Comparison of atmosphere profilers at Paranal and atmosphere parameters statistics: AOF-profiler, STEREO-SCIDAR, MASS-DIMM, LGS-WFS

Pierre Haguenauer; Andres Guesalaga; Timothy Butterley

doi:10.1117/12.2562267

13 December 2020 Comparison of atmosphere profilers at Paranal and atmosphere parameters statistics: AOF-profiler, STEREO-SCIDAR, MASS-DIMM, LGS-WFS

Pierre Haguenauer, Andres Guesalaga, Timothy Butterley

Author Affiliations +

Proceedings Volume 11448, Adaptive Optics Systems VII; 114481K (2020) https://doi.org/10.1117/12.2562267
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

Adaptive optics (AO) techniques like laser tomography adaptive optics (LTAO) and multi-conjugated adaptive optics (MCAO) are becoming more and more used in the development of instrumentation for the existing 8-m class telescopes and future extremely large telescopes (ELT). Achieving the required level of AO correction over wide field of view requires the knowledge of the turbulence strength vs the altitude, first during the design phase of the instruments to ensure they match the needed performances, and then during the on-sky operation to optimize the AO control according to the atmospheric conditions. Obtaining reliable measurements of the turbulence in three dimensions is thus of high importance, today and in the future. The Paranal Observatory gives access to three atmosphere profilers and one atmosphere monitor on one single site. The possibility to obtain simultaneous data on independent systems is a great opportunity to compare their results and evaluate the advantages of each method. We present the results of statistical analysis of data coming from these systems, obtained in different periods and with various atmosphere conditions. From this analysis, we can draw conclusions on conditions needed for a useful comparison of the profilers and show the possible needed attempt to be made on aligning their assumptions and thus the provided parameters.

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Citation Download Citation

Pierre Haguenauer, Andres Guesalaga, and Timothy Butterley "Comparison of atmosphere profilers at Paranal and atmosphere parameters statistics: AOF-profiler, STEREO-SCIDAR, MASS-DIMM, LGS-WFS", Proc. SPIE 11448, Adaptive Optics Systems VII, 114481K (13 December 2020); https://doi.org/10.1117/12.2562267

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