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Green Flash Sequence from Marathon Key15 viewsWe watch for it 6 times and saw it 3 times.
Canon Rebel XTi 55-200mm zoom with polarizers
(the polarizers were not needed I just didn't bother to take it off.
Set at 200mm f/5.6, iso200, 1/640 sec.
The "green flash" occurs because the atmosphere strongly refracts lights of objects low on the horizon, just like a prism. With red on the bottom and blue on the top.
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