Baader Planetarium Hyperion 10mm 68° eyepiece 2″/1.25″
The Baader Hyperion series has earned a strong reputation among astronomers as a truly universal eyepiece that meets practically every demand a modern observer can have. The 10mm focal length model with a 68° apparent field of view is an excellent choice for both planetary observation and wider deep-sky viewing. It delivers a sharp, high-contrast image with a comfortable feel at the eye.
Optical design and image quality
The eyepiece is built on an 8-element design in 5 groups, which provides excellent correction across the entire field of view. The FMC (fully multi-coated) anti-reflection treatment gives a clean, white and high-contrast image free from unwanted reflections. Thorough blackening of all internal surfaces effectively suppresses internal reflections that would otherwise reduce contrast when observing bright objects. The eye relief on this model is 20mm across all focal lengths in the Hyperion range, which ensures comfortable observation even without perfectly centering your eye.
Modular 2-in-1 construction
The Hyperion 10mm is designed as two eyepieces in one. By unscrewing the negative front element, you get a fully functional 6-element 2″ Erfle eyepiece with a significantly longer focal length - ideal for wide-field overview observation or as a standalone eyepiece in a larger focuser. This modularity is one of the key advantages of the entire Hyperion range, and it is especially valuable when you want to get the most out of a single piece of equipment without investing in additional accessories.
Ready for projection and afocal photography
The Baader Hyperion 10mm is fully prepared for projection and afocal photography. Two integrated threads - M54 and M43 - are built into the output section for direct connection of a camera or video camera. Adapters for the most common photographic threads are available as accessories, so the eyepiece can be easily connected to most cameras on the market. Both threads are protected by rubber covers as standard, which prevent dust and mechanical damage during visual use.
Who is this eyepiece for?
If you are looking for a universal eyepiece with high light transmission, comfortable eye relief and the option of photographic use, the Baader Hyperion 10mm is an exceptionally well-equipped choice. It suits experienced visual observers of the Sun, Moon and planets, as well as astrophotographers who want to use the afocal method. The modular design also ensures that this eyepiece becomes a lasting and reliable foundation of your accessories - no matter how your equipment evolves in the future.
Key features at a glance
- Focal length: 10mm
- Apparent field of view: 68°
- Barrel diameter: 2″ / 1.25″
- Optical design: 8 elements in 5 groups
- Coating: FMC (fully multi-coated)
- Eye relief: 20mm
- Integrated threads: M54 and M43 for camera attachment
- Modular design: converts to a 6-element 2″ Erfle eyepiece
- Protective rubber covers for both threads included
Technical specifications
| Parameter |
Value |
| Focal length |
10mm |
| Apparent field of view |
68° |
| Barrel size |
2″ / 1.25″ |
| Optical design |
8 elements in 5 groups |
| Coating |
FMC - fully multi-coated |
| Eye relief |
20mm |
| Camera threads |
M54, M43 |
| Modular Erfle configuration |
6 elements, 2″ barrel |
