Your image looks very good Paul. I thought I was imagining the outer halo until I inverted the image.
Here is an animated gif of your image and mine 6MB
http://d1355990.i49.quadrahosting.co...6_06/PaulB.gif
I would have to collect about 50x32 min to collect the same number of photons as your image. If the clouds get out of the way will try it.
Bert