[alt-photo] Re: UV Point Light Source

[Tomas Sobota]

I have used a tanning lamp, Osram Vitalux, which is a 300W not too expensive
UV source. The catch is that it will cover only A3 size or thereabouts
unless you don't mind a long exposure time. It is safe to use, but it is not
a point source, since the interior of the lamp is a specular reflector. But
it might do for your needs.

Tom

On Sun, May 22, 2011 at 4:07 AM, Peter Friedrichsen <
pfriedrichsen at sympatico.ca> wrote:

>
> I am imaging onto some lumpy surfaces and want to retain the image
> sharpness when exposed onto it. The sun is great for this but it is not
> reliable here especially in the winter months. I even went so far as
> calculating the shadow sharpness of the sun based on the exposed surfaces
> distance from the negative, and that told me that I can image up to 900 dpi
> even if the negative is 1/8 inch away. The only thing I came up with so far
> is a naked xenon arc which is probably risky to use since I know those bulbs
> can sometimes explode violently without warning, and can also blow a big
> hole in the bank account. Any ideas?
>
>
> Peter Friedrichsen
>
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