24 July 2014 The GRAVITY instrument software/high-level software
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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.
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Leonard Burtscher, Leonard Burtscher, Ekkehard Wieprecht, Ekkehard Wieprecht, Thomas Ott, Thomas Ott, Yitping Kok, Yitping Kok, Senol Yazici, Senol Yazici, Narsireddy Anugu, Narsireddy Anugu, Roderick Dembet, Roderick Dembet, Pierre Fedou, Pierre Fedou, Sylvestre Lacour, Sylvestre Lacour, Jürgen Ott, Jürgen Ott, Thibaut Paumard, Thibaut Paumard, Vincent Lapeyrere, Vincent Lapeyrere, Pierre Kervella, Pierre Kervella, Roberto Abuter, Roberto Abuter, Eszter Pozna, Eszter Pozna, Frank Eisenhauer, Frank Eisenhauer, Nicolas Blind, Nicolas Blind, Reinhard Genzel, Reinhard Genzel, Stefan Gillessen, Stefan Gillessen, Oliver Hans, Oliver Hans, Marcus Haug, Marcus Haug, Frank Haussmann, Frank Haussmann, Stefan Kellner, Stefan Kellner, Magdalena Lippa, Magdalena Lippa, Oliver Pfuhl, Oliver Pfuhl, Eckhard Sturm, Eckhard Sturm, Johannes Weber, Johannes Weber, Antonio Amorim, Antonio Amorim, Wolfgang Brandner, Wolfgang Brandner, Karine Rousselet-Perraut, Karine Rousselet-Perraut, Guy S. Perrin, Guy S. Perrin, Christian Straubmeier, Christian Straubmeier, Markus Schöller, Markus Schöller, } "The GRAVITY instrument software/high-level software", Proc. SPIE 9146, Optical and Infrared Interferometry IV, 91462B (24 July 2014); doi: 10.1117/12.2055928; https://doi.org/10.1117/12.2055928
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