Thanks Phil and BMD, I appreciate you looking and commenting. 
I have attached the 30 sec test shot which I took after I had arrived and set up, just randomly pointing towards the Zenith to check all was okay.
It was taken at 15mm focal length with the Canon RF 15-35mm F2.8L IS USM lens, where I later discovered I had recorded Pluto. The region is right at the edge of the frame so suffers from distortion which did improve somewhat when stopped down to F5.6 compared to wide open at F2.8.
Cheers
Dennis
EDIT: The dew strap can bee seen at bottom right, a good reason to take test shots.
I have attached the 30 sec test shot which I took after I had arrived and set up, just randomly pointing towards the Zenith to check all was okay.
It was taken at 15mm focal length with the Canon RF 15-35mm F2.8L IS USM lens, where I later discovered I had recorded Pluto. The region is right at the edge of the frame so suffers from distortion which did improve somewhat when stopped down to F5.6 compared to wide open at F2.8.
Cheers
Dennis
EDIT: The dew strap can bee seen at bottom right, a good reason to take test shots.