Observatories and telescopes: Abastumani - Abastumani Astrophysical Observatory, Georgia. 1.25 m reflector Asiago - Asiago Astrophysical Observatory, Italy. 1.8 m reflector Bohyuns - Bohyunsan Optical Astronomy Observatory, Japan. 1.8 m reflector Calern - Calern observing station of the Observatoire de la Cote d’Azur, France. 1 m C2PU West telescope CASLEO - Complejo Astronomico El Leoncito (CASLEO), Argentine. 2.15 m reflector Catalina - Catalina Station, Lunar and Planetary Laboratory, University of Arizona, USA. 1.5 m reflector Crimea - Crimean Astrophysical Observatory, Ukraine. 1.25 m and 2.6 m reflectors CTIO - Cerro Tololo Iner-American Observatory, Chile. 1.5 m reflector di Brera - Osservatorio Astronomico di Brera-Merate, Italy. 1 m reflector Dodaira - Dodaira Observatory of the National Astronomical Observatory, Japan. 0.91 m reflector Dushanbe - Institute of Astrophysics, Dushanbe, Tajikistan. 0.7 m reflector ESO VLT - ESO Cerro Paranal Observatory, Chile. Very Large Telescope 8.2 m reflector Higashi - Higashi-Hiroshima Observatory, Japan. 1.5 m reflector Hishi-H - Hishi-Harima Astronomical Observatory, Japan. 2.0 m reflector Kharkiv - Institute of Astronomy of Kharkiv V.N.Karazin National University, Ukraine. 0.7 m reflector La Palma - Spanish Observatorio del Roque de los Muchachos, La Palma, Canarias, Spain. 2.5 m Nordic Optical Telescope Lick - Lick Observatory, Santa Cruz, California, USA. Shane 3 m telescope LOIANO - Loiano station of the Astronomical Observatory of Bologna, Italy. 1.52 m Cassini telescope Lowell - Lowell Observatory, USA. 1.8 m reflector Lulin - Lulin Observatory of National Central University, Taiwan. 1.0 m reflector LOT Mauna Kea - Maunakea Observatory, Hawaii, USA. 0.6 m and 2.2 m reflectors McDonald - McDonald Observatory, USA. 0.9 m and 2.1 m reflectors Mitaka - Mitaka Campus of the National Astronomical Observatory of Japan. 0.5 m reflector Nayoro - Nayoro Observatory of Hokkaido University, Japan. 1.6 m Pirka reflector Palomar - Palomar Mt., Hale Observatories, USA. 1.5 m reflector Rozhen - Bulgarian National Astronomical Observatory, Rozhen, Bulgaria. 2 m Ritchey-Chretien-Coude (RCC) telescope Sanglok - Sanglok Observatory of Institute of Astrophysics, Dushanbe, Tajikistan. 1 m reflector Steward - Steward Observatory, USA. 0.5 m and 2.3 m reflectors Tarija - Soviet-Bolivian Astronomical Observatory, Tarija, Bolivia. 0.6 m reflector Terskol - Peak Terskol Ukrainian-Russian Observatory, Northern Caucasia, Russia. 2.0 m reflector Turin - INAF-Astronomical Observatory of Turin, Italy. 1 m reflector