I'd make two sequences: one for the lights, and one for the calibration frames, and two correnpondent scheduler jobs. The calibration one should have dusk/dawn check disabled and lower priority than the lights one. This way, when is imaging time, the lights job will run. When dawn arrive, lights job will be stopped by constraints, and calibration job will be free to run.

If you have all the robotics to do this without human intervention (which I have not), in theory you could go sleep and wake in the morning ready to start processing :woohoo:
For LRGB or narrow band, it totally depends on how you want to image: some prefer to use one whole night for single filter, to avoid small problems caused by filter wheel inherent positioning error and related flat mismatch. In this case there's nothing different from what we have already said.
If you plan to exchange filters during the night, and want to distribute them evenly across subject altitude variation, your only option is define a sequence containing all filters: for instance, keeping base 1 hour, you could do 12x120s L, 4x180s R, 4x180s G, 4x180s B, and let the sequence repeat until dawn; or any other combination.

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