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domingo, 10 de dezembro de 2017

Astronomy picture of the day - 2017 December 10 - In Green Company: Aurora over Norway

See Explanation.  Clicking on the picture will download
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In Green Company: Aurora over Norway 
Image Credit & Copyright: Max Rive
Explanation: Raise your arms if you see an aurora. With those instructions, two nights went by with, well, clouds -- mostly. On the third night of returning to same peaks, though, the sky not only cleared up but lit up with a spectacular auroral display. Arms went high in the air, patience and experience paid off, and the creative featured image was captured as a composite from three separate exposures. The setting is a summit of the Austnesfjorden fjord close to the town of Svolvear on the Lofoten islands in northern Norway. The time was early 2014. Although our Sun is nearing Solar Minimum and hence showing relatively little surface activity, holes in the upper corona have provided some niceauroral displays over the last few months.