Solargrahpy

It looks interesting indeed. Could you elaborate a bit more? In other words, how did you do it?
Thanks
Thomas

a rainbow ......

Very interesting!! Will you attempt more?

Thomas, I made a pinholecamera from a filmcan and taped it to my balcony, left it for about four days(eagerly counting the first week and then I forgot about it...).
Actually I made four, first two I put in fixer and this one is a straight scan. The rainbow is actually the sun going up and down and the little gaps are from days when it's been cloudy! See more at http://www.solargraphy.com/
Colin, yes, I have big plans on a grander scale!

Thanks Sarah. I'd like to try it, but here where I live I would only get gaps this time of the year .