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The first image of 19:15 was taken prior to collimating. I spent 20 minutes tweaking the collimation. You can see the difference between the 19:15 and 19:40 image and the rest.
First two were taken with a 2 x Barlow, and the later one's with a 2 x Barlow and a Barlow extension tube.
Just after finishing the last capture, the clouds rolled in... and that was that.
Time to open the booze... well it is my 29th wedding anniversary ;-)