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Proceedings Paper

Adoption of new software and hardware solutions at the VLT: the ESPRESSO control architecture case
Author(s): R. Cirami; P. Di Marcantonio; I. Coretti; P. Santin; M. Mannetta; V. Baldini; S. Cristiani; M. Abreu; A. Cabral; M. Monteiro; D. Mégevand; F. Zerbi
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Paper Abstract

ESPRESSO is a fiber-fed cross-dispersed echelle spectrograph which can be operated with one or up to 4 UT (Unit Telescope) of ESO's Very Large Telescope (VLT). It will be located in the Combined-Coudé Laboratory (CCL) of the VLT and it will be the first permanent instrument using a 16-m equivalent telescope. The ESPRESSO control software and electronics are in charge of the control of all instrument subsystems: the four Coudé Trains (one for each UT), the front-end and the fiber-fed spectrograph itself contained within a vacuum vessel. The spectrograph is installed inside a series of thermal enclosures following an onion-shell principle with increasing temperature stability from outside to inside. The proposed electronics architecture will use the OPC Unified Architecture (OPC UA) as a standard layer to communicate with PLCs (Programmable Logical Controller), replacing the old Instrument Local Control Units (LCUs) for ESO instruments based on VME technology. The instrument control software will be based on the VLT Control Software package and will use the IC0 Field Bus extension for the control of the instrument hardware. In this paper we present the ESPRESSO software architectural design proposed at the Preliminary Design Review as well as the control electronics architecture.

Paper Details

Date Published: 24 September 2012
PDF: 12 pages
Proc. SPIE 8451, Software and Cyberinfrastructure for Astronomy II, 84510R (24 September 2012); doi: 10.1117/12.925142
Show Author Affiliations
R. Cirami, INAF - Osservatorio Astronomico di Trieste (Italy)
P. Di Marcantonio, INAF - Osservatorio Astronomico di Trieste (Italy)
I. Coretti, INAF - Osservatorio Astronomico di Trieste (Italy)
P. Santin, INAF - Osservatorio Astronomico di Trieste (Italy)
M. Mannetta, INAF - Osservatorio Astronomico di Trieste (Italy)
V. Baldini, INAF - Osservatorio Astronomico di Trieste (Italy)
S. Cristiani, INAF - Osservatorio Astronomico di Trieste (Italy)
M. Abreu, Univ. of Lisbon (Portugal)
A. Cabral, Univ. of Lisbon (Portugal)
M. Monteiro, Univ. do Porto (Portugal)
D. Mégevand, Observatoire Astronomique de l'Univ. de Genève (Switzerland)
F. Zerbi, INAF - Osservatorio Astronomico di Brera (Italy)

Published in SPIE Proceedings Vol. 8451:
Software and Cyberinfrastructure for Astronomy II
Nicole M. Radziwill; Gianluca Chiozzi, Editor(s)

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