As this is a recently introduced product marketing only describes a complete assembly. Will ZWO sell the tray part as a separate item to allow filter changes without removing the filter from the tray? For example a LPF filter mounted into 1 tray and Duo band filter in a second tray.
Have you considered mounting the EAF to the dovetail plate? you tube user James Lamb has a video showing how he mounted a Pegasus focuser to the dovetail plate of his ES102. You could use a similar solution for the EAF. https://www.youtube.com/watch?v=CtCZGysgJgs
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