Reference : ALADDIN: an optimized nulling ground-based demonstrator for DARWIN
Scientific congresses and symposiums : Paper published in a book
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
ALADDIN: an optimized nulling ground-based demonstrator for DARWIN
Coudé du Foresto, V. [LESIA, Observatoire de Paris (France)]
Absil, Olivier mailto [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)]
Advances in Stellar Interferometry
Monnier, John
Schöller, Markus
Danchi, William
Proceedings of the SPIE, volume 6268
Advances in Stellar Interferometry
du 24 au 31 mai 2006
[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.
Researchers ; Professionals
Copyright 2006 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

File(s) associated to this reference

Fulltext file(s):

Open access
6268_37.PDFPublisher postprint305.23 kBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.