Jakov, Erik, thank you for commenting. 

Ok, I will post next images larger.
Actually, I thought this thread was the ''heligon'' thread, I mean the dedicated thread for any heligon... 

Shall I open a new thread ? Please, let me know. 
It has the most spectacular coma I have seen,,,
I noticed too this big coma aberration, mostly with back lit water drops ! I like the way it decomposes the visible spectrum.