| Band | Ref. CAT | PI | Allocated hours | Instrument | Title |
|---|
| A | 56-GTC42/21B | Kazushi Iwasawa | G (29.5hrs) | Osiris | Exploring a low-mass fast-growing population of supermassive black holes in the early Universe |
| A | 43-GTC31-A/21B | David Jones | 6 G (1.8hrs) | Osiris | Multi-wavelength target of opportunity follow-up of newly-discovered luminous red novae |
| A | 43-GTC32-B/21B | David Jones | 6 A (1hrs) | EMIR | Multi-wavelength target of opportunity follow-up of newly-discovered luminous red novae |
| A | 21-GTC16/21B | Montserrat Villar Martin | A (13hrs) | EMIR | Have we detected the first extra-galactic near-IR molecular Hydrogen absorber? |
| A | 46-GTC33/21B | Ignacio Negueruela Díez | A (3.5hrs) | MEGARA | A test on quasi-homogeneous evolution |
| A | 8-GTC6/21B | Alberto Rebassa Mansergas | G (6.6hrs) | Osiris | The third shortest period double degenerate |
| A | 28-GTC21/21B | Nancy Elias Rosa | G (10.4hrs) | Osiris | Peeking into the Very Center of Stellar Explosions with GTC Nebular Spectroscopy. |
| A | 89-GTC63/21B | Amalia Corral Ramos | D (4hrs) | Osiris | Spectroscopic identification of a high redshift X-ray Compton Thick AGN candidate |
| A | 48-GTC35/21B | Ignacio Ferreras | A (10hrs) | MEGARA | Constraints on star-formation driven outflows with MEGARA/IFU |
| A | 55-GTC41/21B | Helmut Dannerbauer | D (30hrs) | Osiris | Optical confirmation of the richest overdensity beyond z=5 |
| A | 95-GTC68/21B | Javier Licandro Goldaracena | G (16hrs) | Osiris | Visible spectra of the TNOs that will be visited by JWST large program |
| B | 12-GTC8/21B | Teodoro Muñoz Darias | 10 A (1hrs) | MEGARA | X-ray Binary Transients: accretion disc winds and nebulae. |
| B | 72-GTC50/21B | Elham Eftekhari | A (25hrs) | EMIR | Relic galaxies as an empirical benchmark for the presence of intermediate-age stellar populations in ETGs |
| B | 14-GTC9-A/21B | Javier Licandro Goldaracena | 4 A (1hrs) | Osiris | Characterizing new discovered faint Main Belt Comets |
| B | 14-GTC10-B/21B | Javier Licandro Goldaracena | 2 A (1hrs) | Osiris | Characterizing new discovered faint Main Belt Comets |
| B | 80-GTC54-A/21B | Giuseppe Morello | A (5.5hrs) | Osiris | Transmission spectroscopy of the hottest cotton candy planet |
| B | 80-GTC55-B/21B | Giuseppe Morello | A (5.5hrs) | Osiris | Transmission spectroscopy of the hottest cotton candy planet |
| B | 66-GTC45-A/21B | Josefa Becerra González | 1 A (13hrs) | EMIR | Characterizing the diversity of kilonovae |
| B | 66-GTC46-C/21B | Josefa Becerra González | 1 D (5hrs) | Osiris | Characterizing the diversity of kilonovae |
| B | 90-GTC64/21B | Rafael Guzman Llorente | G (10hrs) | EMIR | EMIR-MOS Observation of high-z HII galaxies: Precision Cosmology beyond z>1 |
| B | 41-GTC28-A/21B | Nicolas Lodieu | G (5hrs) | Osiris | The first optical study of metal-poor T dwarfs |
| B | 41-GTC29-B/21B | Nicolas Lodieu | G (7hrs) | Osiris | The first optical study of metal-poor T dwarfs |
| B | 103-GTC71-C/21B | Ismael Pérez Fournon | 5 G (1hrs) | Osiris | Gravitationally lensed SN discovery and follow-up, contribution to the HST LensWatch program |
| B | 103-GTC72-D/21B | Ismael Pérez Fournon | 10 G (1hrs) | Osiris | Gravitationally lensed SN discovery and follow-up, contribution to the HST LensWatch program |
| B | 71-GTC49/21B | Javier Licandro Goldaracena | A (10hrs) | EMIR | Digging-up iced fossils in the Solar System II: a search for methanol ice on TNOs |
| B | 68-GTC47/21B | Luca Costantin | D (13.5hrs) | MEGARA | Mining the unrevealed population of compact red-nugget relics in disk galaxies. |
| B | 59-GTC44/21B | Raúl de la Fuente Marcos | D (6.5hrs) | Osiris | Peering beyond the heliopause horizon with GTC/OSIRIS: further observations of the farthest known Solar System objects 2018 AG37, 2018 VG18, 2020 FA31 and 2020 FY30 |
| B | 104-GTC73-A/21B | Antonio de Ugarte Postigo | 4 A (2.5hrs) | EMIR | GRBs, their progenitors and their environments: Focusing on the high-redshift universe |
| B | 104-GTC74-B/21B | Antonio de Ugarte Postigo | 6 A (1.1hrs) | Osiris | GRBs, their progenitors and their environments: Focusing on the high-redshift universe |
| B | 54-GTC40/21B | Roberto Raddi | D (5hrs) | Osiris | Quantitative spectral analysis of two partly burned thermonuclear-supernova survivors |
| B | 32-GTC25/21B | Jorge Romero Gómez | D (30hrs) | Osiris | Spectroscopic observation of UDGs in Abell 2634 |
| B | 70-GTC48/21B | Cristina Catalán Torrecilla | G (1.8333hrs) | MEGARA | The regulation of star formation in the central regions of galaxies via galactic outflows: the case of Mrk 231 |
| B | 7-GTC4-A/21B | Alberto Rebassa Mansergas | G (30hrs) | Osiris | Follow-up spectroscopy of extremely-low mass white dwarfs identified in Gaia DR2 |
| B | 7-GTC5-B/21B | Alberto Rebassa Mansergas | A (15hrs) | Osiris | Follow-up spectroscopy of extremely-low mass white dwarfs identified in Gaia DR2 |
| B | 108-GTC81-A/21B | David Alexander Kann | 1 A (5hrs) | EMIR | GTC follow-up of binary-merger induced Kilonovae in the electromagnetic domain |
| B | 108-GTC82-B/21B | David Alexander Kann | 1 D (2hrs) | MEGARA | GTC follow-up of binary-merger induced Kilonovae in the electromagnetic domain |
| B | 108-GTC83-C/21B | David Alexander Kann | 1 A (8hrs) | Osiris | GTC follow-up of binary-merger induced Kilonovae in the electromagnetic domain |
| B | 92-GTC66/21B | Victor J. Sanchez Bejar | A (7hrs) | EMIR | Direct emission light from a transiting brown dwarf in Praesepe |
| B | 15-GTC11/21B | Pilar Ruiz Lapuente | G (20hrs) | Osiris | Improved dark energy determination with SNe Ia at z>1 within the Subaru program using the Hyper Suprime Camera and the GTC |
| B | 82-GTC57/21B | Marianna Annunziatella | D (30hrs) | EMIR | Catch Them Before they Quench: The First Comprehensive Look at Ultra-massive Star-forming Galaxies at 3 |
| B | 73-GTC51/21B | Eduardo Martin Guerrero de Escalante | G (6hrs) | Osiris | The lithium test in brown dwarfs with dynamical masses |
| B | 51-GTC37-A/21B | Maria Luisa Garcia Vargas | G (3.5hrs) | MEGARA | Unveiling the stellar population in the peculiar low metallicity star forming galaxy J0159+0751 |
| B | 57-GTC43/21B | José Feliciano Agüí Fernández | G (11hrs) | MEGARA | The host-galaxy environments of short GRBs with MEGARA |
| B | 42-GTC30/21B | Jose Antonio Acosta Pulido | D (4hrs) | MEGARA | 2-D spectroscopic study of the host galaxy of gamma-ray emitting NLSy1 1H 0323+342 |
| C | 87-GTC59/21B | Christina Thoene | G (19hrs) | MEGARA | 3D kinematics and abundances in SLSN hosts with MEGARA |
| C | 51-GTC38-B/21B | Maria Luisa Garcia Vargas | G (3.5hrs) | MEGARA | Unveiling the stellar population in the peculiar low metallicity star forming galaxy J0159+0751 |
| C | 4-GTC3/21B | Nicolas Lodieu | A (68.7hrs) | EMIR | The Mass Function of the Galactic Halo Down to the Hydrogen Burning Mass Limit |
| C | 27-GTC20/21B | Raúl de la Fuente Marcos | A (7hrs) | Osiris | Investigating active members of the outer asteroid belt with GTC/OSIRIS: 2019 OE31 |
| C | 3-GTC2/21B | Raquel Fores Toribio | D (4.14hrs) | Osiris | Measuring the redshift of the lensed source in B0445+123 to determine H0. |
| C | 81-GTC56/21B | Elham Eftekhari | A (19.2hrs) | EMIR | Deep IR spectroscopy of Sombrero Globular Clusters with EMIR |
| C | 93-GTC67/21B | Martin Guerrero Roncel | G (6hrs) | MEGARA | MEGARA Spatio-kinematic Investigation of the Iconic Nova Remnant T Aur |
| C | 30-GTC24/21B | Alberto Dominguez | D (7hrs) | MEGARA | Unraveling the origin of relativistic jets with GTC-MEGARA |
| C | 29-GTC22-A/21B | Nancy Elias Rosa | G (15.7hrs) | Osiris | Looking at the Gap Transients from a new perspective. |
| C | 29-GTC23-B/21B | Nancy Elias Rosa | A (3hrs) | EMIR | Looking at the Gap Transients from a new perspective. |
| C | 36-GTC27/21B | Angeles Diaz Beltran | D (4.3hrs) | MEGARA | Mapping stellar feedback in very low metallicity starburst galaxies with large N/O and He/H excess |
| C | 52-GTC39/21B | Michael Beasley | G (38hrs) | MEGARA | M-SALSA - Megara Survey of Andromeda gLobular cluSter Abundances |
| C | 86-GTC58/21B | Mercedes Mollá Lorente | D (6.3hrs) | MEGARA | A deep spectroscopic blue mapping of Leoncino galaxy with MEGARA IFU |
| C | 107-GTC80/21B | Stefan Geier | G (22.5hrs) | Osiris | Lifting the dust bias on the chemical evolution history with a novel quasars selection technique |
| C | 18-GTC14/21B | Borja Montoro Molina | A (9.5hrs) | MEGARA | Investigating the true nature and extreme physics of the born-again planetary nebula A 30 |
| C | 102-GTC70/21B | Christina Thoene | G (24hrs) | Osiris | Pre-explosion spectroscopy of potential SN progenitors - a legacy datacube of NGC 2403 |
| C | 49-GTC36/21B | Anastasio Díaz Sánchez | A (3.5hrs) | EMIR | Spectroscopic characterization of an ultra-bright Submillimeter Galaxy at z=1.6 with Milky Way-like low gas excitation. |
| C | 98-GTC69/21B | Raúl de la Fuente Marcos | A (6.5hrs) | Osiris | Investigating interstellar comet candidates with GTC/OSIRIS: C/2021 C4 (ATLAS) |
| C | 16-GTC12/21B | Bernabé Cedrés Expósito | G (13hrs) | MEGARA | Characterizing the physical properties of a dwarf galaxy in front of UGC10427 |
| C | 47-GTC34/21B | Angeles Diaz Beltran | G (2.5hrs) | MEGARA | A High Spatial and spectral resolution study of circumnuclear star-forming regions (CNSFR) |
| C | 17-GTC13/21B | Bernabé Cedrés Expósito | G (9hrs) | MEGARA | Galaxies with spots of enhanced gas velocity dispersion |
| C | 20-GTC15/21B | David Garcia Alvarez | A (11.5hrs) | Osiris | Unveiling the binary nature of fast rotators in young clusters. I. The Praesepe cluster |
| Filler | 11-GTC7/21B | Mercedes Mollá Lorente | A (75hrs) | MEGARA | MEGASTAR. MEGARA-GTC Stellar Library |
| Filler | 1-GTC1/21B | Jesús Maíz Apellániz | A (60hrs) | Osiris | Spectroscopic follow-up of the cross-match of the OB stars in the ALS catalog with Gaia |
| Filler | 91-GTC65/21B | Rafael Guzman Llorente | A (25hrs) | MEGARA | Building Statistics: The 2nd Parameters Effect on HII Galaxies' L-sigma Relation with MEGARA-IFU |
| Filler | 35-GTC26/21B | Julia de Leon Cruz | A (20hrs) | Osiris | Visible spectra of near-Earth asteroids accesible to spacecraft |
| Filler | 76-GTC52/21B | David Morate González | A (20hrs) | EMIR | Near-infrared spectra of Potentially Hazardous Asteroids (PHAs) with EMIR III |
| Filler | 25-GTC17-A/21B | María Caballero García | A (6hrs) | Osiris | Identifying the nature of UV transients discovered with Swift UVOT during GW follow-up |
| Filler | 25-GTC18-B/21B | María Caballero García | A (3hrs) | Osiris | Identifying the nature of UV transients discovered with Swift UVOT during GW follow-up |