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Hi Dennis!
They're awesome images!
Just one thing i'd like to add is, this demonstrates that not only should one be looking out for the nebulae subject but also whats going on around it! Notice the movements of C/2007 N3 Lulin! Even though stacked images boost S-N Ratio's they also have the knack of bringing out any potential discoveries!
I'd like to see if anyone out there has compared an image to an older one of the same region in case of objects like comets and novae/supernovae etc.....
While ever you are photographing the stars the chances for discovery are much higher if you take notice of any changes! Of course we wouldn't want to flood the CBAT of false alarms (they HATE that!) but anything in suspicion should be backed up by other observers....a forum such as this and others is a very reliable and up-to-date tool that shouldn't be overlooked!
Great stuff Dennis!
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