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Oh, and one more comment....
Giant spheroid-dominated systems like IC 1459 often appear to be simple and featureless in many images, but deep and well-calibrated images like Marco's can reveal considerable complexity in these big elliptical galaxies and S0 galaxies.
Recent analyses in the literature have proved that these giant galaxies are - in reality - complex multi-component systems;
but it takes exceedingly accurate photometry and imaging, and analysis of stellar orbits and stellar populations, to show that these galaxies are composed of structurally and kinematically distinct sub-components.
cheers,
badgalaxyman
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