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.
[Webster 1913 Suppl.]