layer of the emulsion is brushed onto the paper in subdued light
or a safe light.
have doubts about if the lighting is fogging your paper, take
a sheet which is coated with emulsion and has dried -
opaque object on it like a pair of scissors for some time -
say 10 min's and if there is an image left on the paper after
this time you will get some idea of how long you can leave the
paper out in the light for.
having said this the process is very tolerant and I have made
great cyanotypes under a tent in full sunlight at a fun