This is an excellent image Peter, and I really like the colour balance and the details that you have managed to bring out of this object.
Just so you know with regard to the question you asked me about my version of this, I use pixinsight for everything I do because I really don't understand Photoshop well enough to use. So basically what I do is stack the images using the the batch preprocessing option or the new weighted option, and then I use dynamic background extraction, colour calibration and background neutralisation. I might also use linear fit depending on how things are. I often need to fiddle around with dynamic background extraction a little bit, to try and get as much detail as I can and not overcook it. I will always use green SCNR. But from that point onwards, I then proceed with various processes to try and bring forth the best I can, without overdoing it. I hope this is of use and thanks for your super encouragement. Have a good day. Simon