California Historical Society Collection, 1860-1960

Los Angeles Area Chamber of Commerce Collection 1890-1960

Drawing by R. W. Porter depicting an interior view of Mount Palomar Observatory and a cross-sectional view of the 200-inch telescope, with parts labelled, 1938

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Drawing by R. W. Porter depicting an interior view of Mount Palomar Observatory and a cross-sectional view of the 200-inch telescope, with parts labelled, 1938

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Photograph of a drawing by R. W. Porter depicting an interior view of Mount Palomar Observatory and a cross-sectional view of the 200-inch telescope, with parts labelled, 1938. The telescope is illustrated cut away along a vertical plane through the polar axis. At the bottom of the picture, the ground floor of the observatory is visible. In the center of the image, the 200-inch telescope is seen pointed upright, supported by a slanted tubular base. To the left of center, a phantom drawing shows how the observer gets on and off the prime focus tube atop the telescope. Surrounding the telescope is the cross-sectional view of the dome and its shutter openings.; Photoprint reads: "The 200-inch telescope. This drawing, by Russel W. Porter, associate in optics and instrument design, California Institute of Technology, shows the 200-inch telescope, cutaway along a vertical plane through the polar axis. The tube weighs about 140 tons, the entire instrument 500 tons, and the rotating dome, 1000 tons. The telescope, to be located atop Palomar Mountain in Southern California, will be completed early in 1947. Area of sky to be photographed will be quite small, say a patch having a dimension from 1/5 to 1/3 that of the full moon. Considered as a camera, the telescope will have a "speed" of F/3.3".

Asset Metadata

Title Drawing by R. W. Porter depicting an interior view of Mount Palomar Observatory and a cross-sectional view of the 200-inch telescope, with parts labelled, 1938

Creator Porter, R.W. (author)

Publisher University of Southern California. Libraries (digital)

Date Created 1938

Subject Astronomical instruments (lcsh), Mount Palomar Observatory (subject), Observatories (lcsh), Observatories -- Mount Palomar Observatory (file heading), research facilities (adlf), Telescopes (lcsh)

Tags OAI-PMH Harvest

Place California (states), San Diego (counties), USA (countries)

Temporal Subject 1938

Type images

Format 1 photograph : photoprint, b&w ; 26 x 21 cm. (aacr2), art (aat), photographic prints (aat), photographs (aat)

Source California Historical Society (contributing entity), California Historical Society Collection, 1860-1960 (collection), Los Angeles Area Chamber of Commerce Collection, 1890-1960 (subcollection)

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-m10562

Identifier 42381 (accession number), CHS-42381 (call number), CHS-42381 (filename), chs-m825 (legacy collection record id), chs-c65-13707 (legacy record id), chs-m10562 (legacy record id), USC-2-1-1-10710 (legacy record id), 84-1-972 (microfiche number), USC (project)

IIIF ID [Document.IIIFV3ID]

DM Record ID 13707

Unique identifier UC143308

Legacy Identifier CHS-42381.tiff

Type Image

Internet Media Type image/tiff

Resolution 16.8 in × 20.9 in at 300dpi
42.8 cm × 53.3 cm at 300dpi

Inherited Values

Title Los Angeles Area Chamber of Commerce Collection 1890-1960

Description The more than 3,600 unique photographs of this collection document the Chamber's promotional efforts during the city's early years. In addition to stock photographs, there are pictures of the elaborate booths and displays that the Chamber prepared for use at state fairs and international trade shows. The photographic collection contains images showing the growth of important municipal enterprises, such as ground transportation systems, aviation, and shipping. In addition there are about 1,000 lantern slides in this collection -- not yet fully digitized.

Date Created 1860/1960

Linked assets

Los Angeles Area Chamber of Commerce Collection 1890-1960

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