Flat /raid/aavsonet/bsm_tx/200715/FlatB.fits Flat /raid/aavsonet/bsm_tx/200715/FlatC.fits Flat /raid/aavsonet/bsm_tx/200715/FlatI.fits Flat /raid/aavsonet/bsm_tx/200715/FlatR.fits Flat /raid/aavsonet/bsm_tx/200715/FlatV.fits