what i did was just take a long exposure through a camera ..
my box camera has a time-setting, so i opened the shutter
and left it for about 1/2 hour-40 mins ..
the negatives ( or positives if i contact print a negative this way )
are kind of delicate. the ones i fixed were in a water bath first
then partially exhausted speed fixer and the images bleached quite badly.
i have a recipe for a weak hypo bath for sun prints someone gave me
that i will use next. i haven't had time to make more exposures to test
the hypo ...