1. Astrophysics Research Institute, Liverpool John Moores University , IC2, Liverpool Science Park, Brownlow Hill, Liverpool L3 5RF, UK
2. School of Physics and Astronomy, University of Leicester , Leicester LEI 7RH, UK
3. School of Earth and Space Exploration, Arizona State University , Box 871404, Tempe, AZ 85287-1404, USA
4. Department of Astronomy, The Ohio State University , Columbus, OH 43210, USA
5. Minnesota Institute for Astrophysics, School of Physics and Astronomy, 116 Church Street SE, University of Minnesota , Minneapolis, MN 55455, USA
6. American Association of Variable Star Observers , 49 Bay State Rd, Cambridge, MA 02138, USA
7. American Meteorological Society , 45 Beacon Street, Boston, MA 02108-3693, USA
8. Astronomical Ring for Access to Spectroscopy – http://www.astrosurf.com/aras
9. Observatoire de l’Eridan et de la Chevelure de Bérénice , 02400 Epaux-Bézu, France
10. Tartu Observatory, University of Tartu , 61602 Tõravere, Estonia
11. Observatoire de la Tourbière , 38690 Châbons, France
12. Department of Physics and Engineering Physics, University of Saskatchewan , Saskatoon, SK S7N 5E2, Canada
13. Seville University , 41004 Seville, Spain