Francois --

For simple photometry runs, I now use the "delay between" feature of the "autosave" menu in Maxim to set for example a 15 minute interval between images.
This means you have only one target? Much simpler:

#sets 1000
#quitat 11:00
#count 1, 1, 1
#filter B, V, R
#binning 1, 1, 1
#interval 12, 7, 8
Star1 02:05:54 +22:51:38
#waitfor 900

This will take images in B, V, R (12, 7, 8 sec) every 15 minutes until 11:00 UTC. At that time ACP will do a shutdown.

And "15 min between images" ... does this mean you only take one image in one color band each point? If so, even simpler:

#sets 1000
#quitat 11:00
#filter V
#interval 12
Star1 02:05:54 +22:51:38
#waitfor 900

This will take images in V every 15 minutes until 11:00 UTC. At that time ACP will do a shutdown.