M. T. Belmonte (1), J. C. Pickering (1), M. P. Ruffoni (1), E .A. Den Hartog (2), J. E. Lawler (2), A. Guzman (2), U. Heiter (3) ((1) Blackett Laboratory, Physics Department, Imperial College London (UK), (2) Department of Physics, University of Wisconsin-Madison (USA), (3) Observational Astrophysics, Department of Physics, Astronomy, Uppsala University (Sweden))
