Camera tripod mounted in darkroom w/ all lights but enlarger out and shutter opened on bulb using remote for just over 5 minutes (noise reduction turned on). One pop of off camera flash fired at 1/4 power during the exposure. Color balance altered in RAW conversion to simulate safelight (actual safelight needs a new bulb). Negative in enlarger shot with Nikomat FTN and Nikkor 50mm f/2 on Kodak Tri-X. A straight scan of the negative is in my portfolio and titled Ghosts ( http://www.usefilm.com/image/322963.html) if anyone's interested.
wonderful set up,very great capture,i like the way you controlled the timing and out you got out of that for shuch very limited source of light,very best regards.