Flat /raid/aavsonet/oc61/200403/FlatB.fits
Flat /raid/aavsonet/oc61/200403/FlatSG.fits
Flat /raid/aavsonet/oc61/200403/FlatSI.fits
Flat /raid/aavsonet/oc61/200403/FlatSR.fits
Flat /raid/aavsonet/oc61/200403/FlatV.fits