| Term: | coronagraph |
| Definition: |
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. |
| Term: | coronagraph |
| Definition: |
A telescope, or attachment to a telescope, that blocks the light of a star (Sun) inside the instrument field of view so that regions near the star (Sun), particularly the atmosphere or solar corona, can be viewed |