SPECTROHELIOGRAPH

Spec′tro‐he″li‐o‐graph (?), n. (Astrophysics) 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. — Spec′tro‐he′li‐o‐graph″ic (#), a.