Here is another automated sequence, with the Aurora Cam the next night after the big November 9th display, while the Kp index was at 5.0 and going down. Started later at 10pm, this sequence shows the first row is considerably redder than the rest of the images (frame 22 is the neighbors light) and clearly shows that while a Kp of 5 is normally not visible as an Auroral glow, it can be seen when it is coming down from a much higher value, such as the night before at 8.

Enlargements from selected frames 0a and 12a for comparison, when the sky was nearly back to normal greyish.







Instrument:  16mm f/2.8 Zenitar Fisheye at f/2.8
Platform:   Aurora Cam with Robotic Barndoor
Film:  Konica 400
Exposure:  10 mins
Filters:  NONE
Location:  Payson, Arizona
Elevation:  5100 ft.
Sky:  Seeing 8/10, Transparency 7/10
Outside Temperature:  15 C
Processing: Photoshop CS
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