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Proceedings Paper

AMBER performances: signal-to-noise ratio analysis
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Paper Abstract

We present the method which computes the expected signal-to- noise ratio of the observations carried out by AMBER, the near-infrared focal instrument of the VLTI. We include photon noise, detector read-out noise, thermal noise as well as the instrument OPD stability and Strehl fluctuations. We believe that this algorithm can be extended to any other optical interferometers. The performances are computed in a variety of conditions: size of the apertures (8-m Unit telescopes or 1.8-m Auxiliary telescopes), adaptive optics correction (tip-tilt, 64 actuators), atmospheric conditions (averaged 0.7 arcsecond seeing and excellent 0.5 arcsecond seeing), wavelengths (from the J-band to the K-band), fringe tracking accuracy (from no to perfect fringe tracking), elementary exposure times, spectral resolution (35, 1000 and 10000), off-axis/on-axis operation.

Paper Details

Date Published: 5 July 2000
PDF: 10 pages
Proc. SPIE 4006, Interferometry in Optical Astronomy, (5 July 2000); doi: 10.1117/12.390213
Show Author Affiliations
Fabien Malbet, Observatoire de Grenoble (France)
Alain Chelli, Observatoire de Grenoble (France)
Romain Gueorguiev Petrov, Univ. de Nice Sophia-Antipolis (France)


Published in SPIE Proceedings Vol. 4006:
Interferometry in Optical Astronomy
Pierre J. Lena; Andreas Quirrenbach, Editor(s)

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