| Caso, Juan Pablo | Estudio de enanas ultra-compactas y cumulos globulares en el cumulo de Antlia | 2015 | Universidad Nacional de La Plata (UNLP) | GMOS-S | Argentina |
| Calderon, Juan Pablo | Estudio de propiedades fotometricas de galaxias en el cumulo de Antlia | 2015 | Universidad Nacional de La Plata (UNLP) | GMOS-S | Argentina |
| Camperi, Javier | Estudio espectrofotométrico de la galaxia NGC 253 | 2018 | Universidad Nacional de Córdoba | TRECS/FLAMINGOS-2 | Argentina |
| Vazzano, María Mercedes | Estudio multiespectral de regiones de formación estelar | 2018 | Universidad Nacional de La Plata | FLAMINGOS-2 | Argentina |
| Ferrero, Leticia | Estudio multifrecuencia de jets estelares | 2020 | Universidad Nacional de Córdoba | GSAOI+GeMS/NIRI | Argentina |
| Schonell, Astor J. | Estudo da alimentação e Retro-alimentação de núcleos ativos de galáxias a partir de observações no infravermelho próximo | 2017 | Universidade Federal de Santa Maria (UFSM) | NIFS+ALTAIR | Brazil |
| Jasmim, Flávia Luzia | Estudo da composição superficial de diversas classes de pequenos corpos | 2013 | Observatorio Nacional | TRECS | Brazil |
| Diniz, Marlon Rodrigo | Estudo de populações estelares em galáxias ativas a partir de cubos de dados no infravermelho próximo | 2017 | Universidade Federal de Santa Maria (UFSM) | NIFS+ALTAIR | Brazil |
| Gusmão, Danilo Maciel Lopes | Estudo multi técnicas das regiões HII ultracompactas por espectroscopia de alta resolução espacial | 2015 | Universidade do Vale do Paraiba | | Brazil |
| Jiang, Linhua | Evolution of the quasar population at high redshift | 2008 | The University of Arizona | GNIRS/NIRI | USA |
| Gerard, Benjamin Lionel | Exoplanet imaging speckle subtraction: current limitations and a path forward | 2020 | University of Victoria | GPI | Canada |
| Rajan, Abhijith | Exoplanet Meteorology: Characterizing The Atmospheres Of Directly Imaged Sub-Stellar Objects | 2017 | Arizona State University | GPI | USA |
| Onoue, Masafusa | Exploration of the cosmic dawn with high-redshift quasars | 2018 | The Graduate University for Advanced Studies, NAOJ | GNIRS | Other |
| Mehner, Andrea | Exploring and Modeling High-excitation Emission in the Ejecta and the Wind of Eta Carinae | 2011 | University of Minnesota | GMOS-S | USA |
| Hankins, Matthew | Exploring HII Regions and Massive Dusty Stars in the Galactic Center with SOFIA/FORCAST | 2018 | Cornell University | TRECS | USA |
| Rotermund, Kaja M. | Exploring Infrared-Bright Sources Detected by the South Pole Telescope - Lensing Galaxies and the Most Massive Structures in the Universe | 2020 | Dalhouse University | GMOS-S/FLAMINGOS-2 | Canada |
| Nysewander, Melissa C. | Exploring optically dark and dim gamma-ray bursts: instrumentation, observation and analysis | 2006 | The University of North Carolina at Chapel Hill | GMOS-S | USA |
| Esposito, Thomas Matthew | Exploring planetary system evolution through high-contrast imaging | 2015 | University of California Los Angeles | GPI | USA |
| Mooley, Kunal P. | Exploring the dynamic radio sky: the search for slow transients with the VLA | 2015 | California Institute of Technology | GMOS-N | USA |
| Tang, Sumin | Exploring the Long-Term and Extreme Variability of Stars | 2012 | Harvard University | GMOS-N | USA |
