Description
This collection contains records of the Mount Wilson Observatory Optical Shop, relating to the operation of the department
from 1911 to 1963 (bulk 1930-1947). The department was responsible for repairing and maintaining the Observatory's telescopes,
as well as for observatories around the United States. The materials include research and procedural notes, correspondence,
inventories and requisition slips, and job lists and employee time sheets.
Background
Founded in December 1904 by George Ellery Hale and funded by the Carnegie Institution, the Mount Wilson Observatory quickly
became one of the 20th century's major astronomical research centers. Located just north of Los Angeles high atop the San
Gabriel Mountains, the observatory took full advantage of Southern California's clear nights and uniquely steady air. The
observatory's 60'' telescope completed in 1908 was the largest then in existence. In 1917, another Mount Wilson telescope,
100'' in diameter, claimed that title. The Optical Shop was the department responsible for repairing and maintaining these
telescopes. Optical Shop workers ground and polished mirrors, lenses, and prisms: tasks requiring meticulous precision and
technique. In addition to serving Mount Wilson, the Optical Shop produced optical instruments for observatories across the
country.
Extent
4.51 Linear Feet
(9 boxes)
Restrictions
The Huntington Library does not require that researchers request permission to quote from or publish images of this material,
nor does it charge fees for such activities. The responsibility for identifying the copyright holder, if there is one, and
obtaining necessary permissions rests with the researcher.
Availability
Open for use by qualified researchers and by appointment. Please contact Reader Services at the Huntington Library for more
information.