[click on image to see a larger one]
Sanvitalia, visual shot:

Simulated bee vison using XBV2 filter:

UV using Baader-U filter:

UV using Jupiter-U filter:

So and here you have the full comparison as a tryptich VIS-UV-BV:

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