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First steps in the development of a piston sensor for large aperture space telescopes
Guerri, Géraldine; Roose, Stéphane; Stockman, Yvan et al.
2010In Oschmann, J.; Clampin, M.; MacEwen, H. (Eds.) Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave
 

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Abstract :
[en] Nowadays spaceborne missions for astronomy or Earth imaging need high resolution observation which implies the development of large aperture telescopes. This can be achieved by multi-aperture telescopes or large segmented telescopes. One of the major issues is the phasing of the sub-apertures or the segments of such telescopes. A cophasing sensor is therefore mandatory to achieve the ultimate resolution of these telescopes. In this framework, Liège Space Center (CSL) concern is the development of a compact cophasing sensor to phase new large lightweight segmented mirrors for future space telescopes. The sensor concept has its origins in new phase retrieval algorithms which have been recently developed. In this paper, we outline the concept and the experimental validation results of our piston sensor breadboard which is currently under development in our laboratory. Finally, future prospects and further developments of our experiment are presented.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Guerri, Géraldine ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Roose, Stéphane  ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Stockman, Yvan ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Mazzoli, Alexandra  ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Surdej, Jean  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Defise, Jean-Marc ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Satellites, missions et instruments spatiaux
Language :
English
Title :
First steps in the development of a piston sensor for large aperture space telescopes
Publication date :
01 July 2010
Audience :
International
Main work title :
Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave
Editor :
Oschmann, J.
Clampin, M.
MacEwen, H.
Publisher :
SPIE
Collection name :
Proceedings of the SPIE, volume 7731
Pages :
165
Available on ORBi :
since 01 March 2011

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