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Definition of Spectroheliograph
1. n. An apparatus for making spectroheliograms, consisting of a spectroscopic camera used in combination with a telescope, and provided with clockwork for moving the sun's image across the slit.
Definition of Spectroheliograph
1. Noun. (astronomy) an instrument that produced monochromatic photographs of the sun using light at a selected wavelength ¹
¹ Source: wiktionary.com