After six months of fiddling, my infrared Raspberry Pi based camera is finished. Apart from a few software tweaks to interface properly with the mode switch, it's working perfectly, and runs for about three hours on the RS775-7504 battery.
UPDATE- some test photos are up here.
The photo above shows how things look through the three different filters. Here's a pano in pure infrared:
The PiBow-inspired case design is up on Thingiverse, with the preliminary lens assembly published on ShapeWays here and here.
Here's how the camera looks, and I'll be collecting more infrared photographs this weekend
Here's a brief explanation of what the filters do and what the sensor is capable of. Unfortunately not Predator style thermal imaging, but near infrared is still pretty interesting