The Baader Hyperion 21 mm eyepiece offers a wide 68° field of view—approximately as much as the eye can take in without moving.
Its 8-element optical design in five groups delivers sharp, colour-corrected images across the entire field of view, with a comfortable 20 mm eye relief. Thanks to its modern glass types and special anti-reflective coatings, it provides outstanding light transmission and colour fidelity. Anti-reflection grooves eliminate ghost images.
Once the eyecup has been removed, an M43x0.75 thread is revealed at the top of the eyepiece for attaching various cameras. An M43/T2 adapter is required for this purpose.
The eyepiece provides a similarly large area of sky as a longer focal length Plössl eyepiece, while its higher magnification makes celestial objects appear more spectacular. Its focal length can optionally be adjusted using fine tuning rings or a 2” Baader filter.
The eyepiece is compatible with both 1.25” and 2” focusers.
Accessories:
- 1.25” dust cap
- 2” dust cap
- fold-down eyecup
- large and small eyepiece caps
- winged eyecup
- soft case

