I have just had what turned out to be an incomplete imaging session (NGC 2264) and need to collect more data. I'm using DSS to stack and am vaguely aware of the groups function allowing different ISOs etc for different sessions.
My question is how accurately will the framing of my second session need to match the framing of the first one, for DSS to stack the whole lot successfully? I am not using a GOTO mount - I have a Star Adventurer (guided) and am using a Canon DSLR with a 300mm prime lens, so the FOV is fairly large - about 4.2x2.8 degrees. Therefore I should be able to get the target roughly in the same place in the frame by eye using test shots - the Xmas Tree cluster is thankfully fairly obvious. However, it will no doubt be many times further away from the first group than the difference between adjacent dithered subs.
Is DSS smart enough to deal with that?