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One aspect of the new technology is that it is far easier to calibrate it and it is far easier to remove noise from images, plus, as mentioned in this thread, it has a much greater dynamic range and S/N ratio than emulsion-based imaging.
The Old photographs of S0 (lenticular) galaxies in the chemical-technology Galaxy Atlases such as the Hubble Atlas of Galaxies and the Carnegie Atlas of Galaxies showed very little detail within these galaxies, giving them an unjustified reputation for being "boring" because of lack of internal detail.
In fact, amateur CCD imaging can show rich and complex low-contrast detail in many S0 galaxies.
CCD imaging has the ability to reveal details in an object which have a very low contrast with the background light of the object; this type of imaging is very important for understanding S0 and elliptical galaxies.
cheers, Robert
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