In Period 104, the Nasmyth A focus of UT1 will be available for visitor instruments starting as of mid-November 2019; the Cassegrain focus of UT3 is also available during the first months of Period 104, until VISIR comes back to UT3.

Visitor Instruments can provide a powerful scientific or technical test bench for new instrumental concepts, which may eventually be incorporated later in VLT or other instruments. Visitor Instruments are free from a substantial fraction of the requirements imposed on the fully automated VLT facility instruments.

Teams that want to propose the use of their Visitor Instruments should follow these instructions.

The technical requirements imposed by ESO on Visitor Instruments are available here.  See also our Gallery.

Past Visitor Instruments: