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Proceedings Paper

A Fabry-Perot calibrator of the HARPS radial velocity spectrograph: performance report
Author(s): François Wildi; Francesco Pepe; Bruno Chazelas; Gaspare Lo Curto; Ch. Lovis
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Paper Abstract

The radial velocity (RV) technique has pushed the planet detection limits down to super-earths. To reach the precision required to detect earth-like planets it is necessary to reach a precision around 1cm.s-1. Part of the error budget is due to noise in the wavelength calibration of the spectrograph. The Observatory of Geneva has designed, built and tested in collaboration with ESO a calibrator system based on a Fabry-Perot interferometer to explore its potential to improve the wavelength calibration of RV spectrographs. We have obtained exciting results with the calibrator system demonstrated 10 cm s-1 stability over one night. By further improving the injection system we are aiming at a 1 m s-1 repeatability over the long term.

Paper Details

Date Published: 20 July 2010
PDF: 11 pages
Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77354X (20 July 2010); doi: 10.1117/12.857951
Show Author Affiliations
François Wildi, Observatoire de Genève (Switzerland)
Francesco Pepe, Observatoire de Genève (Switzerland)
Bruno Chazelas, Observatoire de Genève (Switzerland)
Gaspare Lo Curto, European Southern Observatory (Germany)
Ch. Lovis, Observatoire de Genève (Switzerland)

Published in SPIE Proceedings Vol. 7735:
Ground-based and Airborne Instrumentation for Astronomy III
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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