ESPRESSO News and Press Releases

In this page, we list the main changes affecting the instrument and this website as well as ESO press releases.

Instrument News

  • 2020 May 18: Two cases of polution of ESPRESSO spectra by the LGSF were detected recently. The LGSF team is working on the improvement of the laser collision detection tool. In the meanwhile, any user with Sodium contamination that can be attricuted to the laser should contact USD.
  • 2020 Apr 6: For a very short timescale of minutes, while the red detector RV precision is of ~10 cm/s, the blue detector RV precision is of ~60 cm/s. The ESPRESSO IOT and the detector team are working to characterize and correct this problem, and a dedicated mission is expected to take place during 2020.
  • 2020 Mar 11: First ESPRESSO science press release, entitled ESO Telescope Observes Exoplanet Where It Rains Iron.
  • 2019 Oct 1: In P104 the calibration programme ESPRESSO observations of the 4LGSF laser beams: characterization of the Raman spectrum will be executed on ESPRESSO. All data from calibration programmes becomes immediately public and can be retrieved via the ESO archive. All calibration programmes since P100 are listed here.
  • 2019 Aug 29: The ESPRESSO ETC was updated to reflect the gain in transmission after the technical mission of July. This gain in flux was of, in average,~50% in flux in the UHR and HR modes and of ~40% in the MR. For precise and updated information, please refer to the ETC.
  • 2019 Jul 15: LFC calibrations are taken daily to evaluate the reliability of the facility over a timescale of months. The calibration frames are available for the interested user via the ESO archive. However, the LFC is not yet formally offered to the community and these data should be considered as test data.
  • 2019 Jun 05: An issue with the ESPRESSO CCD controllers has recently been identified: the video and digitization circuitry shows a much worse Differential Non Linearity than expected. As a consequence, pixel values have a bias to particular low order bits, so that some values for the pixel intensity are underrepresented. This issue affects all read modes and may be worse for higher read speeds. The exact impact on the science has yet to be determined. The ESO detector team determined the source of the problem and is now working on a new version of the associated hardware. Detailed information will be posted on these web pages when available.
  • 2018 Nov 22: the LFC is currently not available due to reliability problems of one of its sub-systems. As a consequence, no LFC frame is available for observations carried out since Nov. 19. SM users will be informed as soon as the problem is resolved. Follow-up information will be posted on this page.
  • 2018 Sep 01: the ESO Call for Proposals for Period 103 offers the possibility to use ESPRESSO in 4-UT mode to target faint sources at a resolving power of 70'000 (Medium Resolution) with two binning options (MR42 and MR84). This mode is offered in groups of consecutive nights in visitor mode only. As during Period 102, the instrument configurations (HR11, HR21 and UHR11) of the ESPRESSO 1-UT mode are offered in both service and visitor modes.
  • 2018 Mar 01: the instrument is offered to the community for the first time through ESO Call for Proposals for Period 102. In Period 102, ESPRESSO is offered for regular operations in 1-UT mode only, in both of its two High-Resolution (HR) modes and in Ultra-High Resolution (UHR) mode. The ESPRESSO 4-UT mode may be offered in Period 103, depending on successful commissioning during Period 101. The Laser Frequency Comb (LFC) is operational at this time but not yet fully tested. LFC frames will anyway be taken by the Observatory as additional calibrations to benefit from the full precision of ESPRESSO once pipeline recipes are optimized.
  • 2018 Feb 03First Light in 4-UT mode (see press release)
  • 2017 Nov 27: First Light in 1-UT mode (see press release)
  • 2017 Nov 22: Commissioning of the Coudé Train of UT3
  • 2017 Aug 22: Preliminary Acceptance Europe
  • 2017 Jun 09: Commissioning of the Coudé Train of UT4
  • 2017 Feb 15: Commissioning of the Coudé Train of UT2
  • 2017 Feb 11: Commissioning of the Coudé Train of UT1
  • 2015 Feb 05: delta FDR
  • 2013 May 14: Final Design Review (FDR)
  • 2011 Nov 29: Preliminary Design Review
  • 2011 Jan 17: Technical Kick-Off meeting
  • 2010 Apr 13: Phase-A Study Review meeting

Press Releases