Figure 16: [
ISOCONT, 'm51_iso.fits', iso_struct_raster, /RADEC, SCAN=2, /NOLEVEL ]
Color image of m51_iso.fits, with the observed sky region of each raster
position (/SCAN) of iso_struct_raster. The contour levels of
iso_struct_raster are not displayed (/NOLEVEL). It would have been
possible to display the contour levels but not the color image by using the
/NOCOLOR keyword instead of /NOLEVEL.
