Luca Franci¹, Emanuele Papini², David Burgess¹, Christopher H K Chen¹, Daniele Del Sarto³, Simone Landi², Andrea Verdini² and Petr Hellinger⁴, (1)Queen Mary University of London, School of Physics and Astronomy, London, United Kingdom, (2)Università di Firenze, Dipartimento di Fisica e Astronomia, Firenze, Italy, (3)University of Lorraine Nancy, Nancy Cedex, France, (4)Astronomical Institute, CAS, Ondrejov/Prague, Czech Republic