Flat /raid/aavsonet/bsm_tx/200826/FlatB.fits Flat /raid/aavsonet/bsm_tx/200826/FlatC.fits Flat /raid/aavsonet/bsm_tx/200826/FlatI.fits Flat /raid/aavsonet/bsm_tx/200826/FlatR.fits Flat /raid/aavsonet/bsm_tx/200826/FlatV.fits