/iris/idl/msu/calibration/spectrograph_flats/iris_sgflat_calc_fuv.pro
/iris/idl/msu/calibration/spectrograph_flats/iris_sgflat_calc_nuv.pro
/iris/idl/msu/calibration/spectrograph_flats/iris_sgflat_getdata.pro
/iris/idl/msu/calibration/spectrograph_flats/iris_sgflat_prep.pro