edit E: more details on core
:) Hello ! good news, i've time to loose cause my anlke/leg broken (relative good news lol i'm optimistic) so i've open a blog, with also Video Tutorials and Tips in astrophotography and nature photography! hope you like it!

More info about Drizzle, an alghoritm designed for deep space:
http://www.xamad.net/blog/?p=258&lang=en

Learn about Drizzle processing astrophotography with Deepsky Stacker, here is my video tutorial in english:
http://selz.co/Nkr33nwq$
a little preview of this tutorial is on youtube: http://youtu.be/wsuZ0TTv3Nk

edit D: a little more streach, but i think this is the limit :)

edit: C: still the same shots of 2015, but i've broken my ankle/fibula so i've time to loose :\ this is a total reprocessing using my new personal workflow that can mitigate noise :) hope you like it, i'll put a tutorial on my web site soon!
(i think that this stack can improve a little more, next days i'll retry to streach more)

playing with drizzle 2x processing :) so many details for a DSLR!