Flat /raid/aavsonet/bsm_tx/200827/FlatB.fits Flat /raid/aavsonet/bsm_tx/200827/FlatC.fits Flat /raid/aavsonet/bsm_tx/200827/FlatI.fits Flat /raid/aavsonet/bsm_tx/200827/FlatR.fits Flat /raid/aavsonet/bsm_tx/200827/FlatV.fits