The Cathedral of Évora with a Moon Green Flash


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In this picture captured from Évora, we can see the Moon rise one day after it reach is fullness. This first Full Moon of the year is well known as the Wolf Moon. At the left and in comparing with this big Moon captured with a 560mm telescope 2.4km away from the local, we can see the top of Évora´s Cathedral (Portuguese: Sé de Évora), that is one of the oldest and most important monuments in the city of Évora, declared a World Heritage Site by UNESCO in 1988. Dated from 12th century, It is the largest of the mediaeval cathedrals in Portugal, and one of its best examples of Gothic architecture. Regarding this almost Full Moon, we can see a top dispersion that creates normally a green rim. But a more powerful mirage seems to vertically magnified the rim into a green flash, visible in the top limb of the Moon.

More info about a Green Rim: http://www.atoptics.co.uk/atoptics/gf15.htm  | Canon 50D – ISO1600; Exp. 1/10 secs. f/7 at 560mm ( Astro Professional APO ED80) single exposure taken in 05/01/2015 at 18h14m.

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