radio astronomy observatory with a radio telescope rt-64 tna-1500 used for study pulsars and planets of solar system, kalyazin,

antenna astro astronomy away big body celestial communication cosmos equipment europe exploration far federation instrument kalyazin large mars mirror observatory parabolic planet planets pulsar pulsars radio region research rt64 russia russian science scientific sky solar space star study summer system technology telecommunication telescope tna tna1500 tver used