coronagraph

noun
co·​ro·​na·​graph | \ kə-ˈrō-nə-ˌgraf How to pronounce coronagraph (audio) \
variants: or less commonly coronograph

Definition of coronagraph

: a telescope for observation of the sun's corona

Examples of coronagraph in a Sentence

Recent Examples on the Web

Due to budget concerns, NASA has been looking at ways to reduce the cost of the coronagraph by reducing the number of masks and filters the instrument uses, according to Space News. Loren Grush, The Verge, "A cold ‘super-Earth’ may live around a nearby star," 14 Nov. 2018 But Ribas says a coronagraph is the most certain way to see this world. Loren Grush, The Verge, "A cold ‘super-Earth’ may live around a nearby star," 14 Nov. 2018 The space telescope could potentially study large planets using a special instrument known as a coronagraph, which helps to block out the light of stars. Loren Grush, The Verge, "A cold ‘super-Earth’ may live around a nearby star," 14 Nov. 2018 The star is dark due to a coronagraph, technology that allows the telescope to mask the light of the star. Sarah Gray, Fortune, "Watch Incredible, First-Ever Footage of a Planet Being Born," 5 July 2018 The planet stands clearly out, visible as a bright point to the right of the centre of the image, which is blacked out by the coronagraph mask used to block the blinding light of the central star. Sarah Gray, Fortune, "Watch Incredible, First-Ever Footage of a Planet Being Born," 5 July 2018 The planet stands clearly out, visible as a bright point to the right of the centre of the image, which is blacked out by the coronagraph mask used to block the blinding light of the central star. Sarah Gray, Fortune, "Watch Incredible, First-Ever Footage of a Planet Being Born," 5 July 2018 The planet stands clearly out, visible as a bright point to the right of the centre of the image, which is blacked out by the coronagraph mask used to block the blinding light of the central star. Sarah Gray, Fortune, "Watch Incredible, First-Ever Footage of a Planet Being Born," 5 July 2018 The planet stands clearly out, visible as a bright point to the right of the centre of the image, which is blacked out by the coronagraph mask used to block the blinding light of the central star. Sarah Gray, Fortune, "Watch Incredible, First-Ever Footage of a Planet Being Born," 5 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'coronagraph.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of coronagraph

1885, in the meaning defined above

History and Etymology for coronagraph

corona + -graph

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Time Traveler for coronagraph

The first known use of coronagraph was in 1885

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More from Merriam-Webster on coronagraph

Britannica.com: Encyclopedia article about coronagraph

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