Thanks Harry, really useful advice and glad to hear that it is not all down to me 😀
A bit of a puzzle with the Ignore/Use FW switch - need to explore further.
As far as exposure times are concerned, at this stage I’m likely to be happy with the 30”-60” sort of range since I’m in a light polluted environment most of the time.
Cheers and thanks again for your comments.
Experienced hobby photographer and total newbie to anything Astro. iexos100 with ES80ED and Canon DSLRs