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
On 4 November, NASA plans to launch the Coronal Diagnostic Experiment (CODEX), an instrument that will create eclipses on demand with a Sun-blocking device called a coronagraph.
—Byhannah Richter, science.org, 31 Oct. 2024
In the days before the comet became visible above the horizon, it was lost in the sun's glare but not to LASCO, which imaged it very close to the sun using its coronagraph disk to occult the sun's disk.
—Jamie Carter, Forbes, 16 Oct. 2024
The first thing is a bit of hardware called a coronagraph attached to your telescope.
—John Timmer, Ars Technica, 24 July 2024
Telescopes on Earth and satellites can use a coronagraph, an instrument that blocks the sun’s disk while leaving much of its atmosphere visible.
—Aaron Shattuck, Scientific American, 25 June 2024
See all Example Sentences for coronagraph 
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Byhannah Richter, science.org, 31 Oct. 2024
In the days before the comet became visible above the horizon, it was lost in the sun's glare but not to LASCO, which imaged it very close to the sun using its coronagraph disk to occult the sun's disk.
—Jamie Carter, Forbes, 16 Oct. 2024
The first thing is a bit of hardware called a coronagraph attached to your telescope.
—John Timmer, Ars Technica, 24 July 2024
Telescopes on Earth and satellites can use a coronagraph, an instrument that blocks the sun’s disk while leaving much of its atmosphere visible.
—Aaron Shattuck, Scientific American, 25 June 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 19 Nov. 2024.
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