Flat /raid/aavsonet/oc61/200421/FlatB.fits Flat /raid/aavsonet/oc61/200421/FlatSG.fits Flat /raid/aavsonet/oc61/200421/FlatSI.fits Flat /raid/aavsonet/oc61/200421/FlatSR.fits Flat /raid/aavsonet/oc61/200421/FlatV.fits