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Overhead Aurora - Corona Colors (May 10, 2024).jpg

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An outburst of a substorm during the great May 10, 2024 display of Northern Lights, here creating an overhead corona with rays converging to the magnetic zenith (south of the true zenith), and amid clouds. The rays show a rich mix of oxygen greens and reds, as well as nitrogen blues blending to create purples. Some green and red are mixing to make yellows.

Arcturus is below the zenith point. The constellation of Corona Borealis (fittingly!) is left of the convergence point.

This is a single 4-second exposure with the Laowa 15mm lens at f/2.8 on the Canon Ra at ISO 1600. Taken from home in southern Alberta, Canada.
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An outburst of a substorm during the great May 10, 2024 display of Northern Lights, here creating an overhead corona with rays converging to the magnetic zenith (south of the true zenith), and amid clouds. The rays show a rich mix of oxygen greens and reds, as well as nitrogen blues blending to create purples. Some green and red are mixing to make yellows. <br /> <br /> Arcturus is below the zenith point. The constellation of Corona Borealis (fittingly!) is left of the convergence point. <br /> <br /> This is a single 4-second exposure with the Laowa 15mm lens at f/2.8 on the Canon Ra at ISO 1600. Taken from home in southern Alberta, Canada.