I promised to explain what that relay system has to do with UV photography - now here some preliminary results showing that same system being used to simulated tetrachromatic vision, so here in the second and fourth image also UV will be shown (as blue).
[click on image to see a larger one]
Stay tuned, more will follow on that fascinating subject...
More info on this very interesting field may be found on my site http://www.pbase.com/kds315/uv_photos