Two units were built. One covered the spectral region of 3 to 5 microns and second covered the spectral region of 8 to 11 microns. The lenslet optical arrays and actuation system were embedded in the closed cycle dewar and collected full hyperspectral data cubes.
Embedding the optics and mechanical actuation system in the cold stage of a closed cycle miniature dewar system was a significant challenge and PAT demonstrated that successfully. To our knowledge this has not been done in such a small package before now.
Athena was field tested and demonstrated that hyperspectral imaging using lenslet arrays can detect and identify gas phase chemical warfare agent from a standoff range of 1 Km.
This work lead to a follow-on program to build a prototype system, Helios, to mount on a miniature drone.
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