Thanks Rob, thats interesting what you say about guiding.
I guess what I need to know is just how good is guiding software at picking up movement? A lot of people say it can pick up 1/4 of a pixel movement (therefore the guiding pixels/arcsec can be 1/4 of imaging chip). If this is so my imaging chip will notice the movement before my guiding chip in its current setup, however if its more sensitive than this I should be ok.
I guess I'll have to do some tests, but like you say, there is no rush as I'm getting quite good results already. Hopefully I can get out again this week and do some more.
