clouds within the stacked photos

Last night in Wales, we had a fairly clear night with very thin cloud coming and going. Unfortunately, amongst my pictures, there was no area that was completely clear that I could see. To make matters worse, the moon was also very bright.

Is there a way to remove the effect of thin cloud from the stacked photos? I noticed in the output one can see where the cloud seemed to have lingered. As you can see from the other photo when there is no cloud, it does not cause any problems. I know that the second photo's exposure time was a bit too long. I do have light pollution here and the moon was out for both photos.

So, in summary, is there a way of removing the clouds from the stacked photos?

Thanks,

Naddie

HOSTED PHOTO
please log in to view hosted photos in full size.

HOSTED PHOTO
please log in to view hosted photos in full size.

I've had same situtation, where upon taking 55 minutes of exposures there were some thin/whispy clouds that appeared around 20 minutes and were gone by 30 minutes, I just processed them as whole bunch as is within DSS. StarTrails I'd have to throw the whole session out, but DSS seemed to avg out the clouds.....did your try DSS yet and how'd they come out?