This video was part of the 2015 Open House at the Carnegie Observatories in Pasadena, CA,.

We show plates from 1894 to 1971, how they were made at Mount Wilson and Palomar Observatories, and it depicts the astronomers who took the data. 

Historical footage in the public domain, courtesy Caltech Archives Collection.

All still photos of people belong to the Carnegie Observatories, for copyright information and requests contact the Huntington Library, California

Clair de Lune by Debussy performed by Caela Harrison under a CC license.
The Planets by Holst by the USAF Heritage of America band.

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