coronagraph
noun
co·ro·na·graph
kə-ˈrō-nə-ˌgraf 
variants
or less commonly coronograph
plural coronagraphs also coronographs
: a telescope for observation of a star's corona
The American spacecraft was to carry the solar coronagraph, the only instrument on the mission capable of imaging the sun's polar regions …—
M. Mitchell Waldrop
M. Mitchell WaldropUsing an instrument called a coronagraph, the astronomers can block a star's light, to catch the dim glow of dark matter that may surround it.—Jonathan Weiner
Jonathan WeinerExamples of coronagraph in a Sentence
Recent Examples on the Web
Those who do not want to miss the show can follow the comet in images from the Solar and Heliospheric Observatory’s Lasco C3 coronagraph, or consult the IAU Minor Planet Center or the Comet OBServation (COBS) database.
—Marta Musso, WIRED, 11 Jan. 2025
Several missions have studied the sun and created artificial eclipses, including the ESA and NASA's Solar Terrestrial Relations Observatory (STEREO) mission that used a coronagraph to block the sun.
—Chandelis Duster, NPR, 21 Dec. 2024
That creates a lot of stray light, so the coronagraphs are enlarged to ensure bright sunlight cannot enter their telescopes.
—Jamie Carter, Forbes, 3 Dec. 2024
Two satellites fly in formation to form an external coronagraph in space, with one satellite eclipsing the sun to allow the second to study the solar corona, the scorching and dynamic region of the sun's atmosphere that is typically obscured by the bright light of the sun's disk.
—Jamie Carter, Forbes, 3 Dec. 2024
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Marta Musso, WIRED, 11 Jan. 2025
Several missions have studied the sun and created artificial eclipses, including the ESA and NASA's Solar Terrestrial Relations Observatory (STEREO) mission that used a coronagraph to block the sun.
—Chandelis Duster, NPR, 21 Dec. 2024
That creates a lot of stray light, so the coronagraphs are enlarged to ensure bright sunlight cannot enter their telescopes.
—Jamie Carter, Forbes, 3 Dec. 2024
Two satellites fly in formation to form an external coronagraph in space, with one satellite eclipsing the sun to allow the second to study the solar corona, the scorching and dynamic region of the sun's atmosphere that is typically obscured by the bright light of the sun's disk.
—Jamie Carter, Forbes, 3 Dec. 2024
See all Example Sentences for coronagraph
Dictionary Entries Near coronagraph
Cite this Entry
“Coronagraph.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/coronagraph. Accessed 7 Feb. 2025.
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