RT Journal Article T1 MEGARA Optical design: the new integral field unit and multi-object spectrograph for the GTC 10m telescope A1 García Vargas, María Luisa A1 Sánchez Blanco, Ernesto A1 Carrasco, Esperanza A1 Gil De Paz, Armando A1 Páez, Gonzalo A1 Pérez, Ana A1 Gallego Maestro, Jesús A1 Sánchez, Francisco A1 Vílchez, José M. AB We describe the optical design of MEGARA, the future optical Integral Field Unit (IFU) and Multi-Object Spectrograph (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). PB SPIE-Int Soc Optical Engineering SN 0277-786X YR 2012 FD 2012 LK https://hdl.handle.net/20.500.14352/44860 UL https://hdl.handle.net/20.500.14352/44860 LA eng NO © 2012 SPIE. Conference on Optical Systems Design (2012. Barcelona, Spain). MEGARA is being funded by GRANTECAN, public entity responsible for the management and operation of GTC. The sliced-pupil grating design efforts are part of a collaborative project between the SME FRACTAL and the UCM. The first prototype received funds from the Madrid Regional Government (CAM) through grant 22/2009 for Aero-spatial Innovation. The development of this concept for large telescopes (VIENTOS project) has been co-funded by CDTI (Development and Industrial Transfer Center; Ministry of Economy and Competiveness, Spain) under the Industry for Science program IdC-20101106. The authors thank also the support received from the Consolider-Ingenio 2010 Program grant CSD2006-00070 "First Science with the GTC" and the Spanish National Plan for Astronomy & Astrophysics grant AyA2009-10368. The LICA-UCM laboratory is funded by the Moncloa "Campus de Excelencia Internacional". NO Gran Telescopio Canarias, GRANTECAN (GTC) NO Comunidad de Madrid NO Consolider-Ingenio 2010 Program (MICINN) NO Programa Nacional de Astronomía y Astrofísica (PNAyA), España NO Campus de Excelencia Internacional, Moncloa NO SME FRACTAL NO Universidad Complutense de Madrid NO Fondo Europeo de Desarrollo Regional para el Fomento de la Innovación en el Sector Aeroespacial de la Comunidad de Madrid NO Centro para el Desarrollo Tecnológico Industrial (CDTI), MINECO NO Ministerio de Economía y Competitividad (MINECO), España NO Ministerio de Ciencia e Innovación (MICINN), España DS Docta Complutense RD 5 abr 2025