1. Department of Physics and Astronomy ‘G. Galilei’, University of Padova, Vicolo dell’Osservatorio 3, I-35122 Padova, Italy
2. INAF, Astronomical Observatory of Padova, Vicolo dell’Osservatorio 5, I-35122 Padova, Italy
3. Instituto de Astrofísica de Andalucía, CSIC, Glorieta de la Astronomia s/n, E-18008 Granada, Spain
4. Advanced Optical Imaging Group, School of Physics, University College Dublin, Dublin 4, Ireland
5. Department of Geosciences, University of Padova, Via G. Gradenigo 6, I-35131 Padova, Italy
6. Department of Physics, University of Helsinki, FI-00014 Helsinki, Finland
7. INAF – Astrophysical Observatory of Torino, Via Osservatorio 20, I-10025 Pino Torinese (TO), Italy
8. Laboratoire Inter-Universitaire des Systemes Atmospheriques, Universites Paris 12 – Paris 7, CNRS, France
9. Department of Physics and Astronomy ‘G. Galilei’, University of Padova, Via Marzolo 8, I-35131 Padova, Italy
10. Center of Studies and Activities for Space (CISAS), ‘G. Colombo’, University of Padova, Via Venezia 15, I-35131 Padova, Italy
11. CNR-IFN UOS Padova LUXOR, Via Trasea 7, I-35131 Padova, Italy