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12-13-2011, 09:22 AM #1
for anyone interested in space weather
meant to post this in the eclipse thread but some of you may find this site interesting
http://www.spaceweather.com/You are the mission Bob.
12-22-2011, 06:40 AM #2
beer can camera
here is a link to the pictures of the sun arcs using a pin hole camera made from a beer can
http://spaceweather.com/submissions/...1324480148.jpgYou are the mission Bob.
12-23-2011, 07:58 PM #3
Those pinhole images have always confused me a little. I know the photo paper I usually use (Ilford Multi IV) starts to get some reciprocity failure at around a minute or so...I'm curious as to how a 6 month exposure worked that well. But they're beautiful images!