Ali Ravanbakhsh¹, Robert F Wimmer-Schweingruber¹, Mahesh Yedla¹, Shrinivasrao R. Kulkarni¹, Christoph Terasa¹, Michael L. Richards¹, Lars Seimetz¹, Bjoern Schuster¹, Robert Elftmann¹, Sebastian Boden¹, Stephan I Boettcher¹, Walter Boogaerts¹, Sandra Eldrum¹, Stefan Kolbe¹, Violetta Knieriem¹, Daniel Pacheco¹, Lauri Panitzsch², Cesar Martin-Garcia³, Javier Rodriguez-Pacheco⁴, Manuel Prieto⁴, Sebastian Sanchez⁴, Raul Gomez-Herrero⁴, Francisco Espinosa Lara⁴, Ignacio Cernuda⁴, Alberto Carrasco⁴, Teresa Isabel Varela⁴, Glenn M Mason⁵, George C Ho⁵, Helmut Seifert⁵ and G Andrews⁵, (1)University of Kiel, Institute for Experimental and Applied Physics, Kiel, Germany, (2)now at OHB Systems, Bremen, Germany, (3)now at Institute of Planetary Research, DLR, Berlin, Germany, (4)University of Alcala, Alcala de Henares, Spain, (5)Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States