[renormalised (Carl)]

Originally Posted by AlexN

Heres a link to a 100% crop of the cluster itself... Excuse the slight burnout in the core.. Wasn't there when the image was a 16bit tiff? JPG issue I suspect..

http://www.darkskyau.com/cm/displayi...album=16&pos=2

How much compression did you use in the jpeg?? You can see artifacts in the background, so that's definitely not core burn due to overexposure. Although even if you leave it at 100%, the fact that normal jpeg ratios for Y:U:V colour space is 4:4:4 means you're going to loose some resolution in your image.