The ALMA Reginal Centre (ARC) provides user support for all levels of ALMA users. It also serves as a basis for public outreach and a training site that offers specialized courses, schools, and workshops to advance the knowledge of radio-interferometric techniques and science.

In addition to the general tasks of an ARC node, the German ARC node focusses on several specific areas of expertise including:

  • The development of advanced data analysis tools
  • Maintainance and upgrade of the Cologne Database for Molecular Spectroscopy (CDMS)
  • Polarization calibration and observation optimization
  • mm-VLBI with ALMA
For more background on the node, please go to 'About the German ARC node'.

Contact the German ARC node

German ARC node newsletter

If you wish to stay informed about the latest ALMA developments, calls for proposals, data releases, conferences/workshops and other information relevant to the German ALMA community, please join the mailing list or visit the mailing list archive. More information on the mailing list such as a short description and an alternative way of subscribing to it can be found here.

Recent News:

ALMA Lunch Meeting - AG Tagung 2015

There will be an ALMA Lunch Meeting at this year's AG Tagung in Kiel. For further information, please see

Call for Proposals for Cycle 3

The ALMA Cycle 3 call for proposals is out. For further information, please see

Long Baseline Campaign Science Verification Data released

Long baseline science verification datasets are now available. For further information, please see http://\sciann15011.html.

First announcement: German ALMA Community Days & Proposal Workshop 2015

With construction and basic commissioning of the Atacama Large Millimeter/submillimeter Array (ALMA) drawing to a close, the Joint ALMA Observatory (JAO) will issue a Call for Proposals for Cycle 3 on 24 March 2015. The deadline is expected to be on 23 April 2015, with observations starting in October 2015. To prepare the local astronomical community for Cycle 3, the German ARC node organizes the German ALMA Community Days & Proposal Workshop 2015 at the Argelander-Institut für Astronomie in Bonn on 25-27 March 2015. The first day will feature a brief introduction to the basic radio astromonical concepts and terminology for non-radio astronomers. On the second day, several talks will highlight recent scientific results obtained with ALMA, before ALMA's capabilities in Cycle 3, ALMA procedures, ALMA tools and the available help will be presented. The third day will be dedicated to hands-on work in workshops for novice users as well as for advanced users. During these workshops, participants can start to prepare their own ALMA proposals with technical support from experts.
More news about ALMA and the German ARC node can be found at the bottom of this page and in the menu on the left.


Within the framework of the ASTRONET programme, "Common Tools for Future Large Submillimeter Facilities", we have initiated a project, "Adaptable Radiative Transfer Innovations for Submillimeter Telescopes (ARTIST)", to develop a next generation model suite for comprehensive multi-dimensional radiative transfer calculations of the dust and line emission, as well as their polarization.
More information on the project can be found at the ARTIST homepage.


The CATS program ("Coherent Set if Astrophysical Tools for Spectroscopy") uses a flexible modeling tool (MAGIX) which provides a connection between existing numerical codes and model parameters. Many models, including non-astrophysical ones, can be incorporated to MAGIX so as to explore their parameter space. The CATS program was developed within the framework of ASTRONET at the University of Cologne.


The Cologne Database for Molecular Spectroscopy (CDMS) provides a molecular line catalogue in the millimeter and sub-millimeter frequency range, making a large database available to all users. It is part of the European project VAMDC (Virtual Atomic and Molecular Data Centre) and is maintained by the University of Cologne.