Word: coronographs
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...Department is the lofty Climax, Colorado, Solar Station which is engaged in compiling observational data in an effort to explain the mysterious goings-on involved in a Solar eclipse. The Climax Station, jointly operated since May by Harvard and the University of Colorado, is equipped with a Lyot-type coronograph, a special telescope which completely eliminates or greatly reduces all deficiencies of ordinary telescopes for Coronal photography. The Lyot coronograph, installed at Climax in 1940, was the first in the Western Hemisphere and the third in the world. Located just below the timber line on the edge of a community...