Baader Planetarium Hyperion 8mm 68° eyepiece 2″-1.25″
If you are looking for an eyepiece that works well for both visual observation and astrophotography, performs reliably with refractors and reflectors alike, and still offers a few pleasant extras - the Baader Hyperion 8mm is exactly that. This eyepiece series was not designed as an average telescope accessory. It was built as a thoughtful, versatile optical instrument that grows together with your needs.
Optical quality and image performance
The Baader Hyperion 8mm features an 8-element optical design arranged in five groups, delivering a sharp and high-contrast image across the entire 68° apparent field of view - without uncomfortable distortion at the edges. The FMC (fully multi-coated) anti-reflection treatment ensures clean, neutral color rendering while suppressing unwanted reflections and ghost images. Excellent internal blackening of the barrel eliminates stray light and further increases contrast, whether you are observing planets or deep-sky objects.
Comfortable eye relief for all observers
All focal lengths in the Hyperion series share the same eye relief of 20mm. This is a very comfortable value - you do not need to press your eye against the eyepiece. There is enough space even for observers who wear glasses. The rubber eyecup is adjustable, allowing you to find the most comfortable eye position and reducing interference from surrounding light.
Modular design - two eyepieces in one
One of the most interesting features of the Hyperion series is its modular construction. By unscrewing the negative element, the eyepiece transforms into a 6-element 2″ Erfle eyepiece with a significantly longer focal length - meaning you effectively have two different optical systems in a single unit. This feature is especially appreciated by more experienced observers who enjoy experimenting with their optical setup or need a flexible solution for different types of telescopes.
Ready for astrophotography
Hyperion eyepieces are designed from the ground up for projection and afocal photography. On the output end of the eyepiece you will find two threads - M54 and M43 - for connecting a camera or a video adapter. Both threads are protected by rubber caps during regular visual use to prevent damage. Adapters for other common photographic thread sizes are available as accessories, so the eyepiece can easily be connected to the vast majority of DSLR and mirrorless cameras.
What is the Baader Hyperion 8mm best suited for?
The Baader Hyperion 8mm universal eyepiece is ideal for detailed planetary observation, where its shorter focal length provides high magnification. It also performs very well for observing compact nebulae and globular star clusters. Thanks to the 2″ barrel with a 1.25″ adapter, it can be used with virtually any telescope. Whether you are a beginner looking for your first quality eyepiece or an experienced observer building a modular set, the Hyperion 8mm will earn a permanent place in your equipment case.
Key specifications
| Parameter |
Value |
| Focal length |
8mm |
| Apparent field of view |
68° |
| Eye relief |
20mm |
| Optical design |
8 elements in 5 groups |
| Barrel size |
2″ with 1.25″ adapter included |
| Coating |
FMC (fully multi-coated) |
| Camera threads |
M54 and M43 |
| Modular function |
Yes - converts to 6-element 2″ Erfle eyepiece |
| Eyecup |
Adjustable rubber eyecup |
