Cheers Ray and Rally, I was generally familiar with what decon did and how it worked but (still) have my reservations with its use in the general amateur astronomical community, that was all.
Having said that, both of you have managed to improve my mental picture of how it
should work, so cheers for that men
Now I just need to find a good piece of Decon software to use
I have never been happy with the results provided by Astroarts application of it (so very rarely use it) but I suspect I am not utilising it correctly either
Thanks again guys
Mike