| Optical coatings |
Anti-reflection coating on all elements |
| Optical design |
Flat field (field curvature corrected) |
| Recommended use |
Visual observation, wide-field and deep-sky viewing |
Who Is This Eyepiece For?
- Amateur astronomers who want sharp, flat images across the full field of view
- Observers who enjoy wide-field views of star clusters, galaxies, and nebulae
- Spectacle wearers who need comfortable eye relief
- Anyone observing in cold conditions who needs a secure, non-slip grip
- Owners of mid-size or larger telescopes looking for a high-quality low-power eyepiece
Why Choose the Artesky Premium Flat Field Range?
Many eyepieces in this price category still show noticeable field curvature at the edges. The Artesky Premium Flat Field range is specifically engineered to eliminate this problem. The result is an eyepiece that performs like products costing considerably more, while remaining accessible to the serious amateur. If edge-to-edge sharpness matters to you, this eyepiece is worth serious consideration.
