So I got the scheduler mostly doing what I want.

This morning I noticed that, as a new job was started, the scheulder aborted an exposure in progress - in one case with just about 10 seconds remaining - rather than waiting for that exposure to finish. It would be nice if there was a control (did I just miss it?) to say whether it's more important to start a target as soon as possible or whether it's ok to start a couple of minutes late to allow an exposure to finish.

And If an exposure is to start as soon as possible, does that imply slewing, aligning, guiding (including any necessary calibration) a few minutes ahead of time so that at the scheduled start time data collection can actually begin? I'm thinking not, since it appears that the scheduler performs its actions at the end of the minute where the action is to be taken.