From: "Robert Dorr" <[email protected]> Sent: Friday, October 24, 2014 5:51:57 PM
If you measured at 2.5u you would be dealing with IR directly emitted from the interior of the hot cat because at that wavelength the alumina would be somewhat transparent to IR. Measuring at the wavelengths they did the IR cameras were only reading the surface temperature because of aluminas's opaqueness at wavelengths above approximately 3.5u. Almost everyone gets hung up on the visible wavelength pictures that were published in the report. They bear almost no relation to what the IR cameras were observing. Robert Dorr - - - - This was one of the sections where they were talking over each other. I couldn't really tell if the Williamson guy was warning AGAINST using 2.5u, or recommending FOR it!!!
