The photosphere emits far more radiant energy than does the chromosphere above it.How is it possible to image just the chromosphere from Earth?
A) It is necessary to wait for a solar eclipse during which the Moon just blocks the photosphere, leaving the edges of the chromosphere visible.
B) It is not necessary to wait for a natural eclipse. Standing on Earth's surface, it is possible to create an artificial eclipse just by holding a coin at the appropriate distance to cover the photosphere and leave the chromosphere's edges visible.
C) The photosphere emits a great deal of Hα radiation, while the chromosphere does not. So one images the chromosphere through a filter that blocks Hα.
D) The photosphere emits very little Hα radiation, while the chromosphere emits a great deal. So one images the chromosphere through a filter that passes Hα.
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