- concave subreflector
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вогнутое вспомогательное [малое\] зеркало
Англо-русский словарь технических терминов. 2005.
Англо-русский словарь технических терминов. 2005.
Cassegrain antenna — In telecommunications and radar, a Cassegrain antenna is an antenna in which the feed radiator is mounted at or near the surface of a concave main reflector and is aimed at a convex secondary reflector slightly inside the focus of the main… … Wikipedia