Alternative definitions (1), class: vernacular (0)
Term: coronagraph

An optical device that makes it possible to observe the corona at times other than during an eclipse. A simple lens focuses the Sun onto an occulting disk that prevents the light from the solar disk from proceeding farther along the optical path, effectively providing an artificial eclipse.

Created 2023.04.16
Last Modified 2023.04.16
Contributed by Ryan McGranaghan