That's definitely a big improvement.
Look at the old image:
http://www.flickr.com/photos/4726878...in/photostream
There is far more detail in the core now .
The 2 , little galaxies at the top stand out better as the
background has obtained more contrast from the noise.
The colours are better showing the red nebulosity of
the nebulas inside M83.
Well done - I knew that data was good.