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Proceedings Paper

The GRAVITY instrument software/high-level software
Author(s): Leonard Burtscher; Ekkehard Wieprecht; Thomas Ott; Yitping Kok; Senol Yazici; Narsireddy Anugu; Roderick Dembet; Pierre Fedou; Sylvestre Lacour; Jürgen Ott; Thibaut Paumard; Vincent Lapeyrere; Pierre Kervella; Roberto Abuter; Eszter Pozna; Frank Eisenhauer; Nicolas Blind; Reinhard Genzel; Stefan Gillessen; Oliver Hans; Marcus Haug; Frank Haussmann; Stefan Kellner; Magdalena Lippa; Oliver Pfuhl; Eckhard Sturm; Johannes Weber; Antonio Amorim; Wolfgang Brandner; Karine Rousselet-Perraut; Guy S. Perrin; Christian Straubmeier; Markus Schöller
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Paper Abstract

GRAVITY is the four-beam, near-infrared, AO-assisted, fringe tracking, astrometric and imaging instrument for the Very Large Telescope Interferometer (VLTI). It is requiring the development of one of the most complex instrument software systems ever built for an ESO instrument. Apart from its many interfaces and interdependencies, one of the most challenging aspects is the overall performance and stability of this complex system. The three infrared detectors and the fast reflective memory network (RMN) recorder contribute a total data rate of up to 20 MiB/s accumulating to a maximum of 250 GiB of data per night. The detectors, the two instrument Local Control Units (LCUs) as well as the five LCUs running applications under TAC (Tools for Advanced Control) architecture, are interconnected with fast Ethernet, RMN fibers and dedicated fiber connections as well as signals for the time synchronization. Here we give a simplified overview of all subsystems of GRAVITY and their interfaces and discuss two examples of high-level applications during observations: the acquisition procedure and the gathering and merging of data to the final FITS file.

Paper Details

Date Published: 24 July 2014
PDF: 8 pages
Proc. SPIE 9146, Optical and Infrared Interferometry IV, 91462B (24 July 2014); doi: 10.1117/12.2055928
Show Author Affiliations
Leonard Burtscher, Max-Planck-Institut für extraterrestrische Physik (Germany)
Ekkehard Wieprecht, Max-Planck-Institut für extraterrestrische Physik (Germany)
Thomas Ott, Max-Planck-Institut für extraterrestrische Physik (Germany)
Yitping Kok, Max-Planck-Institut für extraterrestrische Physik (Germany)
Senol Yazici, Univ. zu Köln (Germany)
Narsireddy Anugu, Univ. do Porto (Portugal)
Roderick Dembet, Lab. d'Etudes Spatiales et d'Instrumentation en Astrophysique, CNRS, Observervatoire de Paris Meudon (France)
Pierre Fedou, Lab. d'Etudes Spatiales et d'Instrumentation en Astrophysique, CNRS, Observervatoire de Paris Meudon (France)
Sylvestre Lacour, Lab. d'Etudes Spatiales et d'Instrumentation en Astrophysique, CNRS, Observervatoire de Paris Meudon (France)
Jürgen Ott, redlogix Software & System Engineering GmbH (Germany)
Thibaut Paumard, Lab. d'Etudes Spatiales et d'Instrumentation en Astrophysique, CNRS, Observervatoire de Paris Meudon (France)
Vincent Lapeyrere, Lab. d'Etudes Spatiales et d'Instrumentation en Astrophysique, CNRS, Observervatoire de Paris Meudon (France)
Pierre Kervella, Lab. d'Etudes Spatiales et d'Instrumentation en Astrophysique, CNRS, Observervatoire de Paris Meudon (France)
Roberto Abuter, European Southern Observatory (Germany)
Eszter Pozna, European Southern Observatory (Germany)
Frank Eisenhauer, Max-Planck-Institut für extraterrestrische Physik (Germany)
Nicolas Blind, Max-Planck-Institut für extraterrestrische Physik (Germany)
Reinhard Genzel, Max-Planck-Institut für extraterrestrische Physik (Germany)
Stefan Gillessen, Max-Planck-Institut für extraterrestrische Physik (Germany)
Oliver Hans, Max-Planck-Institut für extraterrestrische Physik (Germany)
Marcus Haug, Max-Planck-Institut für extraterrestrische Physik (Germany)
Frank Haussmann, Max-Planck-Institut für extraterrestrische Physik (Germany)
Stefan Kellner, Max-Planck-Institut für extraterrestrische Physik (Germany)
Magdalena Lippa, Max-Planck-Institut für extraterrestrische Physik (Germany)
Oliver Pfuhl, Max-Planck-Institut für extraterrestrische Physik (Germany)
Eckhard Sturm, Max-Planck-Institut für extraterrestrische Physik (Germany)
Johannes Weber, Max-Planck-Institut für extraterrestrische Physik (Germany)
Antonio Amorim, Fundacão da Faculdade de Ciências da Univ. de Lisboa (Portugal)
Wolfgang Brandner, Max-Planck-Institut für Astronomie (Germany)
Karine Rousselet-Perraut, Institut de Planétologie et d’Astrophysique de Grenoble (France)
Guy S. Perrin, Lab. d'Etudes Spatiales et d'Instrumentation en Astrophysique, CNRS, Observervatoire de Paris Meudon (France)
Christian Straubmeier, Univ. zu Köln (Germany)
Markus Schöller, European Southern Observatory (Germany)


Published in SPIE Proceedings Vol. 9146:
Optical and Infrared Interferometry IV
Jayadev K. Rajagopal; Michelle J. Creech-Eakman; Fabien Malbet, Editor(s)

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