Abstract

In order to characterize the atmospheric optical turbulence at Ali observatory, we have deployed multi-instruments, which are able to continuously monitor the optical turbulence for site evaluation. These instruments include the DIMM, MASS, Single Star SCIDAR and Polaris seeing monitor, and we also plan to install SNODAR and Micro-thermal sensors for the turbulence on surface layer by the end of this year. This configuration allows us to collect a substantial database and make cross-comparison of the results. We have successfully obtained the profiles of optical turbulence and wind speed with Single Star SCIDAR, as well as the key parameters for adaptive optics application, such as seeing, coherence time, and isoplanatic angle. The DIMM seeing measurements are also carried out simultaneously. The median seeing measured by the DIMM and SSS in 2013 is 0.69 and 0.79 arcsec, respectively.

Details

Title
Multi-instrument characterization of optical turbulence at the Ali observatory
Author
L-Y, Liu 1 ; Y-Q, Yao 1 ; Vernin, J 2 ; H-S, Wang 1 ; Yin, J 1 ; Qian, X 1 

 National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China 
 Université de Nice-Sophia Antipolis, Observatoire de la Côte d'Azur, CNRS-UMR7293, Laboratoire Lagrange, 06108 Nice Cedex 2, France 
Publication year
2015
Publication date
Apr 2015
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2576293225
Copyright
© 2015. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.