Evening all,
Thanks very much for the helpful replies - much to ponder and chew over there. I also found a number of threads on another forum to digest as well.
To answer Mark's question, there are no filters present. I suspect I will need to invest in some, as well as a rotator. The camera is about 90 degrees off vertical when fully threaded onto the scope.
I tried packing it with thin circles of card, but that pushed me out to ~56mm of backfocus.
The attached image is a heavily stretched (but with no flats) output from Sunday night's work. It's supposed to be NGC290 and a good chunk of the SMC... I have a feeling it's also a bit out of focus - well, it was the first time the EAF got used, so with experience it will get better.
I spent time today taking flats and darks to match yesterday's settings. Hopefully I'll be able to get a decent image of 47 Tuc out of it all.
Interestingly enough, the flats showed heavy vignetting when I turned on the 'auto-stretch' function in Ekos' FITS viewer window. But looking through the telescope gave me no idea as to why it's vignetted so badly.
Now to stack all those images of 47Tuc and see what comes out the other end.
Cheers,
V