Various spectroscopes in use at the Solar-Physics Observatory
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Change log
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Description
Photographs of the 6in Henry two-prism prismatic camera; Three-prism Hammersley star spectrograph; Calcite-quartz prismatic camera and the Grating Solar Spectroscope. 1890's-1900's era.
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Institute of Astronomy Library
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Except where otherwised noted, this item's license is described as Attribution 4.0 International (CC BY 4.0)