Correction of finite spatial and temporal sampling effects in stereo-SCIDAR

Timothy Butterley; Marc Sarazin; Miska Le Louarn; James Osborn; Ollie J. D. Farley

doi:10.1117/12.2562559

13 December 2020 Correction of finite spatial and temporal sampling effects in stereo-SCIDAR

Timothy Butterley, Marc Sarazin, Miska Le Louarn, James Osborn, Ollie J. D. Farley

Proceedings Volume 11448, Adaptive Optics Systems VII; 114481W (2020) https://doi.org/10.1117/12.2562559
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

Stereo scintillation detection and ranging (S-SCIDAR) is a development of the well-established SCIDAR turbulence profiling technique. An S-SCIDAR instrument has been installed at the focus of one of the 1.8m Auxiliary Telescopes at Paranal observatory since April 2016. We discuss the limitations imposed by the Paranal S-SCIDAR instrument’s finite pixel size and exposure time. We present Monte Carlo simulation results quantifying the errors due to finite spatial and temporal sampling. We have reprocessed the existing S-SCIDAR dataset to compensate for these error sources; we discuss the impact of these corrections on the measured turbulence statistics.

Conference Presentation

Citation Download Citation

Timothy Butterley, Marc Sarazin, Miska Le Louarn, James Osborn, and Ollie J. D. Farley "Correction of finite spatial and temporal sampling effects in stereo-SCIDAR", Proc. SPIE 11448, Adaptive Optics Systems VII, 114481W (13 December 2020); https://doi.org/10.1117/12.2562559

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