Flat /raid/aavsonet/bsm_tx/200429/FlatB.fits Flat /raid/aavsonet/bsm_tx/200429/FlatC.fits Flat /raid/aavsonet/bsm_tx/200429/FlatI.fits Flat /raid/aavsonet/bsm_tx/200429/FlatR.fits Flat /raid/aavsonet/bsm_tx/200429/FlatV.fits