Full Content is available to subscribers

Subscribe/Learn More  >
Proceedings Article

System overview of the VLTI Spectro-Imager

[+] Author Affiliations
L. Jocou, J. P. Berger, F. Malbet, P. Kern, G. Zins, G. Duvert, K. Perraut, O. Absil, P. Rabou, E. Le Coarer, P. Feautrier, G. Duchene, M. Benisty, A. Chelli, A. Delboulbé

Univ. J. Fourier, CNRS, Lab. d'Astrophysique de l'Observatoire de Grenoble (France)

U. Beckmann, G. Weigelt

Max-Planck-Institute for Radioastronomy (Germany)

D. Lorenzetti, G. Li Causi, D. Loreggia

INAF, Osservatorio di Astrofisica di Roma (Italy)

L. Corcione, S. Ligori

INAF, Osservatorio Astrofisico di Torino (Italy)

D. Buscher, J. Young, C. Haniff

Cavendish Lab., Univ. of Cambridge (United Kingdom)

M. Gai

INAF/Osservatorio Astrofisico di Torino (Italy)

P. Labeye

CEA/LETI (France)

P. Garcia

Ctr. for Astrophysics, Univ. of Porto (Portugal)

J. Lima, A. Amorim

Univ. de Lisboa (Portugal)

J. Rebordao

Instituto Nacional de Engenharia, Tecnologia e Inovação (Portugal)

J. B. Le Bouquin

European Southern Observatory (Chile)

E. Herwats

Univ. J. Fourier, CNRS, Lab. d'Astrophysique de l'Observatoire de Grenoble (France) and Institut d'Astrophysique et de Géophysique (Belgium)

Proc. SPIE 7013, Optical and Infrared Interferometry, 70132Y (July 14, 2008); doi:10.1117/12.789154
Text Size: A A A
From Conference Volume 7013

  • Optical and Infrared Interferometry
  • Marseille, France | June 23, 2008

abstract

The VLTI Spectro Imager project aims to perform imaging with a temporal resolution of 1 night and with a maximum angular resolution of 1 milliarcsecond, making best use of the Very Large Telescope Interferometer capabilities. To fulfill the scientific goals (see Garcia et. al.), the system requirements are: a) combining 4 to 6 beams; b) working in spectral bands J, H and K; c) spectral resolution from R= 100 to 12000; and d) internal fringe tracking on-axis, or off-axis when associated to the PRIMA dual-beam facility. The concept of VSI consists on 6 sub-systems: a common path distributing the light between the fringe tracker and the scientific instrument, the fringe tracker ensuring the co-phasing of the array, the scientific instrument delivering the interferometric observables and a calibration tool providing sources for internal alignment and interferometric calibrations. The two remaining sub-systems are the control system and the observation support software dedicated to the reduction of the interferometric data. This paper presents the global concept of VSI science path including the common path, the scientific instrument and the calibration tool. The scientific combination using a set of integrated optics multi-way beam combiners to provide high-stability visibility and closure phase measurements are also described. Finally we will address the performance budget of the global VSI instrument. The fringe tracker and scientific spectrograph will be shortly described.

© (2008) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

L. Jocou ; J. P. Berger ; F. Malbet ; P. Kern ; U. Beckmann, et al.
"System overview of the VLTI Spectro-Imager", Proc. SPIE 7013, Optical and Infrared Interferometry, 70132Y (July 14, 2008); doi:10.1117/12.789154; http://dx.doi.org/10.1117/12.789154


Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).

Figures

Tables

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.