\"Astronomer\" Harold Johnson Hand Signed FDC Dated 1948 For Sale
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\"Astronomer\" Harold Johnson Hand Signed FDC Dated 1948:
$209.99
Up for sale "Astronomer" Harold Johnson Hand Signed First Day Cover Dated 1948.
ES-7285E
Harold Lester Johnson (April 17, 1921 –
April 2, 1980) was an American astronomer. Harold Johnson was born in Denver, Colorado, on
April 17, 1921. He received his early education in Denver public schools and
went to the University of Denver,
graduating with a degree in mathematics in 1942. Johnson was recruited by
the MIT Radiation Laboratory to work on World War II related
radar research. After the war Johnson began graduate studies in astronomy
at University of California,
Berkeley where he completed his thesis under Harold Weaver in
1948. In the following years working at Lowell Observatory, University of
Wisconsin–Madison, Yerkes Observatory (where
he met William Wilson Morgan), McDonald Observatory, University of Texas–Austin,
the Lunar and Planetary Laboratory in Tucson, Arizona, University of Mexico he applied his instrumental and
electronic talents to developing and calibrating astronomical photoelectric
detectors. He died of a heart attack in Mexico City in
1980. He and his wife, Mary Elizabeth Jones, had two children. Johnson was
awarded the Helen B.
Warner Prize by the American Astronomical Society in 1956. He was elected to
the National Academy of Sciences in
1969. He is remembered for introducing the UBV photometric system (also called the Johnson or
Johnson-Morgan system), along with William Wilson Morgan in
1953.
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