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Proceedings Paper

The DECam data acquisition and control system
Author(s): K. Honscheid; J. Eiting; A. Elliott; J. Annis; M. Bonati; E. Buckley-Geer; F. Castander; L. da Costa; M. Haney; W. Hanlon; I. Karliner; K. Kuehn; S. Kuhlmann; S. Marshall; M. Meyer; E. Neilsen; R. Ogando; A. Roodman; T. Schalk; G. Schumacher; M. Selen; S. Serrano; J. Thaler; W. Wester
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Paper Abstract

In this paper we describe the data acquisition and control system of the Dark Energy Camera (DECam), which will be the primary instrument used in the Dark Energy Survey (DES). DES is a high precision multibandpath wide area survey of 5000 square degrees of the southern sky. DECam currently under construction at Fermilab will be a 3 square degree mosaic camera mounted at the prime focus of the Blanco 4m telescope at the Cerro-Tololo International Observatory (CTIO). The DECam data acquisition system (SISPI) is implemented as a distributed multi-processor system with a software architecture built on the Client-Server and Publish-Subscribe design patterns. The underlying message passing protocol is based on PYRO, a powerful distributed object technology system written entirely in Python. A distributed shared variable system was added to support exchange of telemetry data and other information between different components of the system. In this paper we discuss the SISPI infrastructure software, the image pipeline, the observer interface and quality monitoring system, and the instrument control system.

Paper Details

Date Published: 19 July 2010
PDF: 12 pages
Proc. SPIE 7740, Software and Cyberinfrastructure for Astronomy, 77401K (19 July 2010); doi: 10.1117/12.856734
Show Author Affiliations
K. Honscheid, The Ohio State Univ. (United States)
J. Eiting, The Ohio State Univ. (United States)
A. Elliott, The Ohio State Univ. (United States)
J. Annis, Fermi National Accelerator Lab. (United States)
M. Bonati, National Optical Astronomy Observatories (United States)
E. Buckley-Geer, Fermi National Accelerator Lab. (United States)
F. Castander, Institut d'Estudis Espacials de Catalunya (Spain)
L. da Costa, Observatorio Nacional (Brazil)
M. Haney, Univ. of Illinois (United States)
W. Hanlon, Univ. of Illinois (United States)
I. Karliner, Univ. of Illinois (United States)
K. Kuehn, Argonne National Lab. (United States)
S. Kuhlmann, Argonne National Lab. (United States)
S. Marshall, SLAC National Accelerator Lab. (United States)
M. Meyer, Univ. of Illinois (United States)
E. Neilsen, Fermi National Accelerator Lab. (United States)
R. Ogando, Observatorio Nacional (Brazil)
A. Roodman, SLAC National Accelerator Lab. (United States)
T. Schalk, Univ. of California, Santa Cruz (United States)
G. Schumacher, National Optical Astronomy Observatories (United States)
M. Selen, Univ. of Illinois (United States)
S. Serrano, Institut d'Estudis Espacials de Catalunya (Spain)
J. Thaler, Univ. of Illinois (United States)
W. Wester, Fermi National Accelerator Lab. (United States)


Published in SPIE Proceedings Vol. 7740:
Software and Cyberinfrastructure for Astronomy
Nicole M. Radziwill; Alan Bridger, Editor(s)

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