coronagraph
/kəˈroʊnəˌɡræf/
noun
- A scientific instrument used to observe the Sun's corona by blocking the bright light from the Sun's surface.
- A special coronagraph on the spacecraft captured images of the Sun's outer atmosphere.
- The coronagraph allowed astronomers to study solar flares and coronal mass ejections.
- Using a coronagraph, scientists can see stars that are usually hidden by a star's glare.