Flat /raid/aavsonet/bsm_tx/200902/FlatB.fits Flat /raid/aavsonet/bsm_tx/200902/FlatC.fits Flat /raid/aavsonet/bsm_tx/200902/FlatI.fits Flat /raid/aavsonet/bsm_tx/200902/FlatR.fits Flat /raid/aavsonet/bsm_tx/200902/FlatV.fits