I also managed to get some good long duration shots of a minute, which amazed me as well.
The only problem I seem to be having is the colour, when the image comes out of Deepsky Stacker it is almost all blue in colour. I have tweaked the colour in Paintshop, but I'm not sure if it is correct.
I shot all the images in Canon's RAW mode, each image was about 10Mb in size :-0
The image at the bottom is a larger version with slightly different processing.

