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Proceedings Paper

The performance of the new Fabry-Perot calibration system of the radial velocity spectrograph HARPS
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Paper Abstract

The Observatory of Geneva has designed, built and tested in collaboration with ESO a calibrator system based on a Fabry-Perot (FP) interferometer to explore its potential in the calibration of radial velocity (RV) spectrographs. Today, the RV technique has pushed the planet detection limits down to super-earths but the reach the precision required to detect earth-like planets it is necessary to reach a precision around 1cm s-1. While a significant part of the error budget is the incompressible photon noise, another part is the noise in the wavelength calibration of the spectrograph. It is to address this problem that we have developed this new device. We have obtained exciting results with the calibrator system demonstrated 10 cm s-1 stability over one night and 1 m s-1 over 60 days. By further improving the injection system we are aiming at a 1 m s-1 repeatability over the long term.

Paper Details

Date Published: 15 September 2011
PDF: 9 pages
Proc. SPIE 8151, Techniques and Instrumentation for Detection of Exoplanets V, 81511F (15 September 2011); doi: 10.1117/12.901550
Show Author Affiliations
Francois Wildi, Observatoire de Genève (Switzerland)
Francesco Pepe, Observatoire de Genève (Switzerland)
Bruno Chazelas, Observatoire de Genève (Switzerland)
Gaspare Lo Curto, European Southern Observatory (Germany)
Christophe Lovis, Observatoire de Genève (Switzerland)


Published in SPIE Proceedings Vol. 8151:
Techniques and Instrumentation for Detection of Exoplanets V
Stuart Shaklan, Editor(s)

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