Gemini Observatory: Five years of multi-instrument queue operations

Gemini Observatory has operated Gemini North and South in multi-instrument queue mode since 2005. Each telescope has about 85% of the time scheduled for science, of which 90% are in queue mode. More than one instrument is used 75-80% of all science nights. We present on-sky performance data from the last five years: Completion rates for queue programs, open-shutter performance, and acquisition times. Open-shutter performance and acquisition times are competitive with other 8-10 meter-class telescopes for which data are available. We give an overview over how the queue is populated, planned and executed.