The GRAVITY instrument software / High-level software
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.
Keywords
Cite
@article{arxiv.1501.05822,
title = {The GRAVITY instrument software / High-level software},
author = {Leonard Burtscher and Ekkehard Wieprecht and Thomas Ott and Yitping Kok and Senol Yazici and Narsireddy Anugu and Roderick Dembet and Pierre Fedou and Sylvestre Lacour and Juergen Ott and Thibaut Paumard and Vincent Lapeyrere and Pierre Kervella and Roberto Abuter and Eszter Pozna and Frank Eisenhauer and Nicolas Blind and Reinhard Genzel and Stefan Gillessen and Oliver Hans and Marcus Haug and Frank Haussmann and Stefan Kellner and Magdalena Lippa and Oliver Pfuhl and Eckhard Sturm and Johannes Weber and Antonio Amorim and Wolfgang Brandner and Karine Rousselet-Perraut and Guy S. Perrin and Christian Straubmeier and Markus Schoeller},
journal= {arXiv preprint arXiv:1501.05822},
year = {2015}
}
Comments
8 pages, 7 figures, published in Proc. SPIE 9146, Optical and Infrared Interferometry IV, 91462B