The GRAVITY instrument software/high-level software
L. Burtscher
(1)
,
Ekkehard Wieprecht
(1)
,
Thomas Ott
(1)
,
Yitping Kok
(1)
,
Senol Yazici
(2)
,
Narsireddy Anugu
(3)
,
Roderick Dembet
(4, 5)
,
Pierre Fédou
(4, 5)
,
Sylvestre Lacour
(4, 5)
,
Jürgen Ott
(6)
,
Thibaut Paumard
(4, 5)
,
Vincent Lapeyrere
(4, 5)
,
Pierre Kervella
(4, 5)
,
Roberto Abuter
(7)
,
Esther Pozna
(7)
,
Frank Eisenhauer
(1)
,
Nicolas Blind
(1)
,
Reinhard Genzel
(1)
,
S. Gillessen
(1)
,
M. O. Hanski
(1)
,
Marcus Haug
(1)
,
Frank Haussmann
(1)
,
Stefan Kellner
(1)
,
Magdalena Lippa
(1)
,
Oliver Pfuhl
(1)
,
Eckhard Sturm
(1)
,
William J. Weber
(1)
,
Antonio Amorim
(8)
,
Wolfgang Brandner
(9)
,
Karine Rousselet-Perraut
(10)
,
Guy Perrin
(4, 5)
,
Christian Straubmeier
(2)
,
Markus Schoeller
(7)
1
MPE -
Max-Planck-Institut für Extraterrestrische Physik
2 Universität zu Köln = University of Cologne
3 Universidade do Porto = University of Porto
4 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique
5 Haute résolution angulaire en astrophysique
6 Menlo Systems
7 European Southern Observatory (Germany)
8 Lisboa
9 MPIA - Max-Planck-Institut für Astronomie
10 IPAG - Institut de Planétologie et d'Astrophysique de Grenoble
2 Universität zu Köln = University of Cologne
3 Universidade do Porto = University of Porto
4 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique
5 Haute résolution angulaire en astrophysique
6 Menlo Systems
7 European Southern Observatory (Germany)
8 Lisboa
9 MPIA - Max-Planck-Institut für Astronomie
10 IPAG - Institut de Planétologie et d'Astrophysique de Grenoble
Sylvestre Lacour
- Fonction : Auteur
- PersonId : 739267
- IdHAL : sylvestre-lacour
- ORCID : 0000-0002-6948-0263
- IdRef : 129379085
Résumé
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.