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Processing of NGC 3981.
I have tried to use my new tools and expertise to process the NGC 3981 data I have downloaded from this site. What a chore. It took a lot of time to process out the central artifact. But finally I ended up with a set of corrected data. Since I have started to use NoiseXterminator for my noise reduction, I decided to toss everything into Star Alignment and let it upsample the binned color data. This seemed to go well, with none of the strange error messages shown the the video. I then proceeded to make a RGB image and color calibrate it. To my disgust, Image Solver errored out with too few stars!!! After much investigation, I found it worked on the unbinned luminance data, and the binned color data, but not on the Star Alignment upsampled data. ????
So I created a binned color image. Sure enough Image Solver completed without error. But when I tried to use SPC to color calibrate, it errored out again with too few stars??? I had just seen PCC work on the video, so I tried that. This worked fine. ?????
The rest of the processing was uneventful.