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
But coronagraphs can block important parts of the solar atmosphere near the surface.
—Aaron Shattuck, Scientific American, 25 June 2024
The coronagraph will allow scientists to better study the sun’s outer atmosphere, called the corona, where coronal mass ejections can be observed.
—Kasha Patel, Washington Post, 25 June 2024
The coronagraph will provide continuous observations of the solar corona, or the hot outer layer of the sun’s atmosphere, which is where space weather events originate, said Elsayed Talaat, director of NOAA’s Office of Space Weather Observations.
—Ashley Strickland, CNN, 25 June 2024
The standard solution is to employ a device called a coronagraph.
—Dan Falk, Smithsonian Magazine, 29 Jan. 2024
That’s because the wave nature of light means that some excess light from the host star will always spill out past the coronagraph, degrading the image.
—Dan Falk, Smithsonian Magazine, 29 Jan. 2024
This spacecraft will travel to an orbit around the L1 Lagrange point nearly a million miles (1.5 million kilometers) on the Sunward side of the Earth, where Aditya-L1 will use a solar telescope and coronagraph to observe the Sun and a suite of sensors to measure the solar wind.
—Stephen Clark, Ars Technica, 31 Aug. 2023
But a separate spacecraft is a much more complex and unwieldy starlight-suppression solution than a coronagraph and thus is unlikely to be part of HWO from the get-go.
—Jonathan O'Callaghan, Scientific American, 6 Dec. 2023
The performance of Roman’s coronagraph will provide crucial information for HWO’s grander aspirations.
—Jonathan O'Callaghan, Scientific American, 6 Dec. 2023
Aaron Shattuck, Scientific American, 25 June 2024
The coronagraph will allow scientists to better study the sun’s outer atmosphere, called the corona, where coronal mass ejections can be observed.
—Kasha Patel, Washington Post, 25 June 2024
The coronagraph will provide continuous observations of the solar corona, or the hot outer layer of the sun’s atmosphere, which is where space weather events originate, said Elsayed Talaat, director of NOAA’s Office of Space Weather Observations.
—Ashley Strickland, CNN, 25 June 2024
The standard solution is to employ a device called a coronagraph.
—Dan Falk, Smithsonian Magazine, 29 Jan. 2024
That’s because the wave nature of light means that some excess light from the host star will always spill out past the coronagraph, degrading the image.
—Dan Falk, Smithsonian Magazine, 29 Jan. 2024
This spacecraft will travel to an orbit around the L1 Lagrange point nearly a million miles (1.5 million kilometers) on the Sunward side of the Earth, where Aditya-L1 will use a solar telescope and coronagraph to observe the Sun and a suite of sensors to measure the solar wind.
—Stephen Clark, Ars Technica, 31 Aug. 2023
But a separate spacecraft is a much more complex and unwieldy starlight-suppression solution than a coronagraph and thus is unlikely to be part of HWO from the get-go.
—Jonathan O'Callaghan, Scientific American, 6 Dec. 2023
The performance of Roman’s coronagraph will provide crucial information for HWO’s grander aspirations.
—Jonathan O'Callaghan, Scientific American, 6 Dec. 2023
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'coronagraph.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near coronagraph
Cite this Entry
“Coronagraph.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/coronagraph. Accessed 7 Jul. 2024.
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