Harold Johnson (astronomer)
Encyclopedia
Harold Lester Johnson was an American astronomer
.
Johnson was awarded the Helen B. Warner Prize
by the American Astronomical Society
in 1956. He is mostly remembered for introducing the UBV photometric system
(also called the Johnson or Johnson-Morgan system), along with William Wilson Morgan
in 1953.
He died of a heart attack in Mexico City
in 1980.
Astronomer
An astronomer is a scientist who studies celestial bodies such as planets, stars and galaxies.Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using...
.
Johnson was awarded the Helen B. Warner Prize
Helen B. Warner Prize for Astronomy
The Helen B. Warner Prize for Astronomy is awarded annually by the American Astronomical Society to a young astronomer for a significant contribution to observational or theoretical astronomy....
by the American Astronomical Society
American Astronomical Society
The American Astronomical Society is an American society of professional astronomers and other interested individuals, headquartered in Washington, DC...
in 1956. He is mostly remembered for introducing the UBV photometric system
UBV photometric system
UBV photometric system, also called the Johnson system , is a wide band photometric system for classifying stars according to their colors. It is the first known standardized photoelectric photometric system. The letters U, B, and V stand for ultraviolet, blue, and visual magnitudes, which are...
(also called the Johnson or Johnson-Morgan system), along with William Wilson Morgan
William Wilson Morgan
William Wilson Morgan was an American astronomer.The principal theme in Morgan's work was the study of stellar and galaxy classification. Along...
in 1953.
He died of a heart attack in Mexico City
Mexico City
Mexico City is the Federal District , capital of Mexico and seat of the federal powers of the Mexican Union. It is a federal entity within Mexico which is not part of any one of the 31 Mexican states but belongs to the federation as a whole...
in 1980.