Bibcode
Probst, R. A.; Lo Curto, Gaspare; Ávila, Gerardo; Brucalassi, Anna; Canto Martins, Bruno L.; de Castro Leão, Izan; Esposito, M.; González Hernández, J. I.; Grupp, Frank; Hänsch, Theodor W.; Holzwarth, Ronald; Kellermann, Hanna; Kerber, Florian; Mandel, Olaf; Manescau, Antonio; Pasquini, Luca; Pozna, Eszter; Rebolo, R.; Renan de Medeiros, José; Stark, Sebastian P.; Steinmetz, Tilo; Suárez Mascareño, A.; Udem, Thomas; Urrutia, Josefina; Wu, Yuanjie
Referencia bibliográfica
Proceedings of the SPIE, Volume 9908, id. 990864 16 pp. (2016).
Fecha de publicación:
8
2016
Número de citas
17
Número de citas referidas
16
Descripción
We report on the installation of a laser frequency comb (LFC) at the
HARPS spectrograph, which we characterize relative to a second LFC that
we had brought to HARPS for testing. This allowed us for the first time
to probe the relative stability of two independent astronomical LFCs
over an extended wavelength range. Both LFCs covered the spectral range
of HARPS at least from 460 to 690 nm. After optimization of the fiber
coupling to HARPS to suppress modal noise, a relative stability of the
two LFCs in the low cm/s range was obtained. In combination with the
results of our four earlier LFC test campaigns on HARPS, the available
data now cover a time span of more than six years.