Can an electronic flash be used to expose cyanotypes?

[drgoose]

I was wondering since some wet plate portrait photographers use a ton of flash to iluminate their wet plate portraits, can repeated firings from an electronic flash at close range be used to expose cyanotypes? I guess I could just try but if someone has already tries to reinvent this wheel it is probably worth jus asking.


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[Rick A]

You need UV light for the exposure, and loads of it as the sensitizer is about a thousand times less sensitive than modern silver emulsion. Wet plate doesn't rely on UV light for exposure.
You can use an inexpensive quartz-halogen flood light or get one of these
http://www.lamptech.co.uk/Spec Sheets/Philips HPR125.htm

 

[Gerald C Koch]

You could try a sun/tanning lamp. Cyanotype paper is rather insensitive and you need quite a bit of UV radiation of the proper wavelenth.