Aurora Borealis Aurora Borealis 9.11.2004


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20:44 UT, where the green meets the red

Imaged with a Canon EOS 20D and EF-S 17-85mm IS USM lens. Exposure time was 30 seconds at f/4.0, focal length 17mm. Camera setting were manual exposure, 400ISO, daylight white balance. Image enhancements used were manual dark frame subtraction, curves, unsharp masking, brightness and contrast. Image was made smaller for the Web.


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All material Copyright © Jorma Koski, Anno Mundi 2004