Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • 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.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A telescope that has an attachment which blocks out the direct light from the sun or other star, allowing examination of the corona and the detection of exoplanets

Etymologies

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Examples

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  • A coronagraph is a telescopic attachment designed specifically to block out the harsh, direct light from a star, so that nearby objects can be resolved without burning out the telescope's optics.

    November 14, 2008