Influence of atmospheric turbulence on the performance and design of GENIE

Absil, Olivier; den Hartog, Roland; Gondoin, Philippe; Fabry, Pierre; D'Arcio, Luigi; Wilhelm, Rainer; Gitton, Philippe; Puech, Florence

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Influence of atmospheric turbulence on the performance and design of GENIE

Absil, Olivier; den Hartog, Roland; Gondoin, Philippe et al.

2004 • In 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

Additional URL :

http://adsabs.harvard.edu/abs/2004SPIE.5491.1257A

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since 17 February 2011

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Bibliography

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