The commissioning runs of ESPRESSO started on 27 November 2017 with the ESPRESSO first light, and ended on 26 July 2019, after three major technical missions, when discontinuities in radial velocities might be expected.
This page provides a link to scientifically useful data obtained during those runs.
Commissioning data can be used as a reference for planning future observations and also possibly for scientific work. However, it needs to be noted that the data were obtained when the instrument setup and software were tested and may therefore have some limitations. The observing times may not be optimal, the file headers may be incomplete and not homogenous, etc.
Commissioning runs and technical interventions
2017-11-27 - 2017-12-07: First light on UT1
2018-01-26 - 2018-02-07: 4 UTs first light
2018-02-25 - 2018-03-07: 1 UT & 4 UTs
2018-03-07 - 2018-03-21: Technical mission (possible RV discontinuity)
2018-04-27 - 2018-05-05: Re-commissioning after technical mission
2018-07-03 - 2018-07-09: 1 UT & 4 UTs
2018-20-09 - 2018-10-18: Technical mission (possible RV discontinuity)
2018-10-20 - 2018-20-22: Re-commissioning after technical mission
2018-11-30 - 2018-12-01: 4 UT commissioning
2018-06-03 - 2018-06-25: Technical mission, installation of the new fibre link (possible RV discontinuity)
2019-06-27 - 2019-06-28: Re-commissioning after technical mission (part 1)
2019-07-03 - 2019-07-08: Re-commissioning after technical mission (part 2)
2019-07-25 - 2019-07-26: 4 UT re-commissioning
Milky Way stars
- α Cen A
- α Cen B
- ES Cet
- ε Ori
- τ Sco
- ζ Tuc
Cluster star (Galactic)
- NGC2243 AAT2619
Solar system objects
- Laser Guide Star beam
Links are provided to download the data both as a whole package or file-by-file. In the second case the users can pre-select individual files before downloading.
If any of these data are used for publication, please acknowledge that the results are based on public data released from the ESPRESSO commissioning observations under Programme ID 60.A-9128.