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Proceedings Paper

The LBT real-time based control software to mitigate and compensate vibrations
Author(s): J. Borelli; J. Trowitzsch; M. Brix; M. Kürster; W. Gässler; T. Bertram; F. Briegel
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Paper Abstract

The Large Binocular Telescope (LBT) uses two 8.4 meters active primary mirrors and two adaptive secondary mirrors on the same mounting to take advantage of its interferometric capabilities. Both applications, interferometry and AO, are sensitive to vibrations. Several measurement campaigns have been carried out at the LBT and their results strongly indicate that a vibration monitoring system is required to improve the performance of LINC-NIRVANA, LBTI, and ARGOS, the laser guided ground layer adaptive optic system. Currently, a control software for mitigation and compensation of the vibrations is being designed. A complex set of algorithms collects real-time vibration data, archiving it for further analysis, and in parallel, generating the tip-tilt and optical path difference (OPD) data for the control loop of the instruments. A real-time data acquisition device equipped with embedded real-time Linux is used in our systems. A set of quick-look tools is currently under development in order to verify if the conditions at the telescope are suitable for interferometric/adaptive observations.

Paper Details

Date Published: 19 July 2010
PDF: 8 pages
Proc. SPIE 7740, Software and Cyberinfrastructure for Astronomy, 774005 (19 July 2010); doi: 10.1117/12.857436
Show Author Affiliations
J. Borelli, Max-Planck-Institut für Astronomie (Germany)
J. Trowitzsch, Max-Planck-Institut für Astronomie (Germany)
M. Brix, Max-Planck-Institut für Astronomie (Germany)
M. Kürster, Max-Planck-Institut für Astronomie (Germany)
W. Gässler, Max-Planck-Institut für Astronomie (Germany)
T. Bertram, Max-Planck-Institut für Astronomie (Germany)
F. Briegel, Max-Planck-Institut für Astronomie (Germany)

Published in SPIE Proceedings Vol. 7740:
Software and Cyberinfrastructure for Astronomy
Nicole M. Radziwill; Alan Bridger, Editor(s)

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