Standard practice is to autofocus ONLY with L filter and then use measured filter offsets for all other filters (both board and narrowband).

But results depend A LOT on the composition of the image frame. There are some very difficult targets with few good stars in the frame, especially when imaging small fields in star-poor parts of the skies (ie, many galaxies).

It would be GREAT to have a simple option to specify a slew to a focus star as part of the autofocus system, tied to the scheduler so it's only triggered occasionally.

As long as we have reliable behavior in the "align" module, there's really no penalty for this hourly slew-and-return.

We can engineer this behavior by careful and tedious composition of sequences and schedules, but it's prone to error and logic gotchas.

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