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Influence of atmospheric turbulence on the performance and design of GENIE
Absil, Olivier; den Hartog, Roland; Gondoin, Philippe et al.
2004In Traub, Wesley; Monnier, John; Schöller, Markus (Eds.) New Frontiers in Stellar Interferometry
 

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Keywords :
Nulling interferometry; Darwin-GENIE; Atmospheric turbulence; Modeling; Instrumentation; Servo loops
Abstract :
[en] Two competitive design studies for the Ground-based European Nulling Interferometer Experiment (GENIE) have been initiated by the European Space Agency and the European Southern Observatory in November 2003. The GENIE instrument will most probably consist of a two-telescope Bracewell interferometer, using the 8-m Unit Telescopes and/or the 1.8-m Auxiliary Telescopes of the VLTI, and working in the infrared L' band (3.5 - 4.1 microns). A critical issue affecting the overall performance of the instrument is its capability to compensate for the phase and intensity fluctuations produced by the atmospheric turbulence. In this paper, we present the basic principles of phase and intensity control by means of real-time servo loops in the context of GENIE. We then propose a preliminary design for these servo loops and estimate their performance using GENIEsim, the science simulation software for the GENIE instrument.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Absil, Olivier  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
den Hartog, Roland
Gondoin, Philippe
Fabry, Pierre
D'Arcio, Luigi
Wilhelm, Rainer
Gitton, Philippe
Puech, Florence
Language :
English
Title :
Influence of atmospheric turbulence on the performance and design of GENIE
Publication date :
01 October 2004
Event name :
New Frontiers in Stellar Interferometry
Event organizer :
SPIE
Event place :
Glasgow, United Kingdom
Event date :
du 21 au 25 juin 2004
Audience :
International
Main work title :
New Frontiers in Stellar Interferometry
Editor :
Traub, Wesley
Monnier, John
Schöller, Markus
Publisher :
SPIE, Bellingham, United States - Washington
Collection name :
Proceedings of the SPIE, volume 5491
Pages :
1257-1265
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since 17 February 2011

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