A reddish blue moon
Taken by Eduardo Schaberger Poupeau on August 21, 2021 @
Rafaela, Santa Fe, Argentina
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The second full moon in a calendar month is traditionally known as the "blue moon," but the third full moon in a season is also called by the same name (seasonal blue moon).
This name has nothing to do with the color of the moon, in fact, the color of the moon can be misleading, since if we observe it when it is close to the horizon we can see it in a reddish hue. This happens because the light from the moon has to travel a longer distance through our atmosphere and the shorter wavelengths, corresponding to blue, are scattered and in this way we get more of the longer wavelengths that correspond to the Red.
Dust and pollution can also contribute to this reddish hue.
Technically in my country, the full moon happened at 9:01 a.m. on August 22, with the moon below the horizon. For that reason I decided to photograph it on the 21st, at 6:50 p.m. with 99.5% of its surface illuminated.
In the photo you can see in addition to the moon, hundreds of birds returning to their nests, after a day in search of food in the fields near my city
Photographer's website:
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