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      n   Helmut (Heinrich Waldemar) ('hɛlmu:t). born 1918, German Social Democrat statesman; chancellor of West Germany (1974--82)  

Schmidt telescope   , camera  
      n   a catadioptric telescope designed to produce a very sharp image of a large area of sky in one photographic exposure. It incorporates a thin specially shaped glass plate at the centre of curvature of a short-focus spherical primary mirror so that the resulting image, which is focused on a photographic plate, is free from spherical aberration, coma, and astigmatism  
     (C20: named after B. V. Schmidt (1879--1935), Estonian-born German inventor)  
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