Institution: | Department of Physics, Tuorla Observatory, University of Turku, FIN-21500 Piikkioe, Finland;Department of Physics, The University of the West Indies, St. Augustine, Trinidad &Tobago;Department of Information Technologies, University of Turku, FIN-21500 Piikkioe, Finland;Sobolev Astronomical Institute, St. Petersburg State University, Universitetskij pr. 28, 198504 St. Petersburg, Stary Peterhof, Russia |