moving between 2 targets

moving between 2 targets

Hello,

Using a GEN 3 EVK VGA CD and high speed mirror, we are tracking two objects at 200Hz. We use the trigger-in to mark the movement of the mirror. 

We try to use the triggers time information to sort the events between the two objects but we remain with the image of the 2 targets.
We tried to take into account the end of the movement by sorting the event with a trigger time + a delay without success.
We think that we are missing something?  about the configuration of the camera? Or other ?

Do you have any ideas ?

Thanks in advance