RT Journal Article T1 MEGARA: the future optical IFU and multi-object spectrograph for the 10.4m GTC Telescope A1 Gil De Paz, Armando A1 Gallego Maestro, Jesús A1 Castillo Morales, María África A1 Eliche Moral, María del Carmen A1 Pascual Ramírez, Sergio A1 Sánchez Penim, Ainhoa A1 Villar, V. A1 Zamorano Calvo, Jaime A1 Cardiel López, Nicolás A1 Cava, A. A1 Pérez González, Pablo Guillermo AB In these proceedings we give a summary of the characteristics and current status of the MEGARA instrument, the future optical IFU and MOS for the 10.4-m Gran Telescopio Canarias (GTC). MEGARA is being built by a Consortium of public research institutions led by the Universidad Complutense de Madrid (UCM, Spain) that also includes INAOE (Mexico), IAA-CSIC (Spain) and UPM (Spain). The MEGARA IFU includes two different fiber bundles, one called LCB (Large Compact Bundle) with a field-of-view of 12.5x11.3 arcsec(2) and a spaxel size of 0.62 arcsec yielding spectral resolutions between R=6,800-17,000 and another one called SCB (Small Compact Bundle) covering 8.5x6.7 arcsec(2) with hexagonally-shaped and packed 0.42-arcsec spaxels and resolutions R=8,000-20,000. The MOS component allows observing up to 100 targets in 3.5x3.5 arcmin(2). Both the IFU bundles and the set of 100 robotic positioners of the MOS will be placed at one of the GTC Folded-Cass foci while the spectrographs (one in the case of the MEGARA-Basic concept) will be placed at the Nasmyth platform. On March 2012 MEGARA passed the Preliminary Design Review and its first light is expected to take place at the end of 2015. PB SPIE-Int Soc Optical Engineering SN 0277-786X YR 2012 FD 2012 LK https://hdl.handle.net/20.500.14352/44430 UL https://hdl.handle.net/20.500.14352/44430 LA eng NO Paz, A. Gil de, E. Carrasco, J. Gallego, F. M. Sánchez, J. M. Vílchez Medina, M. L. García-Vargas, X. Arrillaga, et al. «MEGARA: the future optical IFU and multi-object spectrograph for the 10.4m GTC telescope». En Ground-based and Airborne Instrumentation for Astronomy IV, 8446:1597-1605. SPIE, 2012. https://doi.org/10.1117/12.925739. NO © 2012 SPIE. Conference on Ground-Based and Airborne Telescopes (4º. 2012. Amsterdam, Netherlands). This project is partly funded by the Spanish Ministry of Science and Innovation (MICINN) under project AYA2009-10368, by the Madrid Regional Government through the AstroMadrid Project (CAM S2009/ESP- 1496) and by the Spanish MICINN under the Consolider Ingenio 2010 Program grant CSD2006-00070: First Science with the GTC. This work is being done in the framework of the Moncloa Campus of International Excellence (UCM-UPM). NO Ministerio de Ciencia, Innovación y Universidades (España) NO Comunidad de Madrid DS Docta Complutense RD 6 abr 2025