Thanks for all the feedback on this.
I have been testing Nebulosity 2 over the last while and on Friday night bought a license to it. It's such a huge improvement on what functionality I had with DSLRFocus I wish I had switched over sooner
The Frame & Focus, and fine focus functionality of Nebulosity 2 is great. Everything is so much easier to use than was with DSLRFocus.
I do wish Nebulosity 2 would save the CR2 downloads as CR2 files rather than 3 FITS files, but I can work with that no problem, just takes a little more effort to split them in to their colours in processing.
Thanks all,
Roger.