I have started to learn how to use Processing to handle the PC side of the image processing.
The the source code see http://www.gr0b.com/0_o/updates/processing
The hardware is the same as in pyroelectric infrared sensors project with the exception of a little playdoh around the sensor to act as a lens the rest of the changes are software changes.
Here are some screenshots of the application after doing a full sweep. Can you see me on the right and the light on the left?
Each square is 5 degrees in size. About 2 mins to capture.
from side to side it is a total of 180 degrees and 60 degrees high