Aurora
Taken by Robert Postma on December 7, 2014 @ Old Crow, Yukon, Canada
Click photo for larger image
  Camera Used: Canon Canon EOS-1Ds Mark II
Exposure Time: 10/1
Aperture: f/2.8
ISO: 800
Date Taken: 2014:12:07 13:51:33
  
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Details:
In the heavens above the tiny hamlet of Old Crow in the Yukon Territory, the northern lights make a rather dramatic appearance this weekend.
Photographer's website:
http://www.distanthorizons.ca
Comments
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What a stunning image, thank you for sharing. :-)

Can anyone please tell us what element produces a purple aurora, we see plenty of green and some pink ones…but this purple is just gorgeous!!!
Posted by noeleen22 2014-12-07 23:45:05
Noeleen22, the purplish-blue colour in some aurorae comes from ionized molecular Nitrogen (N2+).
Posted by raybutler 2014-12-08 04:45:41
The color has much more to do with the white balance on your camera, whether it is set automatically or manually. You can bring out the red or purple this way compared to what your eye sees in real time. Many cameras automatically skew their balance toward purple when photographing the sky at night. If you doubt this, do two photographs--one with auto white balance and one with white balance manually set to daylight. Then experiment with other manual white balance settings.
Posted by jjjrs5 2014-12-08 07:14:39
Thank you Ray and jjjrs5 for taking the time to answer my question :-)
Posted by noeleen22 2014-12-08 17:56:06
As Noeleen22 said the purplish-blue color in some aurorae comes from ionized molecular Nitrogen (N2+).
Usually early in the evening or or early in the morning when sun is hitting upper atmosphere, but still didnt come above horizon.Or august,sep, march,april when we dont have real dark sky. (Astronomical twilight)

Camera see those and red colors better then our eyes, cause our eye has 1/10s shutter speed, but we are leaving camera open for multiple sec. Also our eyes has 45% of green and camera is more sensitive on red.

But in all honesty,(No a offence) this image is enhance in post production also..
Posted by Sunshine78 2014-12-08 18:55:27
It is truly an amazing purple colour!!!
Posted by catalin 2014-12-09 17:28:40
We were known IR Cut filter located in front of the sensor reduced the Red color to the Purple color. If you want to shoot real color of Aurora, we should take this filter away.
Posted by rakudaoyaji 2014-12-11 03:15:48
 
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