You guys already knew this, but I got a big kick out of learning about it today.
27 x 120 seconds on the Veil Nebula at F2.8/400mm. Canon DSLR with 5.7 uM pixels.
Stacked in DSS and minimal processing in Astroart. On the left standard stacking, on the right drizzled. Probably some subtle differences in stretching as well, but I tried to minimize these.