refima,f,a,,,,Name of input reference file
nopsfs,i,a,,,,Number of PSF's to be interpolated
psfwavs,f,a,,,,Name of table of wavelengths of the PSF's to be interpolated
psfims,f,a,,,,List of names of the PSF images for interpolation
sliwid,r,a,,,,Width of slit (arcsec)
pixwid,r,a,,,,Width of pixels (arcsec)
subsam,r,a,,,,Number of (subsampled) pixels in PSF image per reference image pixel
cenoff,r,a,,,,Offset of centre of slit from X peak of PSF (arcsec)
psfpos,r,a,,,,Required Y value for PSF centre
outpsf,f,a,,,,Name of output PSF image