[Slawomir (Suavi)]

Originally Posted by SkyViking

I should have linked to the original size version: (http://www.rolfolsenastrophotography...er/i-Sb22cmT/O)
SNR improves significantly with each step, all the way up to 103 hours. The very faintest details are only well defined in the last frame.

Very nice and unique comparison Rolf. Apart from more detail and less noise, images with longer integration have increasingly more depth as well.