Characterization of the ground layer of turbulence at Paranal using a robotic SLODAR system
Characterization of the ground layer of turbulence at Paranal using a robotic SLODAR system
复制标题
使用机器人 SLODAR 系统表征帕拉纳尔地面湍流层
DOI:
10.1093/mnras/stz3498
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发表时间:
2020
影响因子:
4.8
通讯作者:
Butterley T
中科院分区:
文献类型:
--
作者:
Butterley T
We describe the implementation of a robotic SLODAR instrument at the Cerro Paranal observatory. The instrument measures the vertical profile of the optical atmospheric turbulence strength, in 8 resolution elements, to a maximum altitude ranging between 100 and 500 m. We present statistical results of measurements of the turbulence profile on a total of 875 nights between 2014 and 2018. The vertical profile of the ground layer of turbulence is very varied, but in the median case most of the turbulence strength in the ground layer is concentrated within the first 50 m altitude, with relatively weak turbulence at higher altitudes up to 500 m. We find good agreement between measurements of the seeing angle from the SLODAR and from the Paranal DIMM seeing monitor, and also for seeing values extracted from the Shack–Hartmann active optics sensor of Very Large Telescope (VLT) Unit Telescope 1 (UT1), adjusting for the height of each instrument above ground level. The SLODAR data suggest that a median improvement in the seeing angle from 0.689 to 0.481 arcsec at wavelength 500 nm would be obtained by fully correcting the ground-layer turbulence between the height of the UTs (taken as 10 m) and altitude 500 m.
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DOI:
10.1111/j.1365-2966.2009.15409.x
发表时间:
2009
影响因子:
4.8
作者:
R. Wilson;T. Butterley;M. Sarazin
通讯作者:
M. Sarazin
DOI:
10.1017/s1743921312017036
发表时间:
2012
期刊:
Proceedings of the International Astronomical Union
影响因子:
--
作者:
E. Aristidi;A. Agabi;E. Fossat;A. Ziad;Lyu Abe;E. Bondoux;G. Bouchez;Z. Challita;F. Jeanneaux;D. Mékarnia;D. Petermann;C. Pouzenc
通讯作者:
C. Pouzenc
DOI:
10.1046/j.1365-8711.2003.06231.x
发表时间:
2002
影响因子:
4.8
作者:
A. Tokovinin;S. Baumont;J. Vasquez
通讯作者:
J. Vasquez
影响因子:
4.8
作者:
Gianluca Lombardi;M. Sarazin
通讯作者:
M. Sarazin
影响因子:
4.8
作者:
E. Masciadri;Gianluca Lombardi;F. Lascaux
通讯作者:
F. Lascaux