After 12 days & nights with cloudy and rainy weather (200 meters above me the winter arrived), I started digging after forgotten captures. I found some
Now I have almost 14 hours exposure. I made a crop to the image in order to remove the artifact ray, to simplify the processing. Steve (STEVE333) has a great tutorial with a technique for removing these artifacts.
This time the image is at full resolution (last time was bin2x2), but this site cannot display it at this resolution.
Clear skies!