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Thanks Fred. I can see that your image is a beautiful one, even looking at the low resolution <200 kB version allowed under this forum. So I tracked down your SmugMug astrophotography collection. Wow! That is a fantastic portfolio. I am envious. I will study some of your images for inspiration on what I want to aim for. It is important to have direction and a plan when imaging at a high level.
The detail captured in the NGC 456 sections of our images is very similar. I was working at f/4.2 whereas you are working at f/9. That might explain why I can go deep at Sydney (I appreciate it is not that simple, we must also consider CCD pixel sizes, quantum efficiency, etc.).
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