Hi TC, yes i am afraid that it is stacked too, all of them are, i think the wasp was about 36 images. It has that strange halo problem on some of the bristles. It was with a 6.1 mp ccd. the crane fly and the moth were with a 12mp ccd, and the halo/diffraction effect is much less and it took a whole lot less tweaking to get the stack to work propperly. So that was a new discovery. It also turns out that if you up the size of your source images the resulting stack has less problems, so i guess the algorythm is dependent on the number of pixels it has to work with, not just what is on them. It takes a fair old while to process with larger pictures.
tim