The shareholders and associate members of the CTAO gGmbH

The CTA Observatory gGmbH (CTAO gGmbH) is the legal entity for CTA in the preparation of the implementation of the CTA Observatory. The CTAO gGmbH works in close cooperation with the CTA Consortium, which is responsible for directing the science goals of the Observatory and is involved in the array design and supplying components (as in-kind contributions). The CTAO is governed by the CTA Council, composed of shareholders from nine countries and associate members from two countries:

Shareholder Country Shareholder Delegates Entrance Year
Austria Leopold Franzens Universität Olaf Reimer 2016
Czech Republic Institute of Physics of the Academy of Science of the Czech Republic Petr Travnick, Jan Burianek 2015
France Centre national de la recherche scientifique (CNRS) Berrie Giebels 2016
France Commissariat à l’énergie atomique et aux énergies alternatives (CEA) Pascal Debu 2016
Germany Deutsches Elektronen-Synchrotron (DESY) Christian Stegmann 2014
Germany Max-Planck-Gesellschaft (MPG) Markus Schleier 2016
Italy Istituto Nazionale di Astrofisica (INAF) Patrizia Caraveo 2014
Italy Istituto Nazionale di Fisica Nucleare (INFN) To be determined 2017*
Japan University of Tokyo Masahiro Teshima 2015
Spain Instituto de Astrofísica de Canarias (IAC) Inma Figueroa, Rafael Rebolo 2015
Switzerland Universität Zürich Florencia Canelli 2014
United Kingdom The Science and Technology Facilities Council Antony Medland 2015

*Pending final signatures.

Associate Member Country Associate Member Delegates Entrance Year
Netherlands Netherlands Organisation for Scientific Research (NWO) David Berge, Nico Kos  2015
South Africa National Research Foundation Markus Böttcher  2015

The statutes of the CTAO gGmbH: Articles of Association 


Chair, CTA Council: Giampaolo Vettolani

Vice-Chair, CTA Council: Beatrix Vierkorn-Rudolph

Managing Director, CTAO gGmbH: Ulrich Straumann

Administrative and Finance Committee (AFC)
Purpose: To advise the Council on matters of administrative and legal issues of financial management.
Chair: James Botha


In-Kind Review Committee (IKRC)
Purpose: To assess the process of calls for in-kind contributions to the CTA Observatory, evaluate proposals received, provide recommendations on the selection of the proposals to the council and to advise on the contracting and reviewing process of in-kind contributions.

Scientific and Technical Advisory Committee (STAC)

Purpose: To monitor and evaluate the scientific goals and overall layout of CTA, including its technical design. To assess the costs of construction and operation of the facility.
Chair: Roger Blandford

CTA Council Meetings


The CTA Council meets on a regular basis but at least once per year. The meetings are not open to the public and are attended by shareholder delegates and their experts, associate member delegates, CTA spokesperson(s), the chair of the Consortium Board and the Managing Director assisted by the Technical Director/Project Manager, the Scientific Director/Project Scientist and additional members of the company at the Chair’s discretion. Other persons whose presence may be required (e.g. external auditors) may be invited by the Chair with the Council’s approval.


Next Meeting

9th Council Meeting

8-9 March 2017

Munich, Germany


Go to the CTA members site (log-in required).

14-15 November 2016

26 September 2016

13-14 June 2016

6-7 March 2016

13 November 2015

15-16 July 2015

25-26 March 2015

22 October 2014

5 September 2014