E. Lindfors, K.Nilsson (Finnish Centre for Astronomy with ESO, University of Turku, Finland), U. Barres de Almeida, D. Mazin, D. Paneque, K. Saito (Max-Planck-Institut für Physik, Münich, Germany), J. Becerra Gonzalez (Inst. de Astrofisica de Canarias, Spain and University of Hamburg, Germany), K. Berger (Inst. de Astrofisica de Canarias, Spain), G. De Caneva (DESY, Zeuthen, Germany), C. Schultz (Universita di Padova and INFN, Italy), J. Sitarek (IFAE, Edifici Cn., Campus UAB, Spain), A. Stamerra (Universita di Pisa, and INFN Pisa, Italy), F. Tavecchio (INAF National Institute for Astrophysics, Italy), on behalf of the MAGIC collaboration, S.Buson (INFN and Universita di Padova, Italy), F. D'Ammando (Univ. Perugia and INFN), M. Hayashida (SLAC, California Institute of Technology, USA and Kyoto University, Japan), et al. (3 additional authors not shown)