From earlier in the week, the last best exposure. 889 frames f/7.5. This was reprocessed in Registax V with multiple alignment points. Method 1 had nine points, method 2 about 250 points, matrix only two points. I chose method 2. A 1.4 megapixel stack of 889 frames took fifteen minutes to align, and each subsequent step (optimize, stack) took fifteen minutes or more. The advantage to using a dual processor machine was that one processor was devoted to registax, and the other was available for work. This is a crop from the original. I do most adjustments at 150 to 200% of original size, then reduce back or smaller.
Shot at f/15, 449 frames 339 stacked: 95% quality. This is a crop from a 1.4Mp image, but wordpress reduced it about 50%. The best of the week: about an hour of computer time processing. (24 alignment points, create reference frame, sharpen, continue, optimize, stack, sharpen.) No processing in Photoshop except cropping and conversion to jpeg.