Hey there Peter!
Top effort for your first public exhibition! As Marc says, if you go straight to autoguiding you'll easily correct for what is already good basic alignment. Your processing is very good for your first time out - a little purple in M8 maybe, but that's subjective and open to individual interpretation. No doubt you've discovered how difficult it is to present your best work inside the 200kb limit imposed here. Do you have a link to the full resolution version?
Welcome to the club!
