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ESPRI data-reduction strategy and error budget for PRIMA

Published online by Cambridge University Press:  01 October 2007

R. Tubbs ,
N. M. Elias II ,
R. Launhardt ,
S. Reffert ,
F. Delplancke ,
A. Quirrenbach ,
T. Henning  and
D. Queloz
R. Tubbs
Affiliation:
Max Planck Institute for Astronomy (MPIA), Königstuhl 17, D-69117 Heidelberg, Germany email: tubbs@mpia.de
N. M. Elias II
Affiliation:
Max Planck Institute for Astronomy (MPIA), Königstuhl 17, D-69117 Heidelberg, Germany email: tubbs@mpia.de Landessternwarte (LSW), Heidelberg University Centre for Astronomy (ZAH), Königstuhl 12, D-69117 Heidelberg, Germany
R. Launhardt
Affiliation:
Max Planck Institute for Astronomy (MPIA), Königstuhl 17, D-69117 Heidelberg, Germany email: tubbs@mpia.de
S. Reffert
Affiliation:
Landessternwarte (LSW), Heidelberg University Centre for Astronomy (ZAH), Königstuhl 12, D-69117 Heidelberg, Germany
F. Delplancke
Affiliation:
European Southern Observatory (ESO), Karl-Schwarzschild-Straße 2, D-85748 Garching bei München, Germany
A. Quirrenbach
Affiliation:
Landessternwarte (LSW), Heidelberg University Centre for Astronomy (ZAH), Königstuhl 12, D-69117 Heidelberg, Germany
T. Henning
Affiliation:
Max Planck Institute for Astronomy (MPIA), Königstuhl 17, D-69117 Heidelberg, Germany email: tubbs@mpia.de
D. Queloz
Affiliation:
Observatoire Astronomique de l'Université de Genève1290 Sauverny, Switzerland
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Abstract

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The Exoplanet Search with PRIma (ESPRI) will use the PRIMA dual-feed astrometric capability on the Very Large Telescope Interferometer (VLTI) to perform astrometric detections of extra-solar planets. We present an overview of our data-reduction strategy for achieving 10-μarcsecond accuracy narrow-angle astrometry using the PRIMA instrument. We discuss the error budget for astrometric measurements, and those aspects of our strategy which are designed to minimise the astrometric measurement errors.

Keywords

astrometryplanetary systemsinstrumentation: interferometerstechniques: interferometricmethods: data analysistechniques: high angular resolutioninfrared: stars

References

Elias, N. M. II, Tubbs, R., Köhler, R., Reffert, S., Stilz, I., Launhardt, R., de Jong, J., Quirrenbach, A., Delplancke, F., Henning, T., Queloz, D. & ESPRI Consortium 2008. Astrometric Data Reduction Software and error budget for PRIMA. In: Proc. IAUS 249 (in press).CrossRefGoogle Scholar
Launhardt, R., Henning, Th., Queloz, D. et al. , 2008, this volume p. 417.CrossRefGoogle Scholar