| Band | Ref. CAT | PI | Awarded time (h) | Instrument | Title |
|---|
| A Visitor | 61-GTC43/25A | Julia de Leon Cruz | D (13hrs) | Osiris | Evolution of the Didymos binary asteroid system, target of the ESA Hera mission |
| A Visitor | 71-GTC53-A/25A | Eduardo Martin Guerrero de Escalante | A (16hrs) | EMIR | GTC follow-up spectroscopy of ultracool dwarfs discovered in the Euclid Deep Field North |
| A Visitor | 71-GTC54-B/25A | Eduardo Martin Guerrero de Escalante | D (14hrs) | Osiris | GTC follow-up spectroscopy of ultracool dwarfs discovered in the Euclid Deep Field North |
| A | 87-GTC81/25A | Paulo Alberto Miles Páez | A (42hrs) | EMIR | A search for volatile clouds in the 700-400 K atmospheres of T-to-Y transition brown dwarfs |
| A | 97-GTC98/25A | Pablo Rodríguez Gil | G (4.8hrs) | HIPERCAM | The physical and scattering properties of the planetary debris around WD 1145+017 |
| A | 56-GTC39/25A | Javier Álvarez Márquez | D (9hrs) | Osiris | Deep spectroscopy of a lensed N-emitter: testing "exotic" and rare phenomena - proto-globular cluster formation, supermassive or very massive stars, or others - happening at high-z |
| A | 50-GTC34-A/25A | David Aguado | 15 A (1hrs) | Osiris | Pursuing the first lights from core-collapse supernovae: rapid follow-up observations of Einstein Probe alerts |
| A | 130-GTC134-A/25A | Daniel Mata Sánchez | 5 A (1hrs) | HIPERCAM | Understanding the origin of fast X-ray transients discovered with Einstein Probe |
| A | 130-GTC135-B/25A | Daniel Mata Sánchez | 2 A (1hrs) | EMIR | Understanding the origin of fast X-ray transients discovered with Einstein Probe |
| A | 130-GTC136-C/25A | Daniel Mata Sánchez | 5 A (1.5hrs) | Osiris | Understanding the origin of fast X-ray transients discovered with Einstein Probe |
| A | 8-GTC5/25A | Carina Fian | G (12.5hrs) | Osiris | Probing the Far-Ultraviolet Emitting Regions in High-Redshift Quasars |
| A | 10-GTC7/25A | Giulia Golini | D (16hrs) | Osiris | Ultra-deep imaging of galaxies defying the cold dark matter model |
| A | 136-GTC161-A/25A | Jordi Blanco Pozo | A (5.96hrs) | HIPERCAM | Studying Stellar Surface Heterogeneities Using Planetary Transits for JWST Targets |
| A | 136-GTC162-B/25A | Jordi Blanco Pozo | A (3.62hrs) | HIPERCAM | Studying Stellar Surface Heterogeneities Using Planetary Transits for JWST Targets |
| A | 136-GTC163-C/25A | Jordi Blanco Pozo | A (4.26hrs) | HIPERCAM | Studying Stellar Surface Heterogeneities Using Planetary Transits for JWST Targets |
| B | 40-GTC28/25A | Ricardo Amorin | D (17.5hrs) | Osiris | Lyman-alpha spectroscopy of extreme [OIII] emitters at z=3.1-3.7 selected with JWST/NIRCAM photometry |
| B | 101-GTC106/25A | Joao Pedro Benedetti | D (13.5hrs) | Osiris | Young stars in old galaxies: deep UV-spectroscopy of a z~0.5 cluster |
| B | 32-GTC22-A/25A | Manuel Linares Alegret | A (4.7hrs) | Osiris | GTC-OSIRIS follow-up of three new redback candidates |
| B | 32-GTC23-B/25A | Manuel Linares Alegret | A (2.8hrs) | Osiris | GTC-OSIRIS follow-up of three new redback candidates |
| B Visitor | 1-GTC1/25A | Montserrat Armas Padilla | G (7hrs) | HIPERCAM | The true nature of the X-ray binary 4U 1822-00: ultracompact or progenitor? |
| B | 62-GTC44/25A | Vikram Dhillon | D (8hrs) | HIPERCAM | A search for optical emission from Long-Period Radio Transients |
| B | 96-GTC96-A/25A | Antonia Morales Garoffolo | G (10hrs) | Osiris | Peeking into the Very Center of Stellar Explosions with GTC Nebular Observations. |
| B | 96-GTC97-B/25A | Antonia Morales Garoffolo | G (13hrs) | Osiris | Peeking into the Very Center of Stellar Explosions with GTC Nebular Observations. |
| B | 142-GTC167/25A | Nadejda Blagorodnova Mujortova | G (8.5hrs) | Osiris | Searching for luminous red nova precursors |
| B | 29-GTC19-A/25A | David Jones | 12 G (1.8hrs) | Osiris | Multi-wavelength target of opportunity follow-up of newly-discovered luminous red novae |
| B | 29-GTC20-B/25A | David Jones | 12 A (1hrs) | EMIR | Multi-wavelength target of opportunity follow-up of newly-discovered luminous red novae |
| B | 109-GTC112/25A | Manuel Ángel Pérez Torres | D (4hrs) | Osiris | Proof for merging massive black holes through discovery of a recoiled compact stellar cluster |
| B | 123-GTC128-A/25A | José Feliciano Agüí Fernández | 6 A (1hrs) | EMIR | GRBs into the SVOM and Einstein Probe era |
| B | 123-GTC129-B/25A | José Feliciano Agüí Fernández | 1 A (3hrs) | EMIR | GRBs into the SVOM and Einstein Probe era |
| B | 123-GTC130-C/25A | José Feliciano Agüí Fernández | 11 A (1hrs) | Osiris | GRBs into the SVOM and Einstein Probe era |
| B | 123-GTC131-D/25A | José Feliciano Agüí Fernández | 7 A (1hrs) | HIPERCAM | GRBs into the SVOM and Einstein Probe era |
| B | 143-GTC168/25A | Stefan Geier | A (15hrs) | EMIR | Where is the galaxy counterpart of the Damped Lyman-alpha Absorber towards GQ1218+0832? |
| B | 105-GTC109/25A | Alberto Dominguez | D (7hrs) | Osiris | Probing the extremes: Mpc-scale jets launched by low-mass black holes |
| B | 113-GTC114-A/25A | Francesco Coti Zelati | 4 G (1hrs) | Osiris | Prompt GTC study of unidentified transient LMXBs discovered by the Einstein Probe |
| B | 113-GTC115-B/25A | Francesco Coti Zelati | 4 D (1.2hrs) | HIPERCAM | Prompt GTC study of unidentified transient LMXBs discovered by the Einstein Probe |
| B | 5-GTC3/25A | Teodoro Muñoz Darias | 10 A (1hrs) | Osiris | X-ray Binary Transients: accretion disc winds and nebulae. |
| B | 19-GTC12/25A | Vikram Dhillon | 3 D (1hrs) | HIPERCAM | High-cadence optical monitoring of the magnetar SGR 1935+2154 during its active phase |
| B | 95-GTC89-A/25A | Alberto Javier Castro Tirado | 3 A (2hrs) | Osiris | Investigating the physical origin and radiation mechanisms of long-duration GRBs |
| B | 95-GTC90-B/25A | Alberto Javier Castro Tirado | 4 A (2hrs) | Osiris | Investigating the physical origin and radiation mechanisms of long-duration GRBs |
| B | 95-GTC91-C/25A | Alberto Javier Castro Tirado | 8 A (0.8hrs) | Osiris | Investigating the physical origin and radiation mechanisms of long-duration GRBs |
| B | 95-GTC92-D/25A | Alberto Javier Castro Tirado | 4 A (1.5hrs) | EMIR | Investigating the physical origin and radiation mechanisms of long-duration GRBs |
| B | 95-GTC93-E/25A | Alberto Javier Castro Tirado | 2 A (1.5hrs) | Osiris | Investigating the physical origin and radiation mechanisms of long-duration GRBs |
| B | 95-GTC94-F/25A | Alberto Javier Castro Tirado | 2 A (1hrs) | EMIR | Investigating the physical origin and radiation mechanisms of long-duration GRBs |
| B | 95-GTC95-G/25A | Alberto Javier Castro Tirado | 8 A (0.5hrs) | EMIR | Investigating the physical origin and radiation mechanisms of long-duration GRBs |
| B | 140-GTC165/25A | Helmut Dannerbauer | A (32hrs) | EMIR | GTC/EMIR Spectroscopy of Two Most Massive Overdensities at z = 2.24 |
| B | 6-GTC4/25A | Roi Alonso Sobrino | A (4.7hrs) | MEGARA | Weighing the unseen companion of a red giant |
| B | 60-GTC42/25A | Pablo Rodríguez Gil | D (43hrs) | HIPERCAM | Measuring orbital evolution due to gravitational wave emission, tides, and mass transfer in twenty-four ultra-tight binaries |
| B | 90-GTC83/25A | María Rosa Zapatero Osorio | G (32hrs) | HIPERCAM | Wind velocities of brown dwarf atmospheres |
| B | 134-GTC140-A/25A | Oscar Porqueras Leon | A (0.3917hrs) | Osiris | Spectrophotometric Characterisation of the Stellar Surface of TRAPPIST-1 During Planetary Transits Observed with JWST |
| B | 134-GTC141-B/25A | Oscar Porqueras Leon | A (0.3917hrs) | Osiris | Spectrophotometric Characterisation of the Stellar Surface of TRAPPIST-1 During Planetary Transits Observed with JWST |
| B | 134-GTC142-C/25A | Oscar Porqueras Leon | A (0.3917hrs) | Osiris | Spectrophotometric Characterisation of the Stellar Surface of TRAPPIST-1 During Planetary Transits Observed with JWST |
| B | 134-GTC143-D/25A | Oscar Porqueras Leon | A (0.3917hrs) | Osiris | Spectrophotometric Characterisation of the Stellar Surface of TRAPPIST-1 During Planetary Transits Observed with JWST |
| B | 134-GTC144-E/25A | Oscar Porqueras Leon | A (0.3917hrs) | Osiris | Spectrophotometric Characterisation of the Stellar Surface of TRAPPIST-1 During Planetary Transits Observed with JWST |
| B | 134-GTC145-F/25A | Oscar Porqueras Leon | A (0.3917hrs) | Osiris | Spectrophotometric Characterisation of the Stellar Surface of TRAPPIST-1 During Planetary Transits Observed with JWST |
| B | 134-GTC146-G/25A | Oscar Porqueras Leon | A (0.3917hrs) | Osiris | Spectrophotometric Characterisation of the Stellar Surface of TRAPPIST-1 During Planetary Transits Observed with JWST |
| B | 134-GTC147-H/25A | Oscar Porqueras Leon | A (0.3917hrs) | Osiris | Spectrophotometric Characterisation of the Stellar Surface of TRAPPIST-1 During Planetary Transits Observed with JWST |
| B | 134-GTC148-I/25A | Oscar Porqueras Leon | A (0.3917hrs) | Osiris | Spectrophotometric Characterisation of the Stellar Surface of TRAPPIST-1 During Planetary Transits Observed with JWST |
| B | 134-GTC149-J/25A | Oscar Porqueras Leon | A (0.3917hrs) | Osiris | Spectrophotometric Characterisation of the Stellar Surface of TRAPPIST-1 During Planetary Transits Observed with JWST |
| B | 134-GTC150-K/25A | Oscar Porqueras Leon | A (0.3917hrs) | Osiris | Spectrophotometric Characterisation of the Stellar Surface of TRAPPIST-1 During Planetary Transits Observed with JWST |
| B | 134-GTC151-L/25A | Oscar Porqueras Leon | A (0.3917hrs) | Osiris | Spectrophotometric Characterisation of the Stellar Surface of TRAPPIST-1 During Planetary Transits Observed with JWST |
| B | 134-GTC152-M/25A | Oscar Porqueras Leon | A (0.3917hrs) | Osiris | Spectrophotometric Characterisation of the Stellar Surface of TRAPPIST-1 During Planetary Transits Observed with JWST |
| B | 134-GTC153-N/25A | Oscar Porqueras Leon | A (0.3917hrs) | Osiris | Spectrophotometric Characterisation of the Stellar Surface of TRAPPIST-1 During Planetary Transits Observed with JWST |
| B | 134-GTC154-O/25A | Oscar Porqueras Leon | A (0.3917hrs) | Osiris | Spectrophotometric Characterisation of the Stellar Surface of TRAPPIST-1 During Planetary Transits Observed with JWST |
| B | 134-GTC155-P/25A | Oscar Porqueras Leon | A (0.3917hrs) | Osiris | Spectrophotometric Characterisation of the Stellar Surface of TRAPPIST-1 During Planetary Transits Observed with JWST |
| B | 134-GTC156-Q/25A | Oscar Porqueras Leon | A (0.3917hrs) | Osiris | Spectrophotometric Characterisation of the Stellar Surface of TRAPPIST-1 During Planetary Transits Observed with JWST |
| B | 134-GTC157-R/25A | Oscar Porqueras Leon | A (0.3917hrs) | Osiris | Spectrophotometric Characterisation of the Stellar Surface of TRAPPIST-1 During Planetary Transits Observed with JWST |
| B | 134-GTC158-S/25A | Oscar Porqueras Leon | A (0.3917hrs) | Osiris | Spectrophotometric Characterisation of the Stellar Surface of TRAPPIST-1 During Planetary Transits Observed with JWST |
| B | 134-GTC159-T/25A | Oscar Porqueras Leon | A (0.3917hrs) | Osiris | Spectrophotometric Characterisation of the Stellar Surface of TRAPPIST-1 During Planetary Transits Observed with JWST |
| B | 141-GTC166/25A | Raúl de la Fuente Marcos | 6 D (5hrs) | Osiris | Investigating the Arjuna asteroid belt with GTC/OSIRIS: A ToO approach |
| B | 9-GTC6/25A | Carina Fian | G (11.5hrs) | Osiris | Is There Evidence of Keplerian Rotation in the Inner Broad-Line Regions of Quasars? |
| B | 82-GTC66/25A | Cesar Esteban Lopez | D (15hrs) | Osiris | Improving the determination of Fe abundances in star-forming regions |
| B | 93-GTC86-A/25A | Alberto Javier Castro Tirado | 10 A (0.4hrs) | Osiris | GTC follow-up of gravitational radiation sources in the Multi-messenger Era |
| B | 93-GTC87-B/25A | Alberto Javier Castro Tirado | 14 A (1hrs) | Osiris | GTC follow-up of gravitational radiation sources in the Multi-messenger Era |
| B | 93-GTC88-C/25A | Alberto Javier Castro Tirado | 6 A (1hrs) | EMIR | GTC follow-up of gravitational radiation sources in the Multi-messenger Era |
| B | 132-GTC138/25A | Tariq Shahbaz | 12 A (1hrs) | HIPERCAM | Probing plasma acceleration zones in the inner jets of X-ray binaries |
| B Visitor | 91-GTC84/25A | Jesús Gallego Maestro | D (10.3hrs) | Osiris | Unveiling the nature of a sample of Extreme Emission Line Galaxies at intermediate redshifts |
| B | 135-GTC160/25A | Shane O'Sullivan | A (23.2hrs) | MEGARA | Mapping the electron number density of high-redshift galaxies in order to measure their magnetic fields |
| B | 11-GTC8/25A | Mar Mezcua Pallerola | A (13.05hrs) | Osiris | Photometric continuum and broad-line reverberation mapping of a prototype IMBH in POX 52 |
| B | 88-GTC82/25A | Ricardo Amorin | D (3.98hrs) | MEGARA | Cometary star-forming dwarf galaxy with extreme emission line ratio as local analog of high-z protogalactic units |
| B | 121-GTC122-A/25A | José Feliciano Agüí Fernández | 1 A (8hrs) | EMIR | GTC follow-up of binary-merger induced Kilonovae in the electromagnetic domain |
| B | 121-GTC123-B/25A | José Feliciano Agüí Fernández | 1 A (3hrs) | Osiris | GTC follow-up of binary-merger induced Kilonovae in the electromagnetic domain |
| B | 121-GTC124-C/25A | José Feliciano Agüí Fernández | 6 A (1hrs) | Osiris | GTC follow-up of binary-merger induced Kilonovae in the electromagnetic domain |
| B | 121-GTC125-D/25A | José Feliciano Agüí Fernández | 1 D (2hrs) | MEGARA | GTC follow-up of binary-merger induced Kilonovae in the electromagnetic domain |
| B | 121-GTC126-E/25A | José Feliciano Agüí Fernández | 6 A (1hrs) | HIPERCAM | GTC follow-up of binary-merger induced Kilonovae in the electromagnetic domain |
| B | 51-GTC35/25A | Maria Cruz Galvez Ortiz | G (17.1hrs) | Osiris | Test and calibrating ultracool atmospheric models with new benchmark brown dwarfs from Gaia and Pan-STARRS |
| B | 75-GTC57-A/25A | José Miguel Torrejón Vázquez | G (2.4hrs) | MEGARA | Shedding UV light on the nebular HeII problem |
| B | 75-GTC58-B/25A | José Miguel Torrejón Vázquez | G (2.4hrs) | MEGARA | Shedding UV light on the nebular HeII problem |
| B | 75-GTC59-C/25A | José Miguel Torrejón Vázquez | G (2.4hrs) | MEGARA | Shedding UV light on the nebular HeII problem |
| B | 75-GTC60-D/25A | José Miguel Torrejón Vázquez | G (1.8hrs) | MEGARA | Shedding UV light on the nebular HeII problem |
| B | 75-GTC61-E/25A | José Miguel Torrejón Vázquez | G (2.4hrs) | MEGARA | Shedding UV light on the nebular HeII problem |
| B | 75-GTC62-F/25A | José Miguel Torrejón Vázquez | G (2.4hrs) | MEGARA | Shedding UV light on the nebular HeII problem |
| B | 75-GTC63-G/25A | José Miguel Torrejón Vázquez | G (2.4hrs) | MEGARA | Shedding UV light on the nebular HeII problem |
| C | 83-GTC67/25A | Maria Luisa Garcia Vargas | A (20hrs) | MEGARA | MegaPopStar. Filling the gaps in H-R stellar parameters by observing MEGASTAR weak sources in visitor mode |
| C | 100-GTC102-A/25A | Raúl de la Fuente Marcos | D (1hrs) | Osiris | The first L5 Earth trojan: A physical characterization with GTC/OSIRIS |
| C | 100-GTC103-B/25A | Raúl de la Fuente Marcos | D (3hrs) | Osiris | The first L5 Earth trojan: A physical characterization with GTC/OSIRIS |
| C | 100-GTC104-C/25A | Raúl de la Fuente Marcos | D (4hrs) | Osiris | The first L5 Earth trojan: A physical characterization with GTC/OSIRIS |
| C | 100-GTC105-D/25A | Raúl de la Fuente Marcos | D (0.5hrs) | Osiris | The first L5 Earth trojan: A physical characterization with GTC/OSIRIS |
| C | 117-GTC117-A/25A | Cristina Cabello González | D (50hrs) 2025A | MEGARA | Systematic study of reionization-era analogs: mapping the ionizing structure and spatially-resolved properties |
| C | 57-GTC40/25A | Alberto Rebassa Mansergas | A (17hrs) | HIPERCAM | HiPERCAM follow-up observations of 4 ultramassive pulsating white dwarf candidates |
| C | 17-GTC11/25A | Giuseppina Battaglia | G (5.5hrs) | MEGARA | Unveiling a nuclear star cluster in the tidal tails of the dwarf galaxy NGC5238 |
| C | 147-GTC169/25A | Helmut Dannerbauer | D (12.5hrs) | Osiris | The HI Tomography of a z=2.24 protocluster: understanding the enhancement of SMGs in the outskirts |
| C | 41-GTC29/25A | Artemi Camps Fariña | G (6.5hrs) | MEGARA | A peculiar case of positive AGN feedback in an interacting pair of galaxies |
| C | 139-GTC164/25A | Luca Costantin | A (15hrs) | EMIR | A Milky Way-like barred spiral galaxy beyond Cosmic Noon |
| C | 54-GTC37/25A | Aina Ferrer Burjachs | G (19.4hrs) | Osiris | Hierarchical triple systems containing white dwarfs |
| C | 68-GTC49/25A | Vikram Dhillon | G (14.8hrs) | HIPERCAM | Eclipse timing the Milky Way's gravitational potential using double white-dwarf binares |
| C | 106-GTC110/25A | Nataliya Ramos Chernenko | A (25hrs) | EMIR | Unveiling galaxy protoclusters at Cosmic Noon |
| C | 55-GTC38-B/25A | Nada Ihanec | G (4hrs) | Osiris | GOTO-FAST: Real-time follow-up of infant transients on La Palma with TNG |
| C | 59-GTC41/25A | David Garcia Alvarez | G (26.5hrs) | Osiris | Accretion, spots, dips: A statistical study of spectral variability in young stars |
| C | 64-GTC45/25A | Roberto Raddi | G (17.8hrs) | Osiris | A triple perspective on stellar evolution |
| C | 98-GTC99/25A | Johan Knapen | A (27.2hrs) | MEGARA | The formation of dwarf galaxies in low-density environments: probing the creation of featureless dwarfs and blue cores in dwarf early-type galaxies |
| C | 112-GTC113/25A | Luis Julián Goicoechea Santamaría | A (3.5hrs) | EMIR | Measuring the elusive redshift of the main deflector of HE 1413+117 |
| C | 131-GTC137/25A | Tariq Shahbaz | D (23hrs) | HIPERCAM | Constraining the pulsar mass from two black widow systems |
| C | 133-GTC139/25A | Armando Gil de Paz | D (28hrs) | Osiris | Mass profile (and substructures) of the galaxy cluster Abell 2390 using the Caustic technique on a complete sample of Red & Blue members |
| C | 78-GTC64/25A | David Garcia Alvarez | A (6.5hrs) | Osiris | CSS0854 - a potential pre-cataclysmic binary with sporadic outbursts. |
| C | 92-GTC85/25A | Vikram Dhillon | A (20.2hrs) | HIPERCAM | Eclipse timing the Milky Way's gravitational potential using main-sequence binaries |
| C | 52-GTC36/25A | Enrique Miguel García Zamora | A (44.8hrs) | Osiris | Unveiling the true nature of helium-atmosphere massive white dwarf candidates |
| C | 28-GTC18/25A | David Garcia Alvarez | A (15hrs) | EMIR | Spectroscopic follow-up of new eruptive young star candidates found with Gaia/ZTF |
| C | 27-GTC14-A/25A | Javier Zaragoza Cardiel | G (1.73hrs) | MEGARA | Dynamical study of detached Tidal Dwarf Galaxies |
| C | 27-GTC15-B/25A | Javier Zaragoza Cardiel | G (0.72hrs) | MEGARA | Dynamical study of detached Tidal Dwarf Galaxies |
| C | 27-GTC16-C/25A | Javier Zaragoza Cardiel | G (1.22hrs) | MEGARA | Dynamical study of detached Tidal Dwarf Galaxies |
| C | 27-GTC17-D/25A | Javier Zaragoza Cardiel | G (3.57hrs) | MEGARA | Dynamical study of detached Tidal Dwarf Galaxies |
| Filler | 107-GTC111/25A | Alejandro Lumbreras Calle | G (60hrs) | Osiris | Completing a Statistical Study of J-PLUS Extreme Emission Line Galaxies with OSIRIS+ Spectroscopy: a GTC Entryway to the Physics of Reionization |
| Filler | 103-GTC108/25A | Ignacio Negueruela Díez | A (35hrs) | Osiris | The distant and obscured Milky Way |
| Filler | 124-GTC132/25A | Sara Rodríguez Berlanas | A (19hrs) | Osiris | Massive runaway stars ejected from Cygnus OB2 |
| Filler | 65-GTC46/25A | Julia de Leon Cruz | A (20hrs) | Osiris | Visible spectra of newly discovered NEAs, PHAs, and NEAs accesible to spacecraft |
| Filler | 81-GTC65/25A | Maria Luisa Garcia Vargas | A (75hrs) | MEGARA | MEGASTAR. Filling the gaps in stellar parameters. |
| Filler | 4-GTC2/25A | Jesús Maíz Apellániz | A (60hrs) | Osiris | Spectroscopic follow-up of the cross-match of the OB stars in the ALS catalog with Gaia |
| Filler | 46-GTC31/25A | Xabier Pérez Couto | G (38hrs) | Osiris | The GTC-OSIRIS confirmation of polluted white dwarf candidates identified using Gaia XP spectra and Self-Organizing Maps |
| Filler | 122-GTC127/25A | David Garcia Alvarez | A (15hrs) | HIPERCAM | Microflares, a possible explanation on flare inactive rapidly rotating M dwarfs observed by TESS |