Definitions for "Coronagraph"
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.
A telescope that blocks out the Sun with a black disk so that its corona is visible
An instrument that makes it possible to observe the corona at times other than during an eclipse. A simple lens focuses the Sun onto a disk that blocks the light from the solar disk, providing an artificial eclipse. This image of the Sun is from the SOHO/LASCO coronagraph instrument.
Keywords:  'dec, declination
Declination ('Dec')