On the 21st June I set up my solargraph, this had a0.3mm laser drilled hole ( as supplied by the pinhole factory, also resistant to bird attack ( although I’ve had no problems previously)
It was sat on the end of my raspberry canes on the allotment.
On the 21st Dec I removed it , opened it up in a dark room with a red light and placed on Epson scanner, scanned at 1200dpi, in colour and saved as a .tif file for processing in Photoshop, see image below, had to repeat scan as first image contained some very strange artifacts, tinsely bits from scanning the Christmas card from Rosliston forestry centre!
Then it was processed in Photoshop CS6, first flipping horizontally to put image right way round and then inverting the played with levels, curves contrast and exposure, final image below, with camera view for comparison beside it. ( enlarge solar graph, shows detail better.)
Happy Solstice- Pete Hill