Four rockets launched tonight into the aurora from Poker Flat Research Range in Alaska. The rockets studied mesospheric inversion layers and winds and the upper atmospheres response to auroral precipitation. Four launches within 30 minutes, two of which released trimethyl aluminum trails, was quite spectacular to watch. The smoke trail is from another rocket launched 1 minute prior, and the falling streak in the wider image is the first stage from that rocket falling back down.

Wider image done with a Nikon D810 and a 14mm f/2.8 lens, ISO 800, 15 seconds. The narrower image done with a Nikon D610 through a 24mm f/3.5 tilt/shift lens shifted up to preserve perspective, ISO 3200, 15 seconds.

February 4, 2015

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