The vertical confocal microscope was a world premiere that has been development in collaboration with BioImaging Facility staff-scientist and research-groups at I.S.T. Austria. The (Root-)Tracker allows to track and image the sample over a prolonged period of time. More details about the system can be found here: https://elifesciences.org/articles/26792
Update 20.01.2020: The tracker is expanded to other confocal systems, since it can be applied to different kinds of sample (see also video below).