Flat /raid/aavsonet/bsm_nh2/200922/flatB_bin2.fits Flat /raid/aavsonet/bsm_nh2/200922/flatI_bin2.fits Flat /raid/aavsonet/bsm_nh2/200922/flatSR_bin2.fits Flat /raid/aavsonet/bsm_nh2/200922/flatV_bin2.fits