19th Century astronomical chronograph. Historical artwork of an American astronomical chronograph from 'Handbook of Descriptive and Practical Astronom

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19th Century astronomical chronograph. Historical artwork of an American astronomical chronograph from 'Handbook of Descriptive and Practical Astronomy' (1890). These devices were used to record measurements over time, using mechanical or electrical methods to trigger the recordings. The apparatus would involve a clock, as well as a recording mechanism.

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Size: 4996px × 3577px
Photo credit: © ROYAL ASTRONOMICAL SOCIETY/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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