Thanks for your answer, but as far as I understood from the SBig info page ( www.indilib.org/devices/cameras/sbig-ccd.html , bottom) the indi_sbig_ccd driver supports only one camera per driver:
[cite: "The SBIG driver only support one-camera-per-driver, so if you have more than one SBIG camera, you need to start a dedicated instance to each camera."]
I still tried it, but as I expected, it did not work either.
It shows the same error, so i think, it looks at the same USB port. (In KStars USB1).

Any other suggestions?
Thanks,
Daniel

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