Flat /raid/aavsonet/bsm_tx/200710/FlatB.fits
Flat /raid/aavsonet/bsm_tx/200710/FlatC.fits
Flat /raid/aavsonet/bsm_tx/200710/FlatI.fits
Flat /raid/aavsonet/bsm_tx/200710/FlatR.fits
Flat /raid/aavsonet/bsm_tx/200710/FlatV.fits