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Proceedings Paper

The Readout and Control System of the Dark Energy Camera
Author(s): Klaus Honscheid; Ann Elliott; James Annis; Marco Bonati; Elizabeth Buckley-Geer; Francisco Castander; Luiz daCosta; Angelo Fausti; Inga Karliner; Steve Kuhlmann; Eric Neilsen; Kenneth Patton; Kevin Reil; Aaron Roodman; Jon Thaler; Santiago Serrano; Marcelle Soares Santos; Eric Suchyta
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Paper Abstract

The Dark Energy Camera (DECam) is a new 520 Mega Pixel CCD camera with a 3 square degree field of view designed for the Dark Energy Survey (DES). DES is a high precision, multi-bandpass, photometric survey of 5000 square degrees of the southern sky. DECam is currently being installed at the prime focus of the Blanco 4-m telescope at the Cerro- Tololo International Observatory (CTIO). In this paper we describe SISPI, the data acquisition and control system of the Dark Energy Camera. SISPI is implemented as a distributed multi-processor system with a software architecture based 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. We discuss the SISPI infrastructure software, the image pipeline, the observer console and user interface architecture, image quality monitoring, the instrument control system, and the observation strategy tool.

Paper Details

Date Published: 24 September 2012
PDF: 15 pages
Proc. SPIE 8451, Software and Cyberinfrastructure for Astronomy II, 845112 (24 September 2012); doi: 10.1117/12.925717
Show Author Affiliations
Klaus Honscheid, The Ohio State Univ. (United States)
Ann Elliott, The Ohio State Univ. (United States)
James Annis, Fermi National Accelerator Lab. (United States)
Marco Bonati, National Optical Astronomy Observatories (United States)
Elizabeth Buckley-Geer, Fermi National Accelerator Lab. (United States)
Francisco Castander, Institut d'Estudis Espacials de Catalunya (Spain)
Luiz daCosta, Observatorio National (Brazil)
Angelo Fausti, Observatorio National (Brazil)
Inga Karliner, Univ. of Illinois (United States)
Steve Kuhlmann, Argonne National Lab. (United States)
Eric Neilsen, Fermi National Accelerator Lab. (United States)
Kenneth Patton, The Ohio State Univ. (United States)
Kevin Reil, SLAC National Accelerator Lab. (United States)
Aaron Roodman, SLAC National Accelerator Lab. (United States)
Jon Thaler, Univ. of Illinois (United States)
Santiago Serrano, Institut d'Estudis Espacials de Catalunya (Spain)
Marcelle Soares Santos, Fermi National Accelerator Lab. (United States)
Eric Suchyta, The Ohio State Univ. (United States)


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

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