images,s,a,,,,List of images focus,s,h,"",,,Focus values corwidth,i,h,20,,,Correlation width level,r,h,0.5,,,Percent or fraction of peak for width measurement shifts,b,h,yes,,,"Compute shifts across the dispersion? " dispaxis,i,h,2,1,2,Dispersion axis (long slit only) nspectra,i,h,1,1,,Number of spectral samples (long slit only) ndisp,i,h,1,1,,Number of dispersion samples slit1,i,h,INDEF,,,Lower slit edge slit2,i,h,INDEF,,,"Upper slit edge " logfile,s,h,"logfile",,,"Logfile"