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Proceedings Paper

Long-term performance of the VLT UT active optics system
Author(s): Christian Stephan; Stéphane Guisard; Pierre Bourget
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Paper Abstract

For large telescopes, like the Very Large Telescope (VLT) unit telescopes, it is compulsory to use an effective and reliable Active Optics system in order to guarantee the optimal optical performance. The active optics ensures that the actual wavefront aberrations introduced by the telescope itself are kept as low as possible. In order to evaluate the longterm performance of this system, an extended timeseries data analysis for all four unit telescopes (UT) was performed. The results presented in this paper demonstrate that the VLT UT active optics system works very stable and reliable with no significant performance degradation over time.

Paper Details

Date Published: 27 July 2016
PDF: 14 pages
Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 99064K (27 July 2016); doi: 10.1117/12.2231892
Show Author Affiliations
Christian Stephan, European Southern Observatory (Chile)
Stéphane Guisard, European Southern Observatory (Germany)
Pierre Bourget, European Southern Observatory (Chile)

Published in SPIE Proceedings Vol. 9906:
Ground-based and Airborne Telescopes VI
Helen J. Hall; Roberto Gilmozzi; Heather K. Marshall, Editor(s)

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