Hi Jo, probably no more than 2 hours all up. Sub length was from 3 to 6 minutes at ISO 400. Subs are scattered across different folders so I've lost track of things a bit. I'm a computer slob if the imaging run lasts for more than one night.
Your repo looks good, but shows the CA which I was trying to hide.
I'll re-shoot it with the ED80 sometime, clouds permitting, which will hopefully show better colour.