Thanks Lester and Swannies
Sorry Folks,
I was a bit tired (and slack) when I posted this image!
This was taken with the 8" @f27 using the DBK 618, a GSO 2.5x Barlow + extension tube. Captured with IC Cap, 1/76th sec Gain 650 (about 75% Histogram). It was the best 700/21000 frames over 6min. Cropped in Castrator. Debayered in DeBayer (bilinear). Quality graded, stacked and sharpened in Registax 6. Colour and 200% resize in CS3.
I had earlier reinstalled Firecapture in the hope of running some tests, but for a second time it seemed to be the cause of IC Cap crashing?? So I did a quick uninstall while some cloud passed

I am not 100% certain that FC is to blame as IC Cap ran perfectly well the session before this with FC installed and IC Cap crashed on the first startup after uninstalling FC (I always restart XP after I uninstall a program under XP) but after that was faultless again?
I may have to resort to 2 machines until I decide which capture program meets my needs best.