There is some specific configuration required for the ASI120 cameras.
Issue is that sometimes indi switches from 16-bit to 8-bit, because the camera issued an error during an acquisition (this can also affect your darks, as no suitable darks can be found for 8-bit, if you have your darks in 16-bit).

Look at the settings detailed here:

github.com/aaronwmorris/indi-allsky/wiki...20MC-S-Camera-Issues

This might fix both your issues.

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