Paul - I'm using DSS to stack the images, 10 darks were subtracted from each light frame before the lights were stacked...
The image was taken at -10C.. Some selective noise reduction was used to clean up the image here and there, other areas were selectively sharpened... It took quite a long time to process actually.. Trying to get the detail to come out without incurring the wrath of the noise gods...
No worries David, Keep me apprised..