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The astrometric data reduction software (ADRS) and error budget for PRIMA

Published online by Cambridge University Press:  01 October 2007

N. M. Elias II ,
R. N. Tubbs ,
R. Köhler ,
S. Reffert ,
I. Stilz ,
R. Launhardt ,
J. de Jong ,
A. Quirrenbach ,
F. Delplancke  and
Th. Henning
...Show all authors
N. M. Elias II
Affiliation:
Zentrum für Astronomie (ZAH) der Universität Heidelberg Landesternwarte (LSW); Köenigstuhl 12; 69117 Heidelberg, Germany email: n.elias@lsw.uni-heidelberg.de Max-Planck-Institut für Astronomie (MPIA)Königstuhl 17; 69117 Heidelberg, Germany
R. N. Tubbs
Affiliation:
Max-Planck-Institut für Astronomie (MPIA)Königstuhl 17; 69117 Heidelberg, Germany
R. Köhler
Affiliation:
Zentrum für Astronomie (ZAH) der Universität Heidelberg Landesternwarte (LSW); Köenigstuhl 12; 69117 Heidelberg, Germany email: n.elias@lsw.uni-heidelberg.de Max-Planck-Institut für Astronomie (MPIA)Königstuhl 17; 69117 Heidelberg, Germany
S. Reffert
Affiliation:
Zentrum für Astronomie (ZAH) der Universität Heidelberg Landesternwarte (LSW); Köenigstuhl 12; 69117 Heidelberg, Germany email: n.elias@lsw.uni-heidelberg.de
I. Stilz
Affiliation:
Zentrum für Astronomie (ZAH) der Universität Heidelberg Landesternwarte (LSW); Köenigstuhl 12; 69117 Heidelberg, Germany email: n.elias@lsw.uni-heidelberg.de Max-Planck-Institut für Astronomie (MPIA)Königstuhl 17; 69117 Heidelberg, Germany
R. Launhardt
Affiliation:
Max-Planck-Institut für Astronomie (MPIA)Königstuhl 17; 69117 Heidelberg, Germany
J. de Jong
Affiliation:
European Southern Observatory (ESO)Karl-Schwarzschild-Strasse 2; 85748 Garching bei München, Germany
A. Quirrenbach
Affiliation:
Zentrum für Astronomie (ZAH) der Universität Heidelberg Landesternwarte (LSW); Köenigstuhl 12; 69117 Heidelberg, Germany email: n.elias@lsw.uni-heidelberg.de
F. Delplancke
Affiliation:
European Southern Observatory (ESO)Karl-Schwarzschild-Strasse 2; 85748 Garching bei München, Germany
Th. Henning
Affiliation:
Max-Planck-Institut für Astronomie (MPIA)Königstuhl 17; 69117 Heidelberg, Germany
D. Queloz
Affiliation:
Observatoire Astronomique de l'Université de Genève1290 Sauverny, Switzerland
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Abstract

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The Astrometric Data-Reduction Software (ADRS) processes fringe, delay, environmental, and calibration data for PRIMA narrow-angle astrometry. It is automated software designed to provide fully-calibrated differential delays and separation angles. The ADRS is divided into on-line and off-line processing. The former deals with calibration and data compression, while the latter applies corrections and calculates science quantities. PRIMA is the first VLTI instrument that may require removal of long-term environmental trends. The trend identification and fitting routines are not part of the distributed on-line and off-line processing software. Instead, files containing fit parameters will be updated regularly. Coding is presently underway. The PRIMA error budget summarizes the principal sources of error in PRIMA astrometric observations.

Keywords

astrometrystars: planetary systemsinstrumentation: interferometerstechniques: interferometricmethods: data analysistechniques: high angular resolutioninfrared: stars
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S249: Exoplanets: Detection, Formation and Dynamics , October 2007 , pp. 119 - 122
Copyright
Copyright © International Astronomical Union 2008

References

Launhardt, R., Henning, Th., Queloz, D., Quirrenbach, A., Delplancke, F., Derie, F., Elias, N., Pepe, F., Reffert, S., Segransan, D., Setiawan, J., Tubbs, R., & ESPRI Consortium 2008, The ESPRI project: Narrow-angle astrometry with VLTI-PRIMA (these proceedings).CrossRefGoogle Scholar
Tubbs, R., Elias, N., Launhardt, R., Reffert, S., Delplancke, F., Quirrenbach, A.Henning, Th., Queloz, D., & ESPRI Consortium 2008. ESPRI data-reduction strategy and error budget for PRIMA. In: Proc. IAUS 248 (in press).CrossRefGoogle Scholar