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Proceedings Paper

Estimating visibility amplitudes with the PRIMA fringe trackers
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Paper Abstract

The quality of the tracking performed by the fringe sensor units (FSUs) of PRIMA, the ESO’s dual feed facility for the VLTI, is affected by the angular separation between the two objects being observed simultaneously, the detector integration time (DIT) and the atmospheric observational conditions. We describe the algorithm we developed to compute visibilities from the FSU data and discuss their validity for the study on the angular anisoplanatism measured through the dependence of the visibility amplitudes on the angular separation.

Paper Details

Date Published: 12 September 2012
PDF: 9 pages
Proc. SPIE 8445, Optical and Infrared Interferometry III, 844522 (12 September 2012); doi: 10.1117/12.925445
Show Author Affiliations
Nuno Gomes, SIM (Portugal)
European Southern Observatory (Germany)
Univ. do Porto (Portugal)
Christian Schmid, European Southern Observatory (Germany)
Johannes Sahlmann, Observatoire de Genève, Univ. de Genève (Switzerland)
Sérge Ménardi, European Southern Observatory (Germany)
Roberto Abuter, European Southern Observatory (Germany)
Antoine Mérand, European Southern Observatory (Chile)
Françoise Delplancke, European Southern Observatory (Germany)

Published in SPIE Proceedings Vol. 8445:
Optical and Infrared Interferometry III
Françoise Delplancke; Jayadev K. Rajagopal; Fabien Malbet, Editor(s)

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