Does this image show focus shift? It seems like the infrared is in focus while the visible is not.
see http://www.apogeephoto.com/mag1-4/mag1-4mfir.shtml for a discussion:
"light waves of different wavelengths do not focus on the same plane when passing through a simple lens"
This may be a good reason not to use the bifocal filter system as we're currently prototyping with the Near-Infrared Camera. An alternative is the Stereo Camera using two synchronized cameras on the same balloon.