Simon,
Really appreciated as that came with a lot of problems. I believe a spacer may have been added between the 2 sets of images and the camera ended up being rotated about 1 1/2 degrees. I originally thought that the software ICE had done a great alignment job, but only upon zooming right in, after having almost completed post processing it, there was a thin band of doubled up stars alternating in red and blue colour along the join. Very many hours and expletives later I got the best I could from it. So many thanks.
As you know these are large files so it takes even longer than normal. Hope all is well at home.
Best regards,
Ray