Flat /raid/aavsonet/bsm_tx/200922/FlatB.fits Flat /raid/aavsonet/bsm_tx/200922/FlatC.fits Flat /raid/aavsonet/bsm_tx/200922/FlatI.fits Flat /raid/aavsonet/bsm_tx/200922/FlatR.fits Flat /raid/aavsonet/bsm_tx/200922/FlatV.fits