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

Butterley, Timothy and Sarazin, Marc and Le Louarn, Miska and Osborn, James and Farley, Ollie J. D. (2020) 'Correction of finite spatial and temporal sampling effects in stereo-SCIDAR.', SPIE Astronomical Telescopes + Instrumentation 2020 Online, 13 - 18 Dec 2020.


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.

Item Type:Conference item (Paper)
Full text:(AM) Accepted Manuscript
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Publisher statement:Copyright 2020 (year) Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Date accepted:No date available
Date deposited:02 November 2021
Date of first online publication:13 December 2020
Date first made open access:02 November 2021

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