Quote:
Originally Posted by Peter Ward
Newbies take note: this is what makes a good deep-sky image, great.
perfectly guided stars
perfect focus
good star colour variation.
noise well controlled
well controlled highlight and shadow details
no processing artifacts (stars don't have black/cyan/magenta or weird colour dark rings)
Or... just have a squizz at one of Martin's images.
Just sublime as usual Martin.  
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And a lazy $50,000 + worth of gear, great skies and location, exemplary skills in processing, etc, etc.