System Verification

Once aligned and all its functionalities working, the system is ready to be tuned to reach its optimal performances. This stage does not belong to our responsibility although we give our support to solve potential problems that always come when starting to use such complex systems. This stage usually lasts for several months depending on the instrument complexity and ends with the so called Preliminary Acceptance in Europe (PAE) where instrument functionalities and performances are reviewed by an internal board. This applies also to ESO instruments built externally by consortia. When an instrument is declared compliant, it is authorised to be shipped and installed at the telescope.