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Originally Posted by hobbit
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Well... you're getting there, but there are lots of things still in the image that are 'darker-than-background' and artificial. Crop these away - AutoDev should make them readily apparent (they are in the Astrobin image). You have stacking artifacts at the top (causing Wipe to back off and leave blue), bottom, left and right. Your flats didn't work very well as there are a good few dust donuts. You can mask these out though, for example with the Lasoo tool (so that Wipe doesn't sample them for background pixels). There are dust specks as well - bump up the drak anomaly filter which will filter out smaller dark anomalous data like the dust specks.
And of course, you're going to have to align the red, blue and green channels - preferably during stacking (by taking one of the channels as a calibration source). If you can't, then you can 'abuse' the StarTools' Lens module to shift red and blue into place to line up with the green channel - make sure to crop the alignment artifacts after that procedure.
Bottom line is; make sure you give Wipe (and Startools as a whole) data that is as 'real' as possible, without artificially introduced errors,artifacts or dark anomalies!