Analysis of information sources in references of the Wikipedia article "ESPRESSO" in English language version.
A Laser Frequency Comb (LFC) is also available and should have replaced both the ThAr lamp and the Fabry-Pérot (Pasquini& Hubin 2018; Frank et al. 2018; Huke et al. 2018), but, due to lack of reliability and limited spectral coverage, it is currently not integrated in the operational scheme ... This situation might compromize the ability of ESPRESSO of guaranteeing RV repeatability at the 10 cm s−1 level over years.
A Laser Frequency Comb (LFC) is also available and should have replaced both the ThAr lamp and the Fabry-Pérot (Pasquini& Hubin 2018; Frank et al. 2018; Huke et al. 2018), but, due to lack of reliability and limited spectral coverage, it is currently not integrated in the operational scheme ... This situation might compromize the ability of ESPRESSO of guaranteeing RV repeatability at the 10 cm s−1 level over years.
An issue with the ESPRESSO CCD controllers has recently been identified.
The first observation was for the star Tau Ceti. It was done using the UT1 of the VLT, the observations made on the four united telescopes will be done later.
... first light of ESPRESSO with the four VLT 8.2-meter Unit Telescopes (4UT mode) took place on Saturday February 3rd, 2018... star observed by ESPRESSO with the 4UT mode was the so-called Pepe star
ESPRESSO has been opened to the astronomical community and finally started operations on the 24th of October 2018.
A Laser Frequency Comb (LFC) is also available and should have replaced both the ThAr lamp and the Fabry-Pérot (Pasquini& Hubin 2018; Frank et al. 2018; Huke et al. 2018), but, due to lack of reliability and limited spectral coverage, it is currently not integrated in the operational scheme ... This situation might compromize the ability of ESPRESSO of guaranteeing RV repeatability at the 10 cm s−1 level over years.