Hi Gary
Thanks for that and for the tip, I don't ever mind others tinkering around with my images as it helps me to develop my basic skills further. regarding getting adequate data, in the UK we have to be grateful for what we get and quite often this means one clear night and then no more imaging for over a month, it is very hit and miss. Sometimes it makes renting remote scopes a tempting prospect but the thought of spending anything up to $300+ for one night of imaging brings me back to Earth with a bump
Best wishes
Gordon