A release of the ESPRESSO-DAS pipeline recipes is now available !

A release of the ESPRESSO-DAS pipeline recipes is now available.

Together with the data processing modules, we also provide standalone applications for running them:

  • EsoReflex, a GUI which provides an easy and flexible way of runing pipeline execution workflows.
  • Gasgano, a GUI for data browsing and organisation, providing an intuitive and comprehensive interface to pipeline recipes that are based on the ESO Common Pipeline Library (CPL).
  • EsoRex, a command-line driven utility to launch pipeline recipes, which can be used either as an interactive tool, or can be embedded into scripts for automating some of the data reduction tasks.


Version 1.2.0- Public Release (3 June 2020)

  • The QSO workflow has been split in two. The QSO I workflow carries out the coaddition of the spectra, the line detection, the continuum fitting. The identification of the lines and the creation of the absorption systems. The QSO II workflow starts from the identified absorption systems and gives the possibility to choose which ones to fit with Voigt profiles. In a future release, it will be possible also to repeat the fit of the continuum using the improved fit of the lines.
  • In the interactive windows of the QSO I workflow steps: Coadd spectrum, Detect lines and fit continuum, sliding cursors have been added to simplify the inspection of the spectra.
  • In the interactive window of the QSO I workflow: Mask spectrum it is now possible to apply different masks to different input frames.
  • The names and definitions of the parameters of the recipe espda_iden_syst have been modified to clarify their use.
  • It is now possible for the user to add interactively new knots to improve the spline fitting of the continuum in the QSO I workflow. This new feature allows to obtain very good results also in those regions that in general were not well fitted by the automatic algorithm (e.g. the region severely affected by telluric absorptions or in general by strong absorption lines).
  • The STAR III workflow is now operative. It computes the radial velocity in stellar spectra with the same algorithm adopted by the science recipe at the end of the data reduction cascade. Then it computes also the stellar indexes based on the Ca II lines: R'HK and S.
  • Updated library dependency to CPL-7.1.3
  • Updated Reflex tutorial and pipeline user manual.
  • Added support for python 3.

Known Issues

  • The demo data include examples to run star branch and QSO workflows. These are contained in corresponding 'star' and 'qso' sub-directories. Due to a RPM/MacPorts package creation feature the Reflex RAW_DATA_DIR default installation value is set to a directory that contains both data sets. We recommend the user to run star branch workflows on star (for the demo, Tau Ceti) data and the QSO workflow on QSO (for the demo HE0515-4414) data.
  • For additional known issues please refer to Section 8 of the reflex tutorial and Section 6 of the pipeline user manual.

ESPRESSO-DAS pipeline recipes public version:

The public version of the ESPRESSO-DAS pipeline recipes is 1.2.0, and it is included in the pipeline distribution kit espda-kit-1.2.0.tar.gz together with the following packages:

ESPRESSO-DAS pipeline documentation

User Manual: 1.2.0
EsoReflex Tutorial: 1.2.0

ESPRESSO-DAS pipeline recipes System Requirements

The ESPRESSO-DAS pipeline kit version 1.2.0 is verified and supported on the VLT target platform:
  • CentOS 7 (x86_64), using gcc v4.8.5.
It is also verified that the pipeline kit can be built on the following platforms (x86_64):
  • Scientific Linux 7
  • Fedora 28
  • Fedora 29
  • Fedora 30
  • Fedora 31
  • Ubuntu 16.04
  • Ubuntu 18.04
  • Ubuntu 18.10
  • Ubuntu 19.04
  • Ubuntu 20.04
  • Debian 9
  • MacOS 10.11
  • MacOS 10.12
  • MacOS 10.13
  • MacOS 10.14

Installing and running the ESPRESSO-DAS pipeline recipes 1.2.0

There are several ways to install the pipeline on your machine. The recommended installation procedure depends on whether you are working on a Mac OSX or on Linux.

Installation using RPM repositories

For Fedora 28/29/30/31, CentOS 7 and Scientific Linux 7, it is recommended to install the pipeline from our RPM repository. The RPM repositories include not only the pipeline recipes but also the library dependencies (CPL, etc..), the EsoReflex workflow, demo data and the EsoReflex tool itself.

Please refer to the instructions provided here.

Installation using MacPorts repositories

For Apple macOS 10.11/10.12/10.13/10.14, it is recommended to install the pipeline with MacPorts. The MacPorts repositories include not only the pipeline recipes but also the library dependencies (CPL, etc..), the EsoReflex workflow, demo data and the EsoReflex tool itself.

Please refer to the instructions provided here.

Installation using the EsoReflex installation procedure

Please refer to EsoReflex Software Prerequisites and Installation Instructions for detailed instructions

Installation using the public pipeline kit

To install the ESPRESSO-DAS pipeline recipes 1.2.0 you will need to retrieve the pipeline distribution kit, unpack and install it.

  • Please check the software prerequisites here.

Installation procedure:

  1. Change directory to where you want to retrieve the ESPRESSO-DAS pipeline recipes 1.2.0 package. It can be any directory of your choice but not:
    • $HOME/gasgano
    • $HOME/.esorex
  2. Download the software and the static calibration data (line catalogs etc.) necessary for running the pipeline recipes:
  3. Unpack using for example the following command:     tar xzf espda-kit-1.2.0.tar.gz
  4. Install: after moving into the installation directory,     cd espda-kit-1.2.0 it is recommended to perform the installation using the supplied installer script:     ./install_pipeline (BEWARE: The installation may take several minutes). By default the script will install the ESPRESSO-DAS recipes, Gasgano, EsoRex, all the necessary libraries, and the static calibration tables, into a directory tree rooted at $HOME. A different path may be specified as soon as the script is run. For instance (user input is boldfaced):
    $ ./install_pipeline
    I am about to install the following software packages:
    • cfitsio3.47.tar.gz
    • cpl-7.1.3.tar.gz
    • esorex-3.13.3.tar.gz
    • gasgano-2.4.8.tar.gz
    • espda-kit-1.2.0.tar.gz
    with the following pipeline calibration file(s):
    • espda-calib-1.2.0.tar.gz
    The software installation will be organised in bin/, lib/ and include/ directories, while the calibration files will be installed in a calib/ directory. Where should I install the software packages ? [/home/userid] /home/dummy/pipelines
    Where should I install the pipeline calibration files ? [/home/dummy/pipelines] /home/dummy/calibrations
    In this case the software is installed under the directory /home/dummy/pipelines and the static calibration tables under /home/dummy/calibrations/espda The only exception to all this is the Gasgano tool, that will always be installed under the directory $HOME/gasgano Note that the installer will move an existing $HOME/gasgano directory to $HOME/gasgano.old before the new Gasgano version is installed.
    Important: the installation script would ensure that any existing Gasgano and EsoRex setup would be inherited into the newly installed configuration files (avoiding in this way any conflict with other installed instrument pipelines).
    Please follow the instructions shown at the end of a successful installation script: they will indicate how to set your PATH and CPLDIR variables in your machine in order to run the pipeline.
    Alternatively, it is possible to perform a manual installation (experienced users only): the README file located in the top installation directory contains more detailed information about a step-by-step installation.

Executing the pipeline 1.2.0

Using EsoReflex

  • To run the EsoReflex workflow, please refer to the ESPRESSO-DAS workflow tutorial available in this table under column Documentation.

Using Gasgano

  1. To run the Gasgano GUI, just add $HOME/gasgano/bin to your PATH environment variable:     export PATH="$HOME/gasgano/bin:"$PATH You should also define an environment variable CPLDIR to point to the same path specified for the installation. Possible files to update are:     $HOME/.bashrc     $HOME/.profile Finally, enter the command     gasgano
  2. If the Gasgano main panel appears, then you have successfully installed Gasgano. Make sure, however, that the expected Gasgano 2.4.8 release is running: the version number is listed at the top of the main Gasgano panel.
  3. Refer to the Gasgano User's Manual to learn how to browse data and run pipeline recipes. Refer to the Pipeline User Manual(s) for detailed information about the recipes usage.

Using EsoRex

  1. The EsoRex executable should be available in the bin directory under your installation path (see above). The PATH environment variable should be upgraded accordingly (similarly as done for Gasgano).
  2. Refer to the EsoRex web page for details about the related features and options.


The EsoReflex Users' Manual is availale for download

The GASGANO Users' Manual (~1.2 Mb, 66 pages) is available for download in the Gasgano web page.

On the EsoRex web page some online documentation about EsoRex can be found.

The CPL manuals are available on the CPL web pages.

In case of problems when opening the documents directly from your web browser, the files may be first saved on disk, and then opened with Acrobat Reader.

Bug Reports

If you experience an unexpected behavior of any component of the ESPRESSO-DAS pipeline recipes package, please, first verify that you are using one of the above mentioned supported platforms and refer to the list of known problems and limitations in the pipeline manual of the current ESPRESSO-DAS pipeline release.

For any other issues or requests, please, send a report to the ESO User Support Department, describing:        

  • the ESPRESSO-DAS pipeline version (currently 1.2.0), and the version of other components (e.g., Gasgano, EsoRex, ...) you are using
  • the version of your OS and C compiler.
  • the exact sequence of actions that were performed before the problem occurred
  • what were precisely the symptoms and the possible error message(s)
  • whether the problem is repeatable