Reference : Phase closure image reconstruction for future VLTI instrumentation
Scientific congresses and symposiums : Paper published in a book
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/10144
Phase closure image reconstruction for future VLTI instrumentation
English
Filho, Mercedes E [Ctr. de Astrofisica, Univ. do Porto (Portugal)]
Renard, Stephanie [Observatoire de Lyon (France)]
Garcia, Paulo [Ctr. de Astrofisica, Univ. do Porto (Portugal) and Univ. do Porto (Portugal)]
Duvert, Gilles [Lab. d'Astrophysique de Grenoble, Observatoire de Grenoble (France)]
Duchene, Gaspard [Univ. of California, Berkeley (United States)]
Thiebaut, Eric [Observatoire de Lyon (France)]
Young, John [Cavendish Lab. (United Kingdom)]
Absil, Olivier mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Berger, Jean-Phillipe [Univ. Joseph Fourier, CNRS, Lab. d'Astrophysique de Grenoble (France)]
Beckert, Thomas [Max-Planck Institute for Radioastronomy (Germany)]
Hoenig, Sebastian [Max-Planck Institute for Radioastronomy (Germany)]
Schertl, Dieter [Max-Planck Institute for Radioastronomy (Germany)]
Weigelt, Gerd [Max-Planck Institute for Radioastronomy (Germany)]
Testi, Leonardo [INAF, Osservatorio di Astrofisica di Arcetri (Italy)]
Tatuli, Eric [INAF, Osservatorio di Astrofisica di Arcetri (Italy)]
Borkowski, Virginie [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
De Becker, Michaël mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Sciences spatiales >]
Surdej, Jean mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Aringer, Bernard [Institute of Astrophysics, Univ. of Wien (Austria)]
Hron, Joseph [Institute of Astrophysics, Univ. of Wien (Austria)]
Lebzelter, Thomas [Institute of Astrophysics, Univ. of Wien (Austria)]
Chiavassa, Andrea [Groupe de Recherche en Astronomie et Astrophysique du Languedoc (France)]
Corradi, Romano [Groupe de Recherche en Astronomie et Astrophysique du Languedoc (France)]
Harries, Tim [Univ. of Exeter (United Kingdom)]
1-Jul-2008
Optical and Infrared Interferometry
Schöller, Markus
Danchi, William
Delplancke, Françoise
SPIE
Proceedings of the SPIE, volume 7013
7013
3Z.1-3Z.10
No
No
International
Bellingham
WA, USA
Space Telescopes and Instrumentation 2008: Optical and Infrared Interferometry
23/06/2008 - 28/06/2008
SPIE
Marseille
France
[en] Interferometry
[en] Classically, optical and near-infrared interferometry have relied on closure phase techniques to produce images. Such techniques allow us to achieve modest dynamic ranges. In order to test the feasibility of next generation optical interferometers in the context of the VLTI-spectro-imager (VSI), we have embarked on a study of image reconstruction and analysis. Our main aim was to test the influence of the number of telescopes, observing nights and distribution of the visibility points on the quality of the reconstructed images. Our results show that observations using six Auxiliary Telescopes (ATs) during one complete night yield the best results in general and is critical in most science cases; the number of telescopes is the determining factor in the image reconstruction outcome. In terms of imaging capabilities, an optical, six telescope VLTI-type configuration and ~200 meter baseline will achieve 4 mas spatial resolution, which is comparable to ALMA and almost 50 times better than JWST will achieve at 2.2 microns. Our results show that such an instrument will be capable of imaging, with unprecedented detail, a plethora of sources, ranging from complex stellar surfaces to microlensing events.
Researchers ; Professionals
http://hdl.handle.net/2268/10144
10.1117/12.787877
http://de.arxiv.org/abs/0810.0549
http://adsabs.harvard.edu/abs/2008SPIE.7013E.123F
Copyright 2008 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):

FileCommentaryVersionSizeAccess
Open access
filho2.pdfAuthor preprint1.34 MBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.