I have to shoot off to work in the next hour or so, but before I do I thought I would put up some thermal infrared images taken last night showing the heat flow over a few hours of Andrews 25" obsession. I'll have a nibble at giving my interpretation of what is going on, but with consideration of the time I have, this is most likely to be incomplete.
Also... there are a few caveats implicit in FLIR images, so caution in advised in rushing to conclusions.
Anyhoo... here are the pics with time stamps and ambient temperatures added for context:
enjoy,
~c
http://i371.photobucket.com/albums/o...ne/IR_3702.jpg
http://i371.photobucket.com/albums/o...ne/IR_3704.jpg
http://i371.photobucket.com/albums/o...ne/IR_3705.jpg
http://i371.photobucket.com/albums/o...ne/IR_3707.jpg
http://i371.photobucket.com/albums/o...ne/IR_3708.jpg
http://i371.photobucket.com/albums/o...ne/IR_3710.jpg
http://i371.photobucket.com/albums/o...ne/IR_3714.jpg
http://i371.photobucket.com/albums/o...ne/IR_3718.jpg