The DECam data acquisition and control system

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

doi:10.1117/12.856734

19 July 2010 The DECam data acquisition and control system

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

Author Affiliations +

Proceedings Volume 7740, Software and Cyberinfrastructure for Astronomy; 77401K (2010) https://doi.org/10.1117/12.856734
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

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.

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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, and W. Wester "The DECam data acquisition and control system", Proc. SPIE 7740, Software and Cyberinfrastructure for Astronomy, 77401K (19 July 2010); https://doi.org/10.1117/12.856734

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