Humason, Milton Lassell
BornDodge Center, Minnesota, USA, 19 August 1891
DiedMendocino, California, USA, 18 June 1972
American observational astronomer Milton Humason is eponymized in the Humason-Zwicky stars, but his most important contribution was undoubtedly the exposure of spectrograms of large numbers of faint galaxies on the Mount Wilson Observatory 100-in. and Palomar Mountain Observatory 200-in. telescopes, which were used to estimate values of the Hubble constant from 1929 to 1956, including values reported by Edwin Hubble himself. Humason had roughly an eighth-grade education, plus an honorary D.Sc. (1950) from Lund Observatory. He married Helen Dowd in 1910 or 1911, and they had one son.
The involvement of Milton Humason with Mount Wilson Observatory began during the construction of the 100-in. telescope (which saw first light in 1917). Humason was a mule packer and driver hauling equipment and supplies up the 10-grade dirt road. When the telescope was completed, he was hired as a janitor, and, 2 year ...
- “Humason, Milton Lassell. ”. Who Was Who in America. Marquis Who’s Who, Chicagopp. 356
- Bowen, IS (1973) Milton Lassell Humason. Quarterly Journal of the Royal Astronomical Society 14: pp. 235-236
- Hubble, E (1929) A Relation between Distance and Radial Velocity among Extra-Galactic Nebulae. Proceedings of the National Academy of Sciences 15: pp. 168-173
- Hubble, E, Humason, ML (1931) The Velocity-Distance Relation among Extra-Galactic Nebulae. Astrophysical Journal 74: pp. 43-80
- — (1934). “The Velocity-Distance Relation for Isolated Extragalactic Nebulae.” Proceedings of the National Academy of Sciences 20: 264–268.
- Humason, ML (1929) The Large Radial Velocity of N. G. C. 7619. Proceedings of the National Academy of Sciences 15: pp. 167-168
- — (1931). “Apparent Velocity-Shifts in the Spectra of Faint Nebulae.” Astrophysical Journal 74: 35–42.
- — (1936). “The Apparent Radial Velocities of 100 Extra-Galactic Nebulae.” Astrophysical Journal 83: 10–22.
- Humason, ML, Mayall, NU, Sandage, AR (1956) Redshifts and Magnitudes of Extragalactic Nebulae. Astronomical Journal 61: pp. 97-162
- Nicholls, CS eds. (1997) “Humason, M. L.”. St. Martin’s Press, New York
- Sandage, Alan R. (2004). Centennial History of the Carnegie Institution of Washington. Vol. 1, The Mount Wilson Observatory: Breaking the code of Cosmic Evolution. Cambridge: Cambridge University Press.
- — (2003). Private correspondence to the authors.
- Humason, Milton Lassell
- Reference Work Title
- Biographical Encyclopedia of Astronomers
- pp 1028-1030
- Print ISBN
- Online ISBN
- Springer New York
- Copyright Holder
- Springer Science+Business Media New York
- Additional Links
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- Editor Affiliations
- 1. Department of Earth Science, University of Northern Iowa
- 2. University of California, Irvine School of Physical Sciences
- 3. Rice University
- 4. Whitman College
- 5. York Univesity
- 6. University of Wisconsin
- 7. University of Oklahoma
- 8. Harvard University
- Author Affiliations
- 8126. University of California, Irvine School of Physical Sciences, Irvine, CA, 92697-4575, USA
- 8127. University of Calgary, Calgary, AB, Canada
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