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coronagraph

   Also found in: Encyclopedia, Wikipedia 0.04 sec.
co·ro·na·graph also co·ro·no·graph  (k-rn-grf)
n.
A telescope or an attachment for a telescope equipped with a disk that blacks out most of the sun, used to photograph the sun's corona.
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Solar-B doesn't have a coronagraph to artificially mimic solar eclipses, leaving that to SOHO and STEREO.
The sun's halo in 3-D: new perspectives on solar explosions by Cowen, Ron / Science News
Combining adaptive optics with coronagraphs, devices that blot out the bright light of a parent star, will further hasten the discovery, Jaywardhana adds.
Are pictures of extrasolar planets in the offing? (Astronomy) by Science News
To view these wispy inflows at the sun's periphery, Sheeley and Wang used a coronagraph, a device that blocks the bright light from the sun's visible surface.
Observing the sun's magnetic pull. (Astronomy) by Science News
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