Thanks for the nice comments
Lots of luck involved at this point and plenty of stuff ups... 285 minutes of imaging that took at least twice as long :-/ Took an hour or two to work out that the laptop (85W charger), camera cooler and mount weren’t happy running of the same battery. Also a beautiful still night - didn’t lose a single sub so very lucky :-) Although still feeling guilty about the purchase of the nice mono camera and filters I am pleased with what a bog standard ED80 and HEQ5 can do with them.