OzPoz is the multi-fiber positioner feeding the spectrographs GIRAFFE and UVES from a Nasmyth focus of on of the VLT Unit Telescopes. Together with GIRAFFE and UVES, it forms the FLAMES facility. FLAMES has been available for observing since successful completion of its science verification in 2003.
Since commissioning there have been no major instrument refurbishments or major technical issues. OzPoz is one of the most reliable instruments in terms of instrument downtime that ESO currently has on any of the VLTs.