northern lights
Taken by Jan Curtis on December 6, 2000 @
Fairbanks, Alaska
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Camera Used: Plustek OpticFilm 7200i
Exposure Time: Unavailable
Aperture: Unavailable
ISO: Unavailable
Date Taken: 2021:02:25 13:43:06
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Details:
The original northern lights film image taken circa 2000 (www.flickr.com/photos/79387036@N07/30705945030) is considerably enhanced in this post-processed revision to bring out the shadows and to reduce noise in the highlights. The original image is from a negative (Etkapress with iso=640) that was scanned at 7200 dpi without modification.
Green aurora is common at high latitudes (Fairbanks, Alaska is 64N). So when other colors appeared, I took a roll of exposures in a matter of minutes. In the age of film, the spectrum of color was not always captured or developed accurately. In this revision which occurred at the ending of twilight, I managed to record the top of the aurora lit by the last rays of the sun. That blue-purple is this resulting phenomena. Very occasionally, you can see yellow and pink in an Auroral display which are associated with only high solar activity as they are simply a mixture of red with green or blue.
I was surprised by the detail that was extracted in the shadows and actually like the graininess lit in part by the green aurora above. CHECKOUT the link above to compare with the original. Feedback is always appreciated.
For more about editing the aurora image see: salamapaja.fi/aurora-borealis/colors-of-northern-lights-d...
More on the colors of the northern lights see: www.researchgate.net/publication/233408329_The_Colors_of_...
Photographer's website:
No URL provided.
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