Flat /raid/aavsonet/bsm_tx/200517/FlatB.fits Flat /raid/aavsonet/bsm_tx/200517/FlatC.fits Flat /raid/aavsonet/bsm_tx/200517/FlatI.fits Flat /raid/aavsonet/bsm_tx/200517/FlatR.fits Flat /raid/aavsonet/bsm_tx/200517/FlatV.fits