Published August 1, 1924
| public
Journal Article
Open
The spectrohelioscope
- Creators
- Hale, George E.
Chicago
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Abstract
Monochromatic images of the sun, photographically recorded with the spectroheliograph, reveal the phenomena of the solar atmosphere in projection against the disk. The light from a spectral line of calcium, hydrogen, or other substance is singled out by a narrow second slit, which moves across the plate while the first slit moves across the solar image. A monochromatic picture is thus built up of countless narrow slit images, recorded side by side in slow succession.
Additional Information
Copyright © 1924 by the National Academy of Sciences. Communicated, July 7, 1924. [A coelostat and a 12-inch objective formerly belonging to the Kenwood Observatory were] [k]indly loaned to me by Professor Frost. The apparatus was set up temporarily in my garden at South Pasadena.Files
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Additional details
- Eprint ID
- 3956
- Resolver ID
- CaltechAUTHORS:HALpnas24a
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2006-07-20Created from EPrint's datestamp field
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2019-10-02Created from EPrint's last_modified field