Achieving a few cm/sec calibration repeatability for high resolution spectrographs: the laser frequency comb on HARPS

Bibcode
2012SPIE.8446E..1WL
DOI
10.1117/12.925964
Lo Curto, Gaspare; Manescau, Antonio; Avila, Gerardo; Pasquini, Luca; Wilken, Tobias; Steinmetz, Tilo; Holzwarth, Ronald; Probst, Rafael; Udem, Thomas; Hänsch, Theodor W.; González-Hernández, J. I.; Esposito, M.; Rebolo, R.; Canto Martins, Bruno; de Medeiros, Jose Renan
Bibliographical reference

Ground-based and Airborne Instrumentation for Astronomy IV. Proceedings of the SPIE, Volume 8446, id. 84461W-84461W-10 (2012).

Advertised on:
9
2012
Number of authors
15
IAC number of authors
3
Citations
15
Refereed citations
11
Description
The laser frequency comb, with its extreme precision, opens a new window for high precision spectroscopy for current facilities, as well as for the ELT's. We report on the latest performance of the laser frequency comb obtained in combination with the HARPS spectrograph, which allowed calibration with cm/sec repeatability. The laser frequency comb system developed is described. Details of its laboratory set-up, characterization and integration with HARPS are shown. The results of the recent test campaigns are presented, showing excellent performance in terms of repeatability as well as wavelength coverage. Preliminary on sky data and next activities to integrate such a system in HARPS are presented.
Type
Non-refereed

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