Feedback from the ESO archive: towards observatory use optimization

Vuong, Myha

The ESO Archive contains data collected at the three observatory sites in Chile, on Cerro Paranal, Cerro La Silla and the Chajnantor plateau. The data currently originates from 10 telescopes ranging from 2.2 to 12 meters equipped with 35 state-of-the-art instruments. Together, they cover a large observational domain from optical to sub-millimeter. In the near future, ESO will also host a complete synchronised copy of the Atacama Large Millimeter/submillimeter Array (ALMA) archive through the European ALMA Regional Centre (ARC).

In this paper we present the large and varied collection of archival holdings, stored within the ESO data centre, and the services available for users to access the Archive. We illustrate a few examples of archive feedback applications: (a) Climatology at Chajnantor Plateau based on archival meteorological data obtained from the Atacama Pathfinder EXperiment (APEX) telescope, (b) Precipitable Water Vapour over Paranal based on analysis of archival spectra, (c) Finding Solar System Bodies in ESO archival observations and (d) Re-ingestion into the Archive of science ready data products. The provision of such value-added services is a vital step in fully exploiting the precious resources that comprise a state-of-the-art astronomical observatory.

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