Dusk to Dawn sky activity over Tombstone Territorial Park, Yukon, May 3/4, 2011.

This is how dark it got near the mid-night. Stars are trailing around the north celestial pole while aurora activity painted the sky in green.

I planned to capture aurora in the blue sky. According to Heavens Above, solar minimum altitude for May 4 was about –10 degrees at 02:09.

I was in Yukon over 2 weeks and only 2 nights of aurora, and my total driving from home to Yukon and back was over 7000km!

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