Hello,
Did you try the INDI driver for Atik filter wheels ? It could be interstereting to test it with your Nautilus one.
If I remember, the Nautilus filter wheel was made by a portuguese company named Brightstar (and then named Nautilus by Orion Telescopes & Binoculars). And they really look like Atik's filter wheels too. So they could be managed by the same drivers.

Vincent

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