Hey Rnulf, no sad face needed. The second image is pretty good, certainly for a Neximage. It shows your processing is OK, and collimation can't be too bad.
Re the DBK, I saw another post of yours where you mentioned you have the gamma at 50% and the debayer on. Go to 100% gamma and you will get much better results with the DBK. Also, turning off debayer in the camera will allow you to go 60fps, which is a help in poorer seeing (I use it like this all the time
).
Good luck!
-Ivan