I am in touch with someone from Risingcam.
They gave me some curves to try to fix my hesitations about the gain value. But the choice of the right value is still not really clear to me.
And I don't have many clear nights to check it.
For the error concerning the temperature sensor information. I sent the sdk I received with the camera to Jasem. As it seems more recent than the one used for the INDI current version, I hope it will fix the problem.
The underlying problem is that I am not very confident to the value returned in Ekos. But I might be too careful.

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