About 140 30 second and 60 second captures.
The 60 second captures had a 50% failure rate because there was simply too much stuff on the scope and a sand bag to add weight for counter weight.
But I am rather surprised this turned out at all.(Nikon D5500 8 inch f5 reflector 1600 iso and me half frozen)
I cropped it and rotated it so the swan sits as a swan would sit.
Minimal processing it is what it is.
alex