An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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coronagraph
  تاجنگار، هورتاجنگار  
tâjnegâr (#), hurtâjnegâr (#)
Fr.: coronographe  

An instrument which, when used in a telescope,
produces an artificial eclipse, permitting the study of the → solar corona without a total eclipse of the Sun. It was invented in 1930 by the French astronomer Bernard Lyot (1897-1952).

See also: From → corona + → -graph.