Hello Jean-Luc,

I have the same devices (WATEC + stk1160) and I can successfully open the stream in ekos using directly V4L2 CCD.

However, I cannot take single captures (my goal is to perform astrometry), even when selecting stack: Additive option.

It says: "Absolute exposure duration control is undefined and tacking is not supported".
Logs attached.

Did you manage to make it work on your side?
Thank you and clear skies