Flat /raid/aavsonet/bsm_tx/200426/FlatB.fits Flat /raid/aavsonet/bsm_tx/200426/FlatC.fits Flat /raid/aavsonet/bsm_tx/200426/FlatI.fits Flat /raid/aavsonet/bsm_tx/200426/FlatR.fits Flat /raid/aavsonet/bsm_tx/200426/FlatV.fits