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ALADDIN: an optimized nulling ground-based demonstrator for DARWIN
Coudé du Foresto, V.; Absil, Olivier; Swain, M. et al.
2006In Monnier, John; Schöller, Markus; Danchi, William (Eds.) Advances in Stellar Interferometry
 

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Abstract :
[en] The ESA Darwin space mission will require a ground based precursor to i/ demonstrate nulling interferometry in an operational context and ii/ carry out some precursor science, such as the characterization of the level of exozodiacal light around the main Darwin targets. These are the stated objectives of the GENIE nulling instrument that was studied for the VLTI. We argue here that the same objectives can be met in a more efficient way by an antarctic-based nulling experiment. The ALADDIN mission concept is an integrated L-band nulling breadboard with relatively modest collectors (1m) and baseline (40m). Because of its privileged location, this is suffcient to achieve a sensitivity (in terms of detectable zodi levels) which is 1.6 to 3.5 times better than GENIE at the VLTI, bringing it below the 20-zodi threshold value identified to carry out the Darwin precursor science. The integrated design enables top-level optimization and full access to the light collectors for the duration of the experiment, while reducing the complexity of the nulling breadboard.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Coudé du Foresto, V.;  LESIA, Observatoire de Paris (France)
Absil, Olivier  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Swain, M.;  Max Planck Institute for Astronomy (Germany)
Vakili, F.;  LUAN, Univ. de Nice Sophia-Antipolis (France)
Barillot, M.;  Alcatel Alenia Space (France)
Language :
English
Title :
ALADDIN: an optimized nulling ground-based demonstrator for DARWIN
Publication date :
01 July 2006
Event name :
Advances in Stellar Interferometry
Event organizer :
SPIE
Event place :
Orlando, United States - Florida
Event date :
du 24 au 31 mai 2006
Audience :
International
Main work title :
Advances in Stellar Interferometry
Editor :
Monnier, John
Schöller, Markus
Danchi, William
Publisher :
SPIE, Bellingham, United States - Washington
Collection name :
Proceedings of the SPIE, volume 6268
Pages :
10.1-10.5
Commentary :
6268
Available on ORBi :
since 25 January 2012

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