This is a VO rendition of a (small) public sample of gamma photons
detected by HESS.  The data is from
https://hess.science/hess_dl3_dr1_v0.6.tar.gz (with docs at
https://hess.science/hess_dl3_dr1_v0.6.pdf).  Our contact was Ramin Marx
from LSW.

The test set are the events from

hess_dl3_dr1_obs_id_020136.fits.gz