coronagraph
Use Coronagraph in a sentence
nəˌgræf, -ˌgrɑf noun Astronomy.
an instrument for observing and photographing the sun's corona, consisting of a telescope fitted with lenses, filters, and diaphragms that simulate an eclipse.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
coronagraph or coronograph (kəˈrəʊnəˌɡrɑːf, -ˌɡræf, kəˈrəʊnəˌɡrɑːf, -ˌɡræf) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —n | |
| an optical instrument used to simulate an eclipse of the sun so that the faint solar corona can be studied | |
| coronograph or coronograph | |
| —n | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Coronagraph
is always a great word to know.
So is slumgullion. Does it mean:
| a stew of meat, vegetables, potatoes, etc. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
Encyclopedia Britannica
Encyclopedia
coronagraph
telescope that blocks the light of a star inside the instrument so that objects close to the star can be observed. It was invented in 1930 by the French astronomer Bernard Lyot and was used to observe the Sun's corona and prominences.
Learn more about coronagraph with a free trial on Britannica.com.
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
They're building a super adaptive optics camera with a coronagraph that blocks a star's light in order to image its planet.
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