Spring Flowers 2013 - Cerco 94mm Quartz Fluorite lens for reflected ultraviolet photography

Today about some early spring flowers, Winter Aconite and Bellis perennis in reflected ultraviolet photography using my "work horse" UV filter, the Baader-U filter, plus a new filter, consisting of a Schott UG1 + S8612 stack. Lens was a CERCO 94mm quartz fluorite lens. Light source was the last sunrays of that wonderful spring Sunday. All shots were done at about f5.6. So, on to the results now...

[click on image to see a larger one]

*** Bellis perennis ***

Visible light image:
 

UV image using Baader-U filter (approx. 320-395nm, effective peak approx. 375nm):
 

UV image using Schott filter stack (approx. 320-400nm, effective peak approx. 375nm) but showing some bluish leak which the Baader filter does not have :
 

VIS-IR image using no filter:
 

*** Winter Aconite ***

Visible light image:
 

UV image using Baader-U filter (approx. 320-395nm, effective peak approx. 375nm):
 

UV image using Schott filter stack (approx. 320-400nm, effective peak approx. 375nm) but showing some bluish leak which the Baader filter does not have:
 

VIS-IR image using no filter:
 

So, I hope you enjoy seeing some early spring flowers!


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