Roger
Have you tried to use
Audela as your capture program?
It will run the ST7 and most mounts and it is free.
It has a supernova survey function that would automate the slew, capture and simple reduction of the images. You would have to edit the galaxy list that it uses to only include the NGC items but this would not be too hard.
Great project you have started and maybe you could also look for supernovas at the same time.
