Flat /raid/aavsonet/bsm_tx/200929/FlatB.fits Flat /raid/aavsonet/bsm_tx/200929/FlatC.fits Flat /raid/aavsonet/bsm_tx/200929/FlatI.fits Flat /raid/aavsonet/bsm_tx/200929/FlatR.fits Flat /raid/aavsonet/bsm_tx/200929/FlatV.fits