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EarthSky Community Photos
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Dr Ski
Valencia, Philippines
Valencia, Philippines
05/15/2019
09:20 pm
09:20 pm
Canon EOS M10
8omm, f8
0.8s, ISO400
Image cropped
Lots of optical phenomena tonight. Classic Lunar Corona, caused by moonlight diffracting thru water droplets in the clouds. The size of the corona depends on the size of the water drops. Not to be confused with the Lunar Halo, which has a radius of 22° due to REFRACTION of moonlight thru hexagonal ice crystals. There will be a quiz next Wednesday.
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