Large Programmes and Surveys

Details Large Programmes and Surveys Large Programmes and Surveys

Mar 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004msngr.115...41w&link_type=abstract

The Messenger (ISSN0722-6691), No.115, p. 41-43 (March 2004)

Astronomy and Astrophysics

Astronomy

Scientific paper

DURING THE 1980S ESO introduced “Key Programmes” to make best use of the observational resources. A first assessment of the success of the Key Programmes was done in 1993 and came to the result that the concept had severe shortcomings (cf. Messenger article by Cesarsky and Kudritzki 1994, Messenger 75, 45). In particular, a large fraction of the available observing time was committed to these Key Programmes and they were severely limiting the access to ESO telescopes for general users. In addition, the scientific impact of these Key Programmes was not very high. To avoid this mistake for the VLT a working group of community astronomers was formed in 1996 to discuss ways of achieving the best possible scientific return of the VLT. The report suggested introducing “Large Programmes” for projects which would require substantial observing time (more than either 100 hours or 10 nights) for a well-focused scientific goal. The duration of these Large Programmes was limited to no more than two years (four semesters). Up to 30% of the total time available for the community could be committed to Large Programmes. Subsequently it was requested that progress reports be presented to the OPC in each semester. The working group also suggested that “at about the time of the start of operations of UT3 the definition of the Large Programmes and its implementation should be reconsidered.” With one telescope entering into operation per year it turned out that this review would be based on more experience by extending the timeline foreseen initially. In 2002 sufficiently many Large Programmes had ended and it was time to assess the impact the Large Programmes have had.

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