Roger,
Looks like a lot of detail and an impressive image scale but 10*30s is 300s really not 30 isn't it.
I assume that was the 12" scope as well and you do not mention the camera used , unmodded DSLR = impressive, high sensitivity, cooled, dedicated astro CDD = less so.
Still I get the gist, it IS amazing what 30s can get these days.
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