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Longinotti, A.

Paper Title Page
WPPA10 Study of Portability of VLT Instrumentation Software to ACS 337
  • G. Chiozzi, A. Longinotti
    ESO, Garching bei Muenchen
  • P. Santin, R. Cirami
    INAF-OAT, Trieste
  The Very Large Telescope (VLT) will remain in operation most probably for at least two more decades. Being the software technology currently used at the VLT and more than one decade old, the maintanability of such a complex system might become a critical issue. The ALMA Common Software (ACS) is based on newer technology. Following this consideration, one of the obvious options to improve the maintainability of the VLT Software would be to port it, or parts of it, to ACS. This would allow optimizing maintenance resources for both VLT and ALMA Software, eventually making available resources for new ESO projects, such as E-ELT. Because of operational constraints, this can only be achieved gradually, possibly starting with new VLT sub-systems. In the year 2004 a pilot project has been started to study the effort needed to replace standard components of the VLT Instrumentation Software with ACS based ones. Starting from a simple instrument created from the VLT Template Instrument and entirely based on the VLTSW, we have replaced the core of the Observation Software (OS) with an ACS based equivalent. The purpose of this paper is to summarize the work done and draw some conclusions.