2008A&A...479..589L


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.03CET10:57:16

2008A&A...479..589L - Astronomy and Astrophysics, volume 479, 589-595 (2008/2-4)

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

LI CAUSI G., ANTONIUCCI S. and TATULLI E.

Abstract (from CDS):

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. We have developed a method to correct this bias that consists in a subtraction of the extra power caused by such correlated noise, so that the real power spectrum at the spatial frequencies of the fringing artifact can be restored. This pre-processing procedure is implemented in a software program called AMDC, available to the community, which is to be run before the standard reduction package.
Result. obtained on simulated and real observations are presented and discussed.

Abstract Copyright:

Journal keyword(s): instrumentation: interferometers - instrumentation: detectors - methods: data analysis - techniques: interferometric

CDS comments: Table 1 HD 2379 is a misprint for HR 2379.

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 HD 46184 PM* 06 31 23.0432122698 -12 23 31.043197068   6.425 5.153     K1III 47 0
2 V* Z CMa Ae* 07 03 43.1588002461 -11 33 06.230351311 10.51 9.99 8.80     B5/8eq+F5/7 537 3

    Equat.    Gal    SGal    Ecl

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