I attempted to use the ZWO ASIIMG software to verify filter direction changes using the "One-Way" switch option for the EFW. Unfortunately ASIIMG is saving unexpected characters (quote marks) into the CFA field for CFA='NONE' and Pixinsight will not process it because it doesn't understand. I don't have the patients to erase it from all the images and try reprocessing. But I assume the One-Way switch fixes the issue and should be added to the ZWO EFW INDI driver for all their filter wheels, not just the 2" version.

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