coronagraph

or co·ro·no·graph

[ kuh-roh-nuh-graf, -grahf ]

noun

, Astronomy.

1. an instrument for observing and photographing the sun's corona, consisting of a telescope fitted with lenses, filters, and diaphragms that simulate an eclipse.

coronagraph

/ -ˌɡræf; kəˈrəʊnəˌɡrɑːf /

noun

1. an optical instrument used to simulate an eclipse of the sun so that the faint solar corona can be studied

Other Words From

• co·ro·na·graph·ic [k, uh, -roh-n, uh, -, graf, -ik], adjective

Word History and Origins

Origin of coronagraph¹

1885–90; earlier coronograph. See corona, -graph

Example Sentences

The camera will also be able to see objects in the Kuiper Belt at the edge of the solar system and is equipped with a coronagraph, which can block light from a star to reveal details of dimmer exoplanets orbiting it.

From Science News