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Image 1 is by far the better. You have some nice star colours going, its a bit brighter and image 2 seems to have a red bias. Both are good in that the core is not overexposed which is a common problem imaging globs.
It would be great to go for a much longer exposure. If its not autoguided then go for half an hours worth and if you have autoguiding go for at least an hour's worth.
You'll see the difference in the results.
Greg.
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