Noise cancellation by overlapping images

[nomel]

I've never noticed this forum section before! Already posted this in the G section, but this is a better spot for it. And all you EOS guy's...don't make fun of our high noise cameras! :P

http://evicted.org/~nomel/digicam/noise.html

[dtrayers]

Stacking images is a common technique in astrophotography:

http://www.astropix.com/HTML/J_DIGIT/PSALIGN.HTM