The Dancing Northern Lights


A still frame from a 865-frame time-lapse movie taken the morning of Sept. 9, 2015 from the back deck, using the Nikon D750 and 24mm lens for 2-second exposures for a fast cadence. Focus is soft.

The lights came out and danced in my sky in the early morning hours.

The early warning signs weren’t calling for anything too impressive for a display last night, September 8/9, but the sky surprised us with a fantastic display of Northern lights.

I shot with one camera – it was very late, or very early! – but shot enough frames to create this short 1.5-minute music video.

I photographed the sequence with a single fixed-camera aimed east toward a bright auroral curtain, showing fast pulsing forms common to the later stages of a substorm. But then a new bright curtain sweeps in from the north and the display brightens even more in a new substorm. The display then fades.

The exposures were taken over an hour from 1:30 a.m. to 2:30 a.m. MDT. Each was a 2-second exposure with an interval of 2 seconds, shot with the Nikon D750 at ISO 3200 and Sigma 24mm lens at f/2, for a total of just over 850 frames.

Music is my Adi Goldstein at AGSoundtrax.com.

— Alan, September 9, 2015 / © 2015 Alan Dyer / www.amazingsky.com

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