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Bernhard Schmidt, Estonian-German optician, invented the Schmidt camera (born 1879)
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Bernhard Schmidt
Baltic German astronomer
Bernhard Woldemar Schmidt was an Estonian optician. In 1930 he invented the Schmidt telescope, which corrected for the optical errors of spherical aberration, coma, and astigmatism, making possible for the first time the construction of very large, wide-angled reflective cameras…Source: Wikipedia (CC BY-SA)
Schmidt camera
Astrophotographic telescope
A Schmidt camera, also referred to as the Schmidt telescope, is a catadioptric astrophotographic telescope designed to provide wide fields of view with limited aberrations. The design was invented by Bernhard Schmidt in 1930.Source: Wikipedia (CC BY-SA)