Shooting different wavebands using the same taking lens simultaneously

Today about a special contraption I have made, which allows to take images in different wavelengths, using the same lens simultaneously, and which even allows to compensate for focus shift within these wavebands.

[click on image gets you a larger image]

Here examples in visual light and reflected ultraviolet (UV) light, shot through the same taking lens. UV filter used was a stack of Schott UG + BG ionic glass filters. Sunlight was the light source as well as some help from a 365nm UV LED light.

I'm quite happy how well both the VIS an UV images are fitting in size:

I plan on revealing more about that solution later 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