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Instrumentation developments are organised and managed by the Instrumentation Division (INS) located at ESO's Garching Headquarters. INS also hosts the Instrumentation Project Office of the E-ELT.
The following operational instruments have been built under the complete responsibility of ESO:
Development together with external consortia
Together with external consortia ESO was responsible for the definition and contributed to the design, construction and implementation at the observatories of the following instruments and facilities:
A special case is the Visitor Focus on VLT-Antu (UT1), which is reserved for visitor instruments to permit innovative observations by instrument teams using their own stand-alone instruments.
Interfaces: One crucial aspect of instrument building is to make sure that they work properly with the telescope(s) for which they are designed. For this purpose ESO exercises strict control over the interfaces between the VLT observatory and its instruments. The detailed requirements on VLT instruments are available online.
Instrument upgrades: Upgrades keep the instruments competitive and may be proposed from outside or inside ESO.