(updated 30 May)
| Name | Organisation | Country |
| Tiziana Abegg | Cherenkov Telescope Array Observatory GmbH | GERMANY |
| L. Angelo Antonelli | INAF & ASDC | ITALY |
| Thomas Armstrong | Durham University | UK |
| Jean Ballet | CEA Saclay | FRANCE |
| Yvonne Becherini | Linnaeus University | SWEDEN |
| Wystan Benbow | Smithsonian Astrophysical Observatory | USA |
| Konrad Bernlöhr | MPI für Kernphysik | GERMANY |
| Marc-André Besel | Cherenkov Telescope Array Observatory GmbH | GERMANY |
| Carmen Blasco | Cherenkov Telescope Array Observatory GmbH | GERMANY |
| Markus Boettcher | North-West University | SOUTH AFRICA |
| Catherine Boisson | LUTH - Observatoire de Paris | FRANCE |
| Johan Bregeon | LUPM - UMR5299 | FRANCE |
| Anthony Brown | Durham University | UK |
| Andrea Bulgarelli | INAF | ITALY |
| Tomasz Bulik | University of Warsaw | POLAND |
| Aleksandr Burtovoi | University of Padova - INAF OAPd | ITALY |
| Patrizia Caraveo | INAF | ITALY |
| John Carr | CPPM | FRANCE |
| Paula Chadwick | Durham University | UK |
| Ryan Chaves | CNRS Montpellier | USA |
| Andrew Chen | University of the Witwatersrand | SOUTH AFRICA |
| Vito Conforti | INAF IASF Bologna | ITALY |
| Juan Cortina | IFAE | SPAIN |
| Garret Cotter | University of Oxford | UK |
| Michael Daniel | University of Liverpool | UK |
| Francesco Dazzi | Max-Planck-Institute for Physics | GERMANY | Alessandro De Angelis | INFN | ITALY |
| Andrea De Franco | University of Oxford | UK |
| Elisabete de Gouveia Dal Pino | IAG - University of Sao Paulo | BRAZIL |
| Raquel de los Reyes | MPIK | GERMANY |
| Fulvio De Persio | INFN | ITALY |
| Vitor de Souza | IFSC-USP | BRAZIL |
| Domenico della Volpe | Universite de Geneve | SWITZERLAND |
| Tristano Di Girolamo | University of Naples "Federico II" | ITALY |
| Federico Di Pierro | INAF OATo | ITALY |
| Claudio Dib | Universidad Tecnica Federico Santa Maria | CHILE |
| Sebastian Diebold | Eberhard Karls University Tübingen | GERMANY |
| Marlene Doert | Ruhr-Universität Bochum | GERMANY |
| Dijana Dominis Prester | University of Rijeka | CROATIA |
| Delphine Dumas | CNRS Observatoire de Paris | FRANCE |
| Felix Eisenkolb | Institute for Astronomy and Astrophysics Tuebingen | GERMANY |
| Vandad Fallah Ramazani | University of Turku | FINLAND |
| Michel Fesquet | CEA | FRANCE |
| Valentina Fioretti | INAF/IASF Bologna | ITALY |
| Andreas Foerster | Max-Planck-Institut fuer Kernphysik | GERMANY |
| Stefan Funk | University Erlangen | GERMANY |
| Arno Gadola | Universität Zürich | SWITZERLAND |
| Ramón J. García López | Instituto de Astrofísica de Canarias | SPAIN |
| Markus Garczarczyk | DESY | GERMANY |
| Carmelo Gargano | IASF Palermo | ITALY |
| Markus Gaug | Universitat Autònoma de Barcelona | SPAIN |
| Francesco Giordano | University and INFN Bari | ITALY |
| Enrico Giro | INAF | ITALY |
| Andrea Giuliani | INAF | ITALY |
| Jean-François Glicenstein | IRFU, CEA-Saclay | FRANCE |
| Tim Greenshaw | University of Liverpool | UK |
| Megan Grunewald | Cherenkov Telescope Array Observatory GmbH | GERMANY |
| Jim Hinton | MPI für Kernphysik, Heidelberg | GERMANY |
| Tajima Hiroyasu | Nagoya University | JAPAN |
| Werner Hofmann | MPI für Kernphysik, Heidelberg | GERMANY |
| Talvikki Hovatta | Aalto University | FINLAND |
| Jörg Hörandel | Radboud University Nijmegen | THE NETHERLANDS |
| Susumu Inoue | ICRR, U. Tokyo/MPI for Physics, Munich | JAPAN/GERMANY | Maurizio Iori | University of Rome Sapienza and INFN | ITALY |
| Ira Jung-Richardt | Erlangen Centre for Astroparticle Physics | GERMANY |
| Peter Karn | University of Wisconsin, Madison | USA |
| Johannes Knapp | DESY | GERMANY |
| Jürgen Knödlseder | IRAP | FRANCE |
| Karl Kosack | CEA Saclay | FRANCE |
| Nicola La Palombara | INAF - Istituto Nazionale di Astrofisica | ITALY |
| Giovanni Lamanna | CNRS LAPP IN2P3 | FRANCE |
| Jon Lapington | University of Leicester | UNITED KINGDOM |
| Elina Lindfors | University of Turku | FINLAND |
| Heike Lorenzen-Schmidt | CTAO gGmbH | GERMANY |
| Pedro Luis Luque-Escamilla | Universidad de Jaen | SPAIN |
| Etienne Lyard | University of Geneva | SWITZERLAND |
| Dusan Mandat | Joint Laboratory of Optics | CZECH REPUBLIC |
| Josep Marti | Universidad de Jaen | SPAIN |
| Manel Martinez | IFAE Barcelona | SPAIN |
| Fuessling Matthias | DESY | GERMANY |
| Daniel Mazin | ICRR, University of Tokyo | JAPAN |
| David Melkumyan | DESY | GERMANY |
| Razmik Mirzoyan | Max-Planck-Institute for Physics | GERMANY |
| Teresa Montaruli | University of Geneva | SWITZERLAND |
| Emmanuel Moulin | CEA Saclay | FRANCE |
| Nadine Neyroud | CNRS LAPP IN2P3 | FRANCE |
| Jacek Niemiec | Institute of Nuclear Physics, Polish Academy of Sciences | POLAND |
| Pasi Nurmi | University of Turku | FINLAND |
| Paul O'Brien | University of Leicester | UK |
| Cesar Ocampo | Cherenkov Telescope Array Observatory GmbH | GERMANY | Stefan Ohm | DESY | GERMANY |
| Akira Okumura | Nagoya University & MPI Kernphysik | JAPAN/GERMANY |
| Rene Ong | UCLA | USA |
| Julian Osborne | University of Leicester | UK |
| Michal Ostrowski | Jagiellonian University | POLAND |
| Igor Oya Vallejo | DESY | GERMANY |
| Miroslav Pech | Joint Laboratory of Optics | CZECH REPUBLIC |
| Pierre-Olivier Petrucci | IPAG | FRANCE |
| Marc Pfeifer | Erlangen Centre for Astroparticle Physics | GERMANY |
| Alessio Porcelli | Université de Genève | SWITZERLAND |
| Juri Poutanen | University of Turku | FINLAND |
| Julie Prast | LAPP-CNRS | FRANCE |
| Gerd Puehlhofer | University of Tuebingen | GERMANY |
| Michael Punch | Linnaeus University & APC/CNRS | SWEDEN/FRANCE |
| Ignasi Reichardt | INFN Padova | ITALY |
| Andreas Reisenegger | Pontificia Universidad Catolica de Chile | CHILE |
| Marc Ribó | Universitat de Barcelona | SPAIN |
| Javier Rico | IFAE | SPAIN |
| Jerome Rodriguez | CEA/Astrophysics division | FRANCE |
| Sybille Rodriguez | MPI for Physics | GERMANY |
| Patrizia Romano | INAF-IASF Palermo | ITALY |
| Gavin Rowell | University of Adelaide | AUSTRALIA |
| Iftach Sadeh | DESY | GERMANY |
| Heidi Sandaker | University of Oslo | NORWAY |
| Enrico Junior Schioppa | University of Geneva | SWITZERLAND |
| Stefan Schlenstedt | DESY | GERMANY |
| Petr Schovánek | Joint Laboratory of Optics | CZECH REPUBLIC |
| Fabian Schussler | CEA-Saclay | FRANCE |
| Ullrich Schwanke | Humboldt University Berlin | GERMANY |
| Alberto Segreto | IASF-INAF Palermo | ITALY |
| Natalia Serre | Landessternwarte Heidelberg | GERMANY |
| Aimo Sillanpää | University of Turku | FINLAND |
| Daniela Simone | INFN Bari | ITALY |
| Stanislav Stefanik | Charles University in Prague | CZECH REPUBLIC |
| Stefan Steiner | Universität Zürich | SWITZERLAND |
| Magdalena Stodulska | Jagiellonian University | POLAND |
| Thierry Stolarczyk | CEA Irfu, SAp | FRANCE |
| Leo Takalo | Tuorla Observatory | FINLAND |
| Fabian Temme | TU Dortmund | GERMANY |
| Masahiro Teshima | Max-Planck-Institute for Physics | GERMANY |
| Gagik Tovmasian | Institute of Astronomy, UNAM | USA |
| Christopher Townsley | Cherenkov Telescope Array Observatory GmbH | GERMANY |
| Petr Travnicek | Institute of Physics ASCR, Prague | CZECH REPUBLIC |
| Vladimir Vassiliev | University of California, Los Angeles | USA |
| Stefano Vercellone | INAF-IASF Palermo | ITALY |
| Robert Wagner | Stockholm University | SWEDEN |
| Stefan Wagner | Landessternwarte Heidelberg | GERMANY |
| John E Ward | IFAE | SPAIN |
| Jason Watson | University of Oxford | UK |
| Peter Wegner | DESY | GERMANY |
| David Williams | University of California, Santa Cruz | USA |
| André Wörnlein | FAU Erlangen | GERMANY |
| Gabrijela Zaharijas | University of Nova Gorica | SLOVENIA |
| Andreas Zech | Observatoire de Paris | FRANCE |
| Krzysztof Zietara | Jagiellonian University | POLAND |
| Janusz Ziolkowski | Copernicus Astronomical Center NIP 525-000-89-56 | POLAND |