From AMS Glossary
(Redirected from Spectrohelioscope)
An instrument for taking photographs (spectroheliograms) of an image of the sun in monochromatic light.
The wavelength of light chosen for this purpose corresponds to one of the Fraunhofer lines, usually the light of hydrogen and/or ionized calcium. A similar instrument used for visual, instead of photographic, observations is the spectrohelioscope.