coronagraph

noun
co·​ro·​na·​graph | \kə-ˈrō-nə-ˌgraf \
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

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 So Widemann and his colleagues built their own coronagraphs. Dave Mosher, Popular Mechanics, "How the Venus Transit Will Help Us Hunt New Earths," 4 June 2012 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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Last Updated

26 Oct 2018

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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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