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It is so nice to have this list back. Thank you ,Steve.
We are searching for a filter that reads UV levels. We have a wonderful
sensor that reads light output, however for alt. photo processes, everything
we do is with UV light sensitive materials. (photopolymer plates, photo litho
plates, photogravure, etc.) We briefly thought the sensor we have was
reading Black Light UV output as the same as outdoor indirect UV light
output, but the test that indicated that must have been done at some
serendipitous conjunction between our black light and the ozone layer.
Recent tests have shown the two to be quite different. Common sense tells me
that if I could block everything but UV, I could get accurate readings from
my sensor under Blacklight ( for ease of test exposures) that would translate
exactlly to outdoor UV, which we are using for large (3ft by 4ft) plates.
So, has anyone got a lead on an inexpensive photo or optic filter that blocks
everything but UV?? Or perhaps some suggestions of where to search out such
an animal???
Thanks in advance,
Janet Flohr, Hare and Hound Press
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cheers henk