De-biasing interferometric visibilities in VLTI-AMBER data of low SNR observations

2007/11/30 by G. Li Causi, S. Antoniucci, E. Tatulli · 2 citations
Earth and Planetary Sciences · Physics and Astronomy · #Adaptive optics and wavefront sensing #Data reduction #Error analysis #Geophysics and Gravity Measurements #Interferometry #Radio Astronomy Observations and Technology #Reduction (mathematics) #Variable (mathematics) #Visibility #astro-ph

paper · pdf · doi:10.1051/0004-6361:20077629

7 pages, 9 figures

arxiv created 2007/11/30 · openalex publication_date 2007/12/12 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Aims. We have found that the interferometric visibilities of VLTI-AMBER observations, extracted via the standard reduction package, are significantly biased when faint targets are concerned. The visibility biases derive from a time variable fringing effect (correlated noise) appearing on the detector.

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