Institution: | (1) Astronomical Observatory of the Jagiellonian University, ul. Orla 171, 30-244 Cracow, Poland;(2) Department of Astrophysics, Astronomy and Mechanics, Faculty of Physics, University of Athens, Panepistimiopolis, GR-15784 Zografos, Athens, Greece;(3) Mt. Suhora Observatory, Pedagogical University, ul. Podchorazych 2, 30-084 Cracow, Poland |