Institution: | (1) Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, Karachaevo-Cherkesskaya Republic, 357169, Russia;(2) Special Astrophysical Observatory, St. Petersburg Branch, Russian Academy of Sciences, Pulkovo, St. Petersburg, 196140, Russia;(3) Saturn Research and Production Association, pr. Pyatidesyatiletiya Oktyabrya 2-b, Kiev, 148, Ukraine |