[click on image to see a larger one]
Visual shot:

Simulated bee vison using XBV3 filter:

Simulated bee vison using XBV2 filter:

Simulated bee vison using XBV6 filter:

UV using Baader-U filter:

This flower has a very prominent UV pattern (365nm peak) on its UV-bright petal tips, that's why I like it as a standard test target a lot.
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