run evselect to make banana_fits
run rgsimplot to make banana_gif
giftopnm banana_gif | pnmtopng > banana.PNG
run evselect to make detplane_fits
run rgsimplot to make detplane_gif
giftopnm detplane_gif | pnmtopng > detplane.PNG
foreach (source) {
run rgsspecplot with list of fits spectra as input, to make PDF spectrum plot
} end foreach source