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The optical system of the H.E.S.S. imaging atmospheric Cherenkov telescopes, Part II: mirror alignment and point spread function
R. Cornils, S. Gillessen, I. Jung. +16
Mirror facets of the H.E.S.S. imaging atmospheric Cherenkov telescopes are aligned using stars imaged onto the closed lid of the PMT camera, viewed by a CCD camera. The alignment p…
The optical system of the H.E.S.S. imaging atmospheric Cherenkov telescopes, Part I: layout and components of the system
K. Bernloehr, O. Carrol, R. Cornils +18
H.E.S.S. -- the High Energy Stereoscopic System -- is a new system of large imaging atmospheric Cherenkov telescopes, with about 100 m^2 mirror area for each of four telescopes, an…
HEGRA Contributions to the 28th International Cosmic Ray Conference
HEGRA Collaboration, in particular, : +10
This preprint encompasses thirteen individual contributions of the HEGRA collaboration to the 28th International Cosmic Ray conference in Tsukuba, Japan. The papers report on resul…
The Technical Performance of the HEGRA System of Imaging Air Cherenkov Telescopes
G. Puehlhofer, O. Bolz, N. Goetting +1
Between early 1997 and late 2002, the HEGRA collaboration operated a stereoscopic system of 4 (later 5) imaging atmospheric Cherenkov telescopes. In this paper we present the calib…
Is the Giant Radio Galaxy M87 a TeV Gamma-Ray Emitter?
HEGRA Collaboration, F. Aharonian, A. Akhperjanian +1
For the first time an excess of photons above an energy threshold of 730 GeV from the giant radio galaxy M87 has been measured at a significance level above 4 sigma. The data have…