This collection consists of the research papers of American astronomer Francis Pease (1881-1938),
one of the original staff members of the Mount Wilson Solar Observatory.
Francis Gladheim Pease (1881-1938) was one of the original staff members of the Mount Wilson
Solar Observatory when it was formed in 1904. His most important contribution to the
Observatory was his expertise in the design and use of astronomical instruments.
Together with George W. Ritchey, Pease designed most of the equipment for the new
Observatory. His most significant work was in the design of the 100-inch Hooker
Telescope, the 20-foot and 50-foot Interferometers, and the 200-inch Hale Telescope.
In the field of astronomical observations, Pease is best remembered for his
collaborations with Albert A. Michelson, the Nobel Laureate physicist at the
University of Chicago. Together, they developed new experiments for determining the
diameters of stars, the velocity of light, and the non-existence of the "ether."
Nevertheless, Pease will be noted for having been a major twentieth-century figure
in the field of astronomical instrument design.
Approximately 4,250 items in 18 boxes
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