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14 December 2020 Dimensioning adaptive optics for future VLTI projects
Fabien Patru, Florentin Millour, Olivier Lai, Marcel Carbillet, Frank Eisenhauer, Stefan Gillessen, Maximilian Haase, Michael Hartl, Frank Haussmann, Jean-Baptiste Le Bouquin, Dieter Lutz, Christopher Mandla, Nikhil More, Thomas Ott, Thibaut Paumard, Christian Rau, Josef Schubert, Ekkehard Wieprecht, Julien Woillez, Senol Yazici
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Proceedings Volume 11448, Adaptive Optics Systems VII; 1144871 (2020) https://doi.org/10.1117/12.2562433
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only
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Abstract
The European Southern Observatory gives the opportunity to develop new third generation instruments for the Very Large Telescope Interferometer. Therefore, adaptive optics systems need to be upgraded, either for NAOMI on a 1.8-m auxiliary telescope or for MACAO on a 8-m unit telescope. It enables to access to new science cases such as active galactic nuclei with the GRAVITY+ project. We study here the requirements of such AO upgrade by increasing the number of sub-apertures of the wave-front sensor and the number of actuators of the deformable mirror. We evaluate the needs for a high-Strehl mode in the visible and near infrared wavelengths in various conditions of observation. We present numerical simulations to quantify the performance. We show that a moderate upgrade of NAOMI, and a significant upgrade of MACAO can enable both better dynamic range and sensitivity with the VLTI.
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Fabien Patru, Florentin Millour, Olivier Lai, Marcel Carbillet, Frank Eisenhauer, Stefan Gillessen, Maximilian Haase, Michael Hartl, Frank Haussmann, Jean-Baptiste Le Bouquin, Dieter Lutz, Christopher Mandla, Nikhil More, Thomas Ott, Thibaut Paumard, Christian Rau, Josef Schubert, Ekkehard Wieprecht, Julien Woillez, and Senol Yazici "Dimensioning adaptive optics for future VLTI projects", Proc. SPIE 11448, Adaptive Optics Systems VII, 1144871 (14 December 2020); https://doi.org/10.1117/12.2562433
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KEYWORDS
Adaptive optics
Numerical simulations
Wavefront sensors
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