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Hi Dave,
Thanks for your comments back! I mean that because I am fully aware of the immense effort it takes to arrive at a really satisfactory image. Then, when someone points something out it can feel rather deflating to begin again.
It could be that your basic subframe exposure time is just too long for those brighter stars. If the cores are blown in the subs no amount of processing can undo the overflowing wells. You can use the best of both star images..in photoshop it’s quite easy. I have not tried it yet in the Image Blend script in PI - I cannot see why one couldn’t do the same.
Peter
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