[wayne anderson (Wayne)]

Thanks Laurie and Hugh

Thanks Lee, I have found that with 100 subs there is less detail more noise and the stars are a little more blobby, the optimum for my alt/az No guiding setup seems to be between 400 and 500 subs.

Thanks Howard, I have found iso1600 to work the best for me, iso3200 and above is far too noisy, iso800 and below has less noise but needs much longer subs and in alt/az No guiding setup this records field rotation and tracking errors in the data and gives very large blobby stars in the final stacked image.

Thanks Rowland, I just downloaded the trial version of startools to play with it looks promising.