Flat /raid/aavsonet/bsm_tx/200513/FlatB.fits Flat /raid/aavsonet/bsm_tx/200513/FlatC.fits Flat /raid/aavsonet/bsm_tx/200513/FlatI.fits Flat /raid/aavsonet/bsm_tx/200513/FlatR.fits Flat /raid/aavsonet/bsm_tx/200513/FlatV.fits