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The 200" Disk and the Hale Reflecting Telescope: Histories

Find books, articles, and archival materials on the 200" disk installed in the Hale Telescope at the Mount Palomar Observatory. For more information, please search our library catalog or contact our Ask a Librarian service.


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Transporting the 200" Disk

Loading the Disk on the Railway Car

Corning Watches as Disk is Loaded onto Train. Photograph by Ayres A. Stevens, Corning Glass Works. United States, Corning, NY. March 26, 1936. Glass slide: 8 x 10 cm. George V. McCauley Archive, the Rakow Research Library of The Corning Museum of Glass, Corning, NY.

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Interlibrary Loan

Interlibrary Loan (ILL) is a cooperative library service that allows you to borrow materials through your local library.

For more information visit our ILL page or e-mail