After some more issues, some of them we need to fix, we got a first light last night in Spain:
It's a 300 sec, Luminance, unguided frame. FWHM in the center was at around 1.1" FWHM (!).
We do have some tilt caused by the focuser, which we will address. Also, the second filter wheel is currently not usable due to a power plug issue. Will fix it in the next days 😀