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California Historical Society Collection, 1860-1960
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Title Insurance and Trust and C.C. Pierce Photography Collection 1860-1960
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Snow telescope and the 60-inch tower telescope(?) at Mount Wilson Observatory, ca.1930
(USC DC Image)
Snow telescope and the 60-inch tower telescope(?) at Mount Wilson Observatory, ca.1930
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Description
Photograph of the snow telescope and the 60-inch tower telescope(?) at Mount Wilson Observatory, ca.1930. The snow telescope is the long horizontal building behind the tower telescope. Wires provide additional support for the tower telescope. Trees surround the facilities.; "The Snow Telescope, the oldest telescope on the mountain, is named after its benefactor, Helen Snow. She donated money for its construction at Yerkes Observatory in Williams Bay, Wisconsin. George Ellery Hale moved the telescope to Mount Wilson in 1904 to make observations of the Sun. Dr. Hale took the telescope on loan from Yerkes, although it has been here ever since. Unlike the two tower solar telescopes (which were built later), the light path for the Snow Telescope is horizontal. The building is long and originally was covered in canvas. This was a great fire hazard, and the crude building was replaced with an aluminum shell in 1911. Light from the Sun is reflected off the coelostat mirror (on the right partially in shadow) to another 30-inch mirror (at center) and reflected nearly horizontally 100 feet to the back of the building. There, it falls on a 24-inch concave mirror with a 60-foot focal length and is then brought to a focus at the entrance slit of the spectrograph as an image 6 1/2 inches across. The spectrograph is located in a 15-foot pit. Despite its simple construction, the horizontal light path of the Snow Telescope made observations difficult because heat from the sunlit ground affected the observational seeing. Therefore, shortly after being put into operation in 1904, plans were made to build the 60-foot Solar Tower." -- unknown author.
Asset Metadata
Title
Snow telescope and the 60-inch tower telescope(?) at Mount Wilson Observatory, ca.1930
Subject
Astronomical instruments
(lcsh),
Mount Wilson Observatory
(subject),
Observatories
(lcsh),
Observatories -- Mount Wilson Observatory
(file heading),
research facilities
(adlf),
Telescopes
(lcsh)
Tags
OAI-PMH Harvest
Place
California
(states),
Los Angeles
(counties),
USA
(countries)
Temporal Subject
1930
Type
images
Format
2 photographs : glass photonegative, photoprint, b&w ; 21 x 26 cm.
(aacr2),
glass plate negatives
(format),
photographic prints
(aat),
photographs
(aat)
Source
California Historical Society
(contributing entity),
California Historical Society Collection, 1860-1960
(collection),
Title Insurance and Trust, and C.C. Pierce Photography Collection, 1860-1960
(subcollection)
Date Created
1930
Creator
Pierce, C.C. (Charles C.), 1861-1946
(photographer)
Publisher
University of Southern California. Libraries
(digital)
Repository Email
specol@lib.usc.edu
Repository Name
USC Libraries Special Collections
Repository Location
Doheny Memorial Library, Los Angeles, CA 90089-0189
Rights
Public Domain. Please credit both “University of Southern California. Libraries” and “California Historical Society” as the source. Digitally reproduced by the USC Digital Library.
Copyright
Public Domain. Please credit both “University of Southern California. Libraries” and “California Historical Society” as the source. Digitally reproduced by the USC Digital Library.
Access Conditions
Send requests to address or e-mail given
Permanent Link (DOI)
https://doi.org/10.25549/chs-m10581
Identifier
5672 (
accession number
), CHS-5672 (
call number
), CHS-5672 (
filename
), chs-m265 (
legacy collection record id
), chs-c65-13723 (
legacy record id
), chs-m10581 (
legacy record id
), USC-1-1-1-10730 (
legacy record id
), 1-100-12 (
microfiche number
), USC (
project
)
IIIF ID
[Document.IIIFV3ID]
DM Record ID
13723
Unique identifier
UC143323
Legacy Identifier
CHS-5672.tiff
Type
Image
Internet Media Type
image/tiff
Resolution
18.8 in × 15.0 in at 300dpi
47.9 cm × 38.2 cm at 300dpi
Inherited Values
Title
Title Insurance and Trust and C.C. Pierce Photography Collection 1860-1960
Description
The nearly 15,000 unique photographs of this collection contain the work of C.C. Pierce which cover the Los Angeles region city, street and architectural views, California Missions, Southwestern Native Americans, and turn-of-century Nevada, Arizona, and California. Pierce, active from 1886 to 1940, was one of the leading photographers of his day and amassed a collection of 15,000 images, including his own and those bought and copied from his contemporaries, George Wharton James and Charles Puck. The James collection contains over 2,000 images of portraits, customs, ceremonies, arts, and games of various groups of Southwestern Native Americans.
Date Created
1860/1960
Linked assets
Title Insurance and Trust and C.C. Pierce Photography Collection 1860-1960
Conceptually similar
Horizontal snow telescope at Mount Wilson Observatory, ca.1930
Interior view of the snow telescope, showing the coelostat mirrors, Mount Wilson Observatory, ca.1930
Sixty-foot tower telescope at Mount Wilson Observatory, ca.1930
Interior view of the observatory that houses the 60-inch reflecting telescope at Mount Wilson Observatory, ca.1930
Mount Wilson Observatory and surrounding mountains, ca.1930
Interior view of Lick Observatory on Mount Hamilton showing the telescope, ca.1900
Rudimentary observatory on Mount Wilson, [s.d.]
Interior view of Lick Observatory on Mount Hamilton, California, ca.1904-1909
Mount Wilson Observatory and surrounding area, [s.d.]
Exterior view of Lick Observatory on Mount Hamilton, California, ca.1904-1909
Exterior view of Lick Observatory on Mount Hamilton, California, ca.1904-1909
Echo Mountain Observatory, 1910
Man setting up telescope equipment on a hill, [s.d.]
Interior view of Echo Mountain Observatory (Mt. Lowe Observatory?), showing Professor Larkin with his hand on the telescope, [s.d.].
Exterior view of Mount Palomar Observatory showing a large door, ca.1930-1940
Sierra Madre trail on Mount Wilson, 1886
Echo Mountain House and Observatory with view of basin, [s.d.]
Exterior view of Lick Observatory on Mount Hamilton, California, ca.1904-1909
Drawing by R.W. Porter showing an astronomer seated at the prime focus of Mount Palomar Observatory's 200-inch telescope, 1940
Thirty-six foot refractor telescope inside the Lick Observatory dome on Mount Hamilton, Santa Clara, California, [s.d.]
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