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ALADDIN nulling instrument

Published online by Cambridge University Press:  24 December 2009

L. Spinoglio ,
N. Epchtein ,
M. Barillot ,
V. Coudé du Foresto ,
J. Surdej ,
O. Absil ,
C. Jamar  and
E. Di Folco
M. Barillot
Affiliation:
Thales Alenia Space, Cannes-La Bocca, France
V. Coudé du Foresto
Affiliation:
LESIA, Observatoire de Paris-Meudon, France
J. Surdej
Affiliation:
Department of Astrophysics, Geophysics and oceanography, University of Liège, Belgium
O. Absil
Affiliation:
Department of Astrophysics, Geophysics and oceanography, University of Liège, Belgium
C. Jamar
Affiliation:
AMOS, Liège, Belgium
E. Di Folco
Affiliation:
LESIA, Observatoire de Paris-Meudon, France
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Abstract

The ALADDIN project aims at detecting warm dust populations around nearby main sequence stars. In order to achieve the significantly improved sensitivity with respect to existing instruments, the architecture of the system is focused and optimised for the mission: ALADDIN implements the nulling interferometry technique at the focal plane of a 2-telescope interferometer mounted on a rotating structural beam.
Concerning the beam combining nulling instrument, the ALADDIN design is inherited from a Definition Study of the VLTI/GENIE instrument. In this paper, we demonstrate how the ALADDIN instrument preliminary definition can be made simpler and more representative of a space instrument than GENIE thanks to both the outstanding atmospheric properties of Dome C and the dedicated architecture of the system. Finally, we discuss the compatibility of the instrument with the Antarctic environment and constraints, and underline the experimental and industrial know-how learnt from the MAII and PERSEE nulling breadboards in which our Team is also involved.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 40: 3rd ARENA Conference: An Astronomical Observatory at CONCORDIA (Dome C, Antarctica) , 2010 , pp. 251 - 256
Copyright
© EAS, EDP Sciences, 2010

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References

Coudé du Foresto V., et al., 2010, this proceedings
Absil, O., et al., 2010, this proceedings
Gondoin, P., et al., 2004, Proc. SPIE, 5491, 775 CrossRef
Absil, O., et al., 2004, Proc. SPIE, 5491, 1257 CrossRef
Buisset, C., et al., 2007, Appl. Opt., 46, 7817 CrossRef