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Rudbeckia fulgida var deamii in visible and UV light
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PostPosted: Sun Aug 12, 2012 6:53 pm    Post subject: Rudbeckia fulgida var deamii in visible and UV light Reply with quote
Today about another attractive flower, for humans as well as bees: Rudbeckia fulgida var. deamii. Shot outside with natural light (blue sky, no direct sun) in visible and ultraviolet light, using the Baader-U UV pass filter, a CERCO 94mm quartz flourite lens and my UV sensitive camera.

Visible light image:


Ultraviolet (UV) light image:


Diptych VIS - UV:


The petals of this R. deamii variant shows a very distinct "bullseye" UV pattern, invisible for us humans, as many other Rudbeckia species do. Also this one is reflecting around 365nm at its petal tips and is creating a very distinct UV nectar guide for its pollinators.


PostPosted: Mon Aug 13, 2012 6:07 am    Post subject: Reply with quote
Wow, that's amazing! I didn't know the difference between what we see and what a bee sees can be so big.


PostPosted: Mon Aug 13, 2012 6:46 am    Post subject: Reply with quote
Yes, it indeed is. My Blog has many more examples for that [url]uvir.eu[/url]
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