TS Optics Super 10mm 52° 1.25″ Reversed Kellner Eyepiece
The TS Optics Super 10mm Reversed Kellner eyepiece is a popular choice among amateur astronomers looking for a reliable, affordable eyepiece for regular observing sessions. It delivers sharp, comfortable views and works well with most amateur telescopes - making it an excellent first eyepiece as well as a dependable everyday tool for more experienced observers.
Reversed Kellner Design - Sharp Views Across the Full Field
The Reversed Kellner (RK) design builds on the classic Kellner layout but improves on it significantly. A three-element optical system - one single element and one cemented doublet - minimises optical aberrations and maintains good detail and sharpness across the entire field of view.
Every air-to-glass surface carries an MgF2 anti-reflection coating, which reduces internal reflections and increases the contrast of the transmitted image. Stars appear as crisp points of light, and planetary detail stands out clearly with minimal ghosting or flare. The 52° apparent field of view gives a pleasant sense of space without any distracting vignetting at the edges.
Comfortable to Use - Including for Glasses Wearers
The eyepiece comes with a soft rubber eyecup that shields your eye from stray light and makes extended observing sessions more comfortable. The eyecup folds down fully, so glasses wearers can use this eyepiece without removing their glasses and still see the complete field of view. The eye relief is 14 mm, which contributes further to comfortable, relaxed viewing.
These practical features are a large part of why Reversed Kellner eyepieces are so often recommended as a first eyepiece for beginners in astronomy.
What Can You Observe With a 10mm Eyepiece?
A 10mm focal length places this eyepiece in the medium magnification range, which is ideal for a wide variety of targets. It performs particularly well on:
- The Moon - craters, mountain ranges and surface detail
- Planets - Saturn's rings, Jupiter's cloud bands and moons
- Open star clusters - the Pleiades and similar objects
- Centring and alignment tasks during observing sessions
Beyond visual observing, the TS Optics Super 10mm is well suited to guiding and object-centring work, making it a versatile tool to keep in your eyepiece case.
Universal Compatibility
The barrel diameter is the standard 1.25″, and the barrel includes a filter thread. This means the eyepiece fits any standard 1.25″ focuser without adapters, and you can attach Moon filters or other astronomy filters directly - no additional accessories required.
About TS Optics
TS Optics is a German brand with a long track record in astronomical optics. The company offers a wide range of eyepieces, telescopes and accessories for beginners and advanced observers alike. TS Optics products combine solid optical quality with accessible pricing - which is why they appeal both to newcomers choosing their first serious equipment and to experienced observers who value proven, dependable optical designs.
The Super Kellner series sits at the dependable, practical end of the TS Optics range. It is valued for its simplicity, robustness and very strong price-to-performance ratio.
Technical Specifications
| Parameter |
Value |
| Optical design |
Reversed Kellner (RK) |
| Focal length |
10 mm |
| Apparent field of view |
52° |
| Barrel diameter |
1.25″ |
| Eye relief |
14 mm |
| Number of optical elements |
3 (1 single element + 1 cemented doublet) |
| Coating |
MgF2 anti-reflection coating on all air-to-glass surfaces |
| Eyecup |
Soft rubber, foldable - suitable for glasses wearers |
| Filter thread |
Yes - standard 1.25″ |
| Brand |
TS Optics |
