| Guifré | Molera Calvés | Joint Institute for VLBI in Europe, JIVE, the Netherlands, Aalto University Metsähovi radio observatory, Finland | 2012-10-02 | 2012-10-02 |
| Bin | Wang | Shanghai Jiao-Tong University | 2012-09-26 | 2012-09-26 |
| Zita | Martins | Department of Earth Science and Engineering, Imperial College London | 2012-09-19 | 2012-09-19 |
| Tanya | Lim | (RAL, UK) | 2012-09-12 | 2012-09-14 |
| Maxime | Maurice | Institut Supérieur de l'Aéronautique et l'Espace (Toulouse) | 2012-04-03 | 2012-07-31 |
| Julien | Bel | centre de Physique Theorique, Luminy, Marseille | 2012-05-03 | 2012-07-31 |
| Olena | Romanets | KVI (University of Groningen | 2012-07-01 | 2012-07-31 |
| Raoul | Canameras | Université Paris Sud | 2012-04-16 | 2012-07-30 |
| Giacomo | Terreran | Universita di Padova | 2012-02-06 | 2012-07-30 |
| Jordi | Cortes | UAB-Conveni de pràctiques | 2012-05-17 | 2012-06-30 |
| Qizhou | Zhang | Harvard-Smithsonian Center for Astrophysics, USA | 2012-06-22 | 2012-06-22 |
| Artem | Yurov | Baltic Federal University (Russia) | 2012-05-23 | 2012-06-06 |
| Alla | Yurova | Baltic Federal University (Russia) | 2012-05-23 | 2012-06-06 |
| Ray | Furuya | national astronomical observatory de japan | 2012-05-04 | 2012-05-18 |
| Hiroko | Shinnaga | Caltech submillimeter Observatory | 2012-05-04 | 2012-05-18 |
| Matthias | Müller | Leibniz Institute For Astrophysics Potsdam | 2012-05-07 | 2012-05-11 |
| A | Astashenok | Baltic Federal University | 2012-03-31 | 2012-04-14 |
| Alkistis | Zoi Bonanou | National Observatory of Athens | 2012-03-27 | 2012-04-02 |
| A | Makarenko | Tomsk Pedagogical University | 2012-03-14 | 2012-03-29 |
| Luisa M. Lara | Lara | IAA | 2012-03-27 | 2012-03-28 |
