The HEGRA experiment (High Energy Gamma Ray Astronomy) is a collaboration made up of two institutes belonging to the German Max-Planck-Gesellschaft (Munich and Heidelberg), the Yerevan Institute of Physics (Armenia) and faculties of Physics at the Madrid (UCM), Hamburg, Kiel and Wuppertal universities.
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For further information, visit the HEGRA page at Wuppertal University, at the Max Planck Institute in Munich or at the Max Planck Institute in Heidelberg.
You can access internal collaboration information if you are a member of the HEGRA Experiment.