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'''HEGRA''', ''High-Energy-Gamma-Ray Astronomy'', was an athmospheric [[Cherenkov effect|Cherenkov]] telescope for [[Gamma-ray astronomy]] on [[La Palma]]. It was operated by the German [[Max-Planck-Institut für Kernphysik]].
A remarkable achievement of the instrument was the detection of the most energetic photons observed from an extragalactic object, at 16 [[TeV]], originating from [[Markarian 501]] (Mrk 501).
It was shutdown in [[2002]] to build the followup telescope [[MAGIC (telescope)|MAGIC]].
==External links==
* [http://www.mpi-hd.mpg.de/hfm/CT/CT.html The HEGRA Atmospheric Cherenkov Telescope System ]
* [http://magic.mppmu.mpg.de/ The MAGIC Telescope Project] (successor of HEGRA)
[[Category:Gamma-ray telescopes]]
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