TY CONF TI The new 50-cm multipurpose telescope of the Russian-Cuban Observatory KW telescopes; methods: observational; instrumentation: photometers KW spectrographs; stars: variables: general JO Modern astronomy: from the Early Universe to exoplanets and black holes AU Ibrahimov, M.. AU Nalivkin, M.. AU Naroenkov, S.. AU Shugarov, A.. AU Ponce-Rodriguez, O.. AU Barcenas-Fonseca, Z.. PY 2024 PB Special Astrophysical Observatory of the Russian Academy of Sciences