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Thanks guys, your positive comments are as always, appreciated. Just some background info. The scope is a F7.9 computer polished (no ion milling) RCOS 14.25".
Bulk of the data (about 5 hours) was through a STL11000 with an AOL.
Another 40 minutes of STX16803 luminance was added for the re-pro.
In either case M104 is placed about as poorly as possible in the North (right in the sky glow of downtown Sydney) as it transits when seen from my backyard.
This causes all sorts of grief with gradients which I suspect I'll only ever solve fully by a re-shoot from a dark site.
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