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How does the coronagraph work?

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A solid disk placed in front of the prime focus of the first telescope plays the part of the moon and eclipses the sun's image in the telescope so that only the outer layers of the sun's atmosphere are focused by the second telescope onto photographic film.

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Similar questions: How does the coronagraph focus on the outer ring of the sun? What does the disc in front of the first telescope do? [ Hide these questions ]

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