I assume if you have 74 targets that you want to image, they are of varying RA and will come into good positions throughout the year? That being the case you could in theory set up all of them at once in the Robotarget manager and they will be done in turn as they pass through the hour angle constraints that are normal to set. I have to look into it more as I have not used it so far but there is a "West preferred" setting for Robotarget, meaning that if you have two targets which qualify and which have the same scheduler priority set, Voyager will pick the most westerly one first.
As for picking my 1000 of so saturated pixels. My reason for choosing that is to make sure as few stars or bright objects as possible are saturated to white, to preserve star colours if I can.
There is an image viewer packaged with Voyager which shows some basic image statistics, such as minimum pixel value (And how many pixels are at it) Mean, median and maximum value (Normally that will be saturated, and how many pixels are at that value, which is where I pull that figure from)
It may get a bit subjective, I recently had to accept a lot more saturated pixels than I normally would due to bright stars near a dim target.
As it happens, in my case a typical LRGB cycle takes about 40 minutes as 120 second exposures seem to work pretty well, but when you can let the scheduler do the work it does not matter too much, if the target passes out of the hour angle limit or fails some other constraint it finishes the running sub and moves on to the next target.
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