PERSONAL DE APOYO
VRECH Ruben Hector
artículos
Título:
European Extremely Large Telescope Site Characterization II - High Angular Resolution Parameters
Autor/es:
VÁZQUEZ RAMIÓ; JEAN VERNIN; CASIANA MUÑOZ-TUÑÓN; MARC SARAZIN; ANTONIA M. VARELA; HERVÉ TRINQUET; JOSÉ MIGUEL DELGADO; JESÚS JIMÉNEZ FUENSALIDA; MARCOS REYES; ABDELMAJID BENHIDA; ZOUHAIR BENKHALDOUN; DIEGO GARCIA LAMBAS; YOUSSEF HACH; M. LAZREK; GIANLUCA LOMBARDI; JULIO NAVARRETE; PABLO RECABARREN; VICTOR RENZI; RUBÉN VRECH
Revista:
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
Editorial:
UNIV CHICAGO PRESS
Referencias:
Lugar: Chicago; Año: 2012 vol. 124 p. 868 - 884
ISSN:
0004-6280
Resumen:
This is the second article of a series devoted to European Extremely
Large Telescope (E-ELT) site characterization. In this article we
present the main properties of the parameters involved in high angular
resolution observations from the data collected in the site testing
campaign of the E-ELT during the design study (DS) phase. Observations
were made in 2008 and 2009, in the four sites selected to shelter the
future E-ELT (characterized under the ELT-DS contract): Aklim mountain
in Morocco, Observatorio del Roque de los Muchachos (ORM) in Spain,
Macón range in Argentina, and Cerro Ventarrones in Chile. The same
techniques, instruments, and acquisition procedures were taken on each
site. A multiple aperture scintillation sensor (MASS) and a differential
image motion monitor (DIMM) were installed at each site. Global
statistics of the integrated seeing, the free atmosphere seeing, the
boundary layer seeing, and the isoplanatic angle were studied for each
site, and the results are presented here. In order to estimate other
important parameters, such as the coherence time of the wavefront and
the overall parameter ?coherence étendue,? additional information of
vertical profiles of the wind speed was needed. Data were retrieved from
the National Oceanic and Atmospheric Administration (NOAA) archive.
Ground wind speed was measured by automatic weather stations (AWS). More
aspects of the turbulence parameters, such as their seasonal trend,
their nightly evolution, and their temporal stability, were also
obtained and analyzed.