The LBT real-time based control software to mitigate and compensate vibrations

J. Borelli; J. Trowitzsch; M. Brix; M. Kürster; W. Gässler; T. Bertram; F. Briegel

doi:10.1117/12.857436

19 July 2010 The LBT real-time based control software to mitigate and compensate vibrations

J. Borelli, J. Trowitzsch, M. Brix, M. Kürster, W. Gässler, T. Bertram, F. Briegel

Proceedings Volume 7740, Software and Cyberinfrastructure for Astronomy; 774005 (2010) https://doi.org/10.1117/12.857436
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

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.

Citation Download Citation

J. Borelli, J. Trowitzsch, M. Brix, M. Kürster, W. Gässler, T. Bertram, and F. Briegel "The LBT real-time based control software to mitigate and compensate vibrations", Proc. SPIE 7740, Software and Cyberinfrastructure for Astronomy, 774005 (19 July 2010); https://doi.org/10.1117/12.857436

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