In Darkness: Africa Eclipse 2001
Photo Gallery
Totality in Zambia
by John Walker
Medium eclipse image: Slide 9
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A 1/4 second exposure begins to give a hint of the extent of the coronal streamers visible to the eye. The green cast of the corona is due to ionised atoms of iron which emit light in the green portion of the spectrum (principally the 530.3 nm forbidden line of Fe XIV).

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by John Walker
July, 2001