A laser frequency comb featuring sub-cm/s precision for routine operation on HARPS
2014
We present a re-engineered version of the laser frequency comb that has proven a few-cm/s calibration repeatability
on the HARPS spectrograph during past campaigns. The new design features even better performance
characteristics. The newly arranged oscillator, filter cavities and fiber injection for spectral broadening allow
robust long term operation, controlled from a remote site. Its automation features enable easy operation for
non-experts. The system is being prepared for installation on the HARPS spectrograph in fall of 2014, and will
subsequently become available to the astronomical community.
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