Black-eyed Susan - Rudbeckia hirta in reflected ultraviolet photography X

Today outside shots of a flower originating from the USA Prairie, a Black-eyed Susan - Rudbeckia hirta in reflected ultraviolet photography using my "work horse" UV filter, the Baader-U filter. All shots were done at f8. Lens was a rather rare Ultra Achromatic Takumar 4.5/85mm quartz fluorite lens. Light source was afternoon sunlight.

[click on image to see a larger one]

Human vision:
 

Reflected UV:
 

Diptych of human vision, reflected UV (left to right, top to bottom):
 

This flower shows a very prominent UV bullseye pattern, as its petals are very UV bright (around 365nm) to about the middle and its center is very UV dark, and all this gets nicely visible.

I have previously written about that flower HERE
 
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