| Band | CAT Ref | PI | Awarded nights | Instrument | Program |
|---|
| A | 28-GTC25/19B | Hans J. Deeg | 20. A (0.5 hrs) | Osiris | Being ready when it wakes up: Resolving the mystery of the 'Where's the flux' star |
| A | 84-GTC78/19B | Cesar Esteban Lopez | A (7. hrs) | MEGARA | High temperature arcs in Herbig-Haro objects of the Orion Nebula |
| A | 58-GTC53-A/19B | Alberto Javier Castro Tirado | 10. A (1. hrs) | Osiris | GTC follow-up of gravitational radiation sources in the Multi-messenger Era |
| A | 58-GTC54-B/19B | Alberto Javier Castro Tirado | 20. A (1.2 hrs) | Osiris | GTC follow-up of gravitational radiation sources in the Multi-messenger Era |
| A | 58-GTC55-C/19B | Alberto Javier Castro Tirado | 12. A (1. hrs) | EMIR | GTC follow-up of gravitational radiation sources in the Multi-messenger Era |
| A Visitor | 58-GTC56-D/19B | Alberto Javier Castro Tirado | 10. A (1. hrs) | HIPERCAM | GTC follow-up of gravitational radiation sources in the Multi-messenger Era |
| A Visitor | 114-GTC114/19B | Montserrat Villar Martin | G (12.7 hrs) | Osiris | Galaxy scale radio mode feedback in radio quiet quasars |
| A | 25-GTC21-A/19B | Javier Licandro Goldaracena | 4. A (1. hrs) | Osiris | Characterizing new discovered faint Main Belt Comets |
| A | 25-GTC22-B/19B | Javier Licandro Goldaracena | 2. A (1. hrs) | Osiris | Characterizing new discovered faint Main Belt Comets |
| A Visitor | 7-GTC2/19B | Vikram Dhillon | 2 A (6.5hrs) | HIPERCAM | A search for optical bursts from FRBs with HiPERCAM |
| A | 30-GTC27/19B | Almudena Alonso Herrero | D (8.1 hrs) | MEGARA | Resolving the ionized outflows in local Seyfert galaxies with GTC/MEGARA |
| A Visitor | 113-GTC113/19B | Jackeline Suzett Rechy Garcia | A (2. hrs) | Osiris | First-time Imaging of the First Jet ever Detected in a Planetary Nebula |
| A | 71-GTC65-A/19B | Ismael Pérez Fournon | A (3. hrs) | Osiris | Measuring Time Delays of Strongly Lensed Supernovae for Precision Cosmology |
| A | 71-GTC66-B/19B | Ismael Pérez Fournon | A (3. hrs) | EMIR | Measuring Time Delays of Strongly Lensed Supernovae for Precision Cosmology |
| A | 71-GTC67-C/19B | Ismael Pérez Fournon | A (12. hrs) | EMIR | Measuring Time Delays of Strongly Lensed Supernovae for Precision Cosmology |
| A | 71-GTC68-D/19B | Ismael Pérez Fournon | A (10. hrs) | Osiris | Measuring Time Delays of Strongly Lensed Supernovae for Precision Cosmology |
| A | 49-GTC43/19B | Miriam García García | D (4. hrs) | Osiris | Sextans-A: The winds of trully metal-poor massive stars |
| A | 102-GTC105-A/19B | Felipe Murgas Alcaíno | 3. A (6. hrs) | Osiris | Atmospheric characterization of exoplanets in TESS north hemisphere fields |
| A | 146-GTC143/19B | Ignacio Negueruela Díez | A (7. hrs) | MEGARA | Abundances in High-mass X-ray binaries: probes of the path to gravitational waves |
| A Visitor | 13-GTC9/19B | Vikram Dhillon | D (5.5 hrs) | HIPERCAM | Untangling the web of a black widow millisecond pulsar binary |
| A | 89-GTC83/19B | Cristina Ramos Almeida | A (15. hrs) | CanariCam | ChANGE: a comprehensive view of AGN feedback and its impact on galaxy evolution |
| A Visitor | 73-GTC70/19B | Nuria Huelamo | A (15. hrs) | MEGARA | A search of accreting protoplanets: IFU spectro-astrometry with MEGARA |
| A | 111-GTC111/19B | Agustín Sánchez Lavega | G (9. hrs) | CanariCam | Uranus from Equinox to Mid-Spring: Temperature Structure, Seasonal Changes, and Emerging Rings |
| B | 104-GTC106/19B | Manuel Linares Alegret | A (7.5 hrs) | Osiris | The hunt for the most massive neutron stars: PSR J1048+2339 |
| B | 32-GTC29/19B | Cesar Esteban Lopez | D (15. hrs) | MEGARA | The abundance discrepancy of carbon at low metallicities |
| B | 69-GTC61-A/19B | Josefa Becerra González | 5. A (10. hrs) | Osiris | Characterizing the diversity of neutron star mergers and their kilonovae |
| B | 69-GTC62-B/19B | Josefa Becerra González | 5. A (10. hrs) | EMIR | Characterizing the diversity of neutron star mergers and their kilonovae |
| B Visitor | 69-GTC63-C/19B | Josefa Becerra González | 10. A (5. hrs) | HIPERCAM | Characterizing the diversity of neutron star mergers and their kilonovae |
| B | 18-GTC12/19B | José Miguel Rodríguez Espinosa | G (37.5 hrs) | MEGARA | Unveiling the population of Lyman Continuum Leakers at the epoch of Re-ionisation |
| B | 44-GTC38-A/19B | Tomás Ruiz-Lara | D (7.1 hrs) | Osiris | Resolving stellar populations with OSIRIS: contrasting the star formation histories of NGC147 and Leo I |
| B | 87-GTC81/19B | Laura Sanchez Menguiano | D (6. hrs) | MEGARA | The role of diffuse ionised gas in the inner metallicity drop observed in spiral galaxies |
| B | 54-GTC49/19B | Javier Licandro Goldaracena | A (10. hrs) | CanariCam | Near-Earth object (162082) 1998 HL1: solving the mid-infrared phase curve puzzle |
| B Visitor | 126-GTC122/19B | Hugo Martín Tabernero Guzmán | A (16. hrs) | HORuS | Transit spectroscopy of the highly irradiated planets Kelt-7b and Kelt-9b with HORuS |
| B | 8-GTC3/19B | Teodoro Muñoz Darias | 10. A (1. hrs) | Osiris | X-ray Binary Transients: High excitation emission lines, wind and nebulae. |
| B | 77-GTC74/19B | Ismael García Bernete | A (2.7 hrs) | EMIR | Revealing outflows from a Hot DOG |
| B | 83-GTC77/19B | Helmut Dannerbauer | D (19.2 hrs) | MEGARA | Unveiling the cool gas reservoir around submillimeter galaxies - a pilot study with MEGARA |
| B Visitor | 88-GTC82/19B | Rui Marques Chaves | D (11.25000000hrs) | MEGARA | MEGARA 2D study of a newly discovered Lya+CIV+HeII nebula with extreme emission line ratios |
| B Visitor | 56-GTC51/19B | Ricardo Hueso Alonso | A (6.7 hrs) | HIPERCAM | High-resolution imaging of Uranus and Neptune |
| B Visitor | 57-GTC52/19B | Enric Palle Bago | A (6.5 hrs) | EMIR | Deciphering the C/O ratio and metallicity for the atmosphere of a unique super Neptune |
| B Visitor | 68-GTC60/19B | Tariq Shahbaz | A (3. hrs) | HORuS | Chemical abundance of the secondary stars in millisecond pulsars |
| B Visitor | 98-GTC100/19B | David Jones | G (2. hrs) | HORuS | Revealing the nature of the diamond ring: the orbital period of the Ba star binary in planetary nebula Abell 70 |
| B Visitor | 148-GTC146-A/19B | Christina Thoene | 1. A (7. hrs) | Osiris | Peculiar supernovae with the GTC |
| B Visitor | 148-GTC147-B/19B | Christina Thoene | 1. A (0.25hrs) | HIPERCAM | Peculiar supernovae with the GTC |
| B | 148-GTC148-C/19B | Christina Thoene | 1. A (2. hrs) | MEGARA | Peculiar supernovae with the GTC |
| B | 148-GTC149-D/19B | Christina Thoene | 1. A (4.5 hrs) | EMIR | Peculiar supernovae with the GTC |
| B | 51-GTC46/19B | Josefa Masegosa Gallego | G (30.7 hrs) | CanariCam | Q-band spectra of bright AGNs |
| B | 70-GTC64/19B | Jorge Sanchez Almeida | D (12.5 hrs) | MEGARA | A high spectral resolution map of a z~3 enormous Lyman-alpha nebula: confirming gas infall from the IGM |
| B | 143-GTC140/19B | Helmut Dannerbauer | G (30. hrs) | Osiris | Optical confirmation of the richest overdensity beyond z=5 |
| B Visitor | 133-GTC130/19B | Carlos Allende Prieto | G (15. hrs) | HORuS | Chemical characterisation of the Gaia Sausage and the Sequoia |
| B | 96-GTC99/19B | Ignacio Trujillo Cabrera | G (3. hrs) | MEGARA | A high quality optical spectrum of Galactic cirri to address the dust contamination problem on deep optical imaging |
| B | 120-GTC117/19B | África Castillo Morales | G (11.2 hrs) | MEGARA | Studying Galactic Winds with MEGARA |
| B Visitor | 48-GTC42/19B | Enric Palle Bago | A (7. hrs) | HORuS | CONFIRMING AND MEASURING THE SPIN-ORBIT MISALIGNMENT OF THE LONGEST-PERIOD A STAR HOT JUPITER |
| B Visitor | 112-GTC112/19B | Agustín Sánchez Lavega | G (5.5 hrs) | CanariCam | A Neptunian Summer: Seasonal Change on the Distant Ice Giant |
| B Visitor | 10-GTC6/19B | Tariq Shahbaz | D (8. hrs) | HIPERCAM | The origin of the optical/infrared variability in the planetary mass object SIMP J0136. |
| B | 19-GTC13/19B | Pablo G. Pérez González | A (35. hrs) | EMIR | The first galaxies with GTC |
| B | 92-GTC94/19B | Sara Cazzoli | G (22. hrs) | MEGARA | Outflows and feedback in low-luminosity AGNs |
| B | 95-GTC97-A/19B | David Jones | 6. G (1.8 hrs) | Osiris | Multi-wavelength target of opportunity follow-up of newly-discovered luminous red novae |
| B | 95-GTC98-B/19B | David Jones | 6. A (1. hrs) | EMIR | Multi-wavelength target of opportunity follow-up of newly-discovered luminous red novae |
| C | 81-GTC76/19B | Carina Fian | G (15. hrs) | Osiris | Reverberation mapping of the Fe III [2039-2113] feature in quasars |
| C | 86-GTC80/19B | Jairo Mendez Abreu | G (11.2 hrs) | MEGARA | The kinematic nature of the central structures in disk galaxies |
| C | 74-GTC71/19B | Vikram Dhillon | D (33. hrs) | HIPERCAM | Optical observations of the JWST Transient Deep Field |
| C | 85-GTC79/19B | Jonay I. González Hernández | G (5. hrs) | Osiris | Tracking orbital period decay in the black hole binary XTE 1118+480 |
| C | 53-GTC48/19B | Nicolas Lodieu | G (65.5 hrs) | MEGARA | A 7D view of the nearest open cluster to the Sun, the Hyades |
| C | 109-GTC109/19B | Pablo Rodríguez Gil | G (20. hrs) | Osiris | Gaseous debris discs: The smoking gun for planetesimals in close orbit around white dwarfs |
| C | 55-GTC50/19B | Jose A. Munoz Lozano | D (1. hrs) | Osiris | Measuring the redshift of the lensed source in B0445+123 to determine H0. |
| C | 129-GTC126/19B | Ignacio del Moral Castro | G (24.8 hrs) | MEGARA | Spotting the differences between active and non-active twin galaxies |
| C | 118-GTC116/19B | Martin Guerrero Roncel | G (5.5 hrs) | Osiris | A New Approach for Searching Debris Disks Around White Dwarfs |
| C | 135-GTC132/19B | Raúl de la Fuente Marcos | D (13. hrs) | Osiris | Investigating slow interstellar comet candidates with GTC |
| C | 147-GTC144-A/19B | Ismael Pérez Fournon | D (15. hrs) | HIPERCAM | A deep HiPERCAM and MEGARA study of the environments of quasars with extreme far-infrared luminosities and star formation rates |
| C | 121-GTC118/19B | Lola Balaguer Núñez | A (9. hrs) | MEGARA | Saurer 1, Berkeley 102 and FSR 0937, very distant and little known Open Clusters |
| C | 128-GTC125-B/19B | Jonay I. González Hernández | A (10.3 hrs) | HORuS | Early Steps of the Milky Way: Old Stars as Tracers of the Formation and Evolution of the Galactic Halo. |
| C | 76-GTC73/19B | Nancy Elias Rosa | D (1.5 hrs) | HIPERCAM | Unveiling the nature of interacting supernovae or supernova impostors with HiPERCAM. |
| C | 36-GTC32/19B | Monica Relano Pastor | D (9. hrs) | MEGARA | Searching for Lyman-alpha emission in Damped Lyman-alpha systems |
| C | 153-GTC155-A/19B | Stefan Geier | G (14. hrs) | Osiris | Resolving the quasar selection bias with Gaia |
| C | 23-GTC18-A/19B | David Barrado Navascués | A (11.5 hrs) | MEGARA | CHRONOS: an accurate lithium depletion boundary age for the Beta Pic Moving Group |
| C | 23-GTC19-B/19B | David Barrado Navascués | A (9. hrs) | MEGARA | CHRONOS: an accurate lithium depletion boundary age for the Beta Pic Moving Group |
| C | 43-GTC37/19B | Nuria Huelamo | A (15. hrs) | CanariCam | Looking for proto-brown dwarf binaries in Barnard 213 |
| C | 131-GTC128/19B | Raúl de la Fuente Marcos | D (6. hrs) | Osiris | Visible spectrum of 2018 VG18, the second farthest Solar System body ever observed |
| C | 94-GTC96/19B | Adriana de Lorenzo-Cáceres Rodríguez | G (15. hrs) | MEGARA | THE EVOLUTION OF INNER BARS UNVEILED WITH PEANUTS |
| C | 144-GTC141-A/19B | Santi Roca Fàbrega | G (13. hrs) | MEGARA | The nature of NGC3983 spiral arms and its nascent pseudobulge through MEGARA-GTC observations |
| C | 144-GTC142-B/19B | Santi Roca Fàbrega | D (4.5 hrs) | MEGARA | The nature of NGC3983 spiral arms and its nascent pseudobulge through MEGARA-GTC observations |
| C | 17-GTC11/19B | Alberto Rebassa Mansergas | G (12.4 hrs) | Osiris | Characterizing the population of post-common-envelope double white dwarfs |
| C | 33-GTC30/19B | Anastasio Díaz Sánchez | A (4. hrs) | EMIR | Spectroscopy confirmation of the two Near IR brightest Submillimetre Galaxies at z ~ 3.5 |
| C | 40-GTC35/19B | Martin Guerrero Roncel | G (9. hrs) | HORuS | Understanding the Hard X-ray Emission from Single White Dwarfs |
| C | 12-GTC7-A/19B | Riccardo Scarpa | G (2. hrs) | Osiris | Probing Broad Absorption Line quasar outflows with gravitational microlensing |
| C | 12-GTC8-B/19B | Riccardo Scarpa | A (2. hrs) | EMIR | Probing Broad Absorption Line quasar outflows with gravitational microlensing |
| C | 141-GTC136/19B | Antonio de Ugarte Postigo | G (12.75 hrs) | HIPERCAM | Connecting GRBs and the Star-Formation-Rate Density: An Unbiased Optical/NIR Host-Galaxy Survey |
| C | 45-GTC40/19B | Ascensión del Olmo Orozco | G (8. hrs) | Osiris | Observing feedback at its nuclear origin in highly accreting quasars |
| C | 139-GTC135/19B | Ascensión del Olmo Orozco | A (20. hrs) | EMIR | Cosmology with Quasars: Extreme Quasars as Standard Candles |
| C | 41-GTC36/19B | Nicolas Lodieu | G (22.4 hrs) | MEGARA | Testing the role of metallicity in the close binary fraction of M dwarfs: theory vs observations |
| C | 50-GTC44-A/19B | Tariq Shahbaz | D (5.5 hrs) | CanariCam | Probing the inner jet magnetic field structure of nearby AGN with CanariCam |
| C | 50-GTC45-B/19B | Tariq Shahbaz | D (3.5 hrs) | CanariCam | Probing the inner jet magnetic field structure of nearby AGN with CanariCam |
| Filler | 64-GTC58/19B | David Jones | G (26. hrs) | Osiris | Evolution and pulsation of pre-white dwarfs: is nitrogen the key to understanding whether PG1159 stars pulsate? |
| Filler | 37-GTC33/19B | Mercedes Mollá Lorente | A (75. hrs) | MEGARA | MEGARA Spectral Library (filler proposal) |
| Filler | 134-GTC131/19B | Carlos Allende Prieto | A (50. hrs) | HORuS | Looking for the site of the r-process nucleosynthesis |
| Filler | 1-GTC1/19B | Jesús Maíz Apellániz | A (60. hrs) | Osiris | The Galactic O-Star Spectroscopic Survey (GOSSS): the faint northern sample |
| Filler | 46-GTC41/19B | Javier Licandro Goldaracena | A (40. hrs) | Osiris | Hydrated families in the central main belt: Adeona and Dora |
| Filler | 60-GTC57/19B | Julia de Leon Cruz | A (20. hrs) | Osiris | Visible spectra of near-Earth asteroids accesible to spacecraft |
| Filler | 72-GTC69/19B | Nancy Elias Rosa | G (20. hrs) | Osiris | Peeking into the Very Center of Stellar Explosions with GTC Nebular Spectroscopy. |
| Filler | 93-GTC95/19B | Virginia Cúneo | A (25.5 hrs) | Osiris | Optical disc winds from accreting white dwarfs |
| Filler | 27-GTC24/19B | Riccardo Scarpa | A (28.5 hrs) | Osiris | Looking for neutrino sources with optical telescopes |