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The statistics of atmospheric turbulence at Maunakea measured by RAVEN

Ono, Y. H. and Correia, Carlos M. and Lardiére, O. and Andersen, D. R. and Oya, S. and Akiyama, M. and Gamroth, D. and Jackson, K. and Martin, O. and Guesalaga, A. and Bradley, C. (2016) The statistics of atmospheric turbulence at Maunakea measured by RAVEN. In: Adaptive Optics Systems V. Proceedings of SPIE. No.9909. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 99093E. ISBN 978-1-5106-0198-7. http://resolver.caltech.edu/CaltechAUTHORS:20161202-100729857

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Abstract

Prior statistical knowledge of the turbulence such as turbulence strength, layer altitudes and the outer scale is essential for atmospheric tomography in adaptive-optics (AO). These atmospheric parameters can be estimated from measurements of multiple Shack-Hartmann wave-front sensors (SH-WFSs) by the SLOpe Detection And Ranging (SLODAR). In this paper, we present the statistics of the vertical CN^2 and the outer scale L_0 at Maunakea in Hawaii estimated from 60 hours telemetry data in total from multiple SH-WFSs of RAVEN, which is an on-sky multi-object AO demonstrator tested on the Subaru telescope. The mean seeing during the RAVEN on-sky observations is 0.475 arcsec, and 55% turbulence is below 1.5 km. The vertical profile of CN^2 from the RAVEN SLODAR is consistent with the profiles from CFHT DIMM and MASS, and TMT site characterization.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1117/12.2232359DOIArticle
http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2540903PublisherArticle
Additional Information:© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE). The research leading to these results received the support of the JSPS Grant-in-Aid for JSPS Fellows (15J02510), the JSPS Grant-in- Aid for Young Scientist (B) (23740140), the JSPS Grant-in-Aid for Scientific Research (B) (26287027) and the A*MIDEX project (no. ANR-11-IDEX-0001-02) funded by the Investissements d'Avenir French Government program, managed by the French National Research Agency (ANR).
Funders:
Funding AgencyGrant Number
Japan Society for the Promotion of Science (JSPS)15J02510
Japan Society for the Promotion of Science (JSPS)23740140
Japan Society for the Promotion of Science (JSPS)26287027
Agence Nationale pour la Recherche (ANR)ANR-11-IDEX-0001-02
Subject Keywords:Atmospheric turbulence, RAVEN, SLODAR
Record Number:CaltechAUTHORS:20161202-100729857
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20161202-100729857
Official Citation:Y. H. Ono ; Carlos M. Correia ; O. Lardière ; D. R. Andersen ; S. Oya ; M. Akiyama ; D. Gamroth ; K. Jackson ; O. Martin ; A. Guesalaga ; C. Bradley; The statistics of atmospheric turbulence at Maunakea measured by RAVEN. Proc. SPIE 9909, Adaptive Optics Systems V, 99093E (July 27, 2016); doi:10.1117/12.2232359.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:72523
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:02 Dec 2016 22:45
Last Modified:02 Dec 2016 22:45

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