Defaulted parameters

A number of parameters can only be defined when the PHOTOM program starts. They all have reasonable defaults, but if required can be changed before running the program. The way to set a new value for one of these is to use the keyword (the name by which the parameter is always referred to) on the command line, as in :

% photom usemags=f resfile=flux.dat

This outputs the values in photon counts (i.e. as modified by the BIASLE and PADU parameters) and writes the results of the analysis to the file flux.dat.