20 July 2010 A Fabry-Perot calibrator of the HARPS radial velocity spectrograph: performance report
Author Affiliations +
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.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
François Wildi, François Wildi, Francesco Pepe, Francesco Pepe, Bruno Chazelas, Bruno Chazelas, Gaspare Lo Curto, Gaspare Lo Curto, Ch. Lovis, Ch. Lovis, } "A Fabry-Perot calibrator of the HARPS radial velocity spectrograph: performance report", Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77354X (20 July 2010); doi: 10.1117/12.857951; https://doi.org/10.1117/12.857951
PROCEEDINGS
11 PAGES


SHARE
Back to Top