MEGARA Optical design: the new integral field unit and multi-object spectrograph for the GTC 10m telescope

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García Vargas, María Luisa
Sánchez Blanco, Ernesto
Carrasco, Esperanza
Gil de Paz, Armando
Páez, Gonzalo
Pérez, Ana
Sánchez, Francisco
Vílchez, José M.
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SPIE-Int Soc Optical Engineering
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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).
© 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".
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[1] Gil de Paz, A., et al., “MEGARA: the future optical IFU and multi-object spectrograph for the 10.4m GTC telescope,” Proc. SPIE 8446, 4Q1-4Q9 (2012). doi:10.1117/12.925739. [2] Pérez Calpena, A., Arrillaga X., Gil de Paz, A., Sánchez Blanco. E., García Vargas, M.L., Carrera, M.A., Gallego, J., Carrasco E., Sánchez, F.M., Vílchez, J.M. & MEGARA Team, “MEGARA focal plane subsystems,” Proc. SPIE 8446, 5E1-5E15 (2012). [3] Carrasco, E., Sánchez Blanco, E., García Vargas, M.L., Gil de Paz A., Páez, G., Gallego, J., Sánchez, F.M., Vílchez, J.M and MEGARA Team, “MEGARA Spectrograph Optics,” Proc. SPIE 8446, 5B1-5B13 (2012). [4] Carrasco, E., Sánchez Blanco, E., García Vargas, M.L., Gil de Paz A., Gallego, J., Páez, G., Zamorano, J. and Castro, J., “Optical design for MEGARA: a multi-object spectrograph for the GTC,” Proc. SPIE 8011, 2D1-2D10 (2011). doi: 10.1117/12.903436 [5] Sánchez Blanco, E., García Vargas, M.L., Maldonado, M., Gallego, J., Gil de Paz, A., Carrasco, E., Pérez, A., Martínez Delgado, I. and Zamorano J., “Sliced-pupil grating: a novel concept for increasing spectral resolution,” Proc. SPIE 8011, 1I-1 - 1I-10 (2011). doi: 10.1117/12.903186 [6] García Vargas, M.L., Pérez, A., Gallego, J., Gil de Paz, A., Sánchez Blanco, E., Martínez Delgado, I., Maldonado M. and Zamorano J., “VIENTOS: a feasibility study of innovative pupil systems for the new generation of instruments in the large telescopes,” Proc. SPIE 8446, 7T1-7T15 (2012). doi:10.1117/12.926062.