MEGARA: a new generation optical spectrograph for GTC

A. Gil de Paz; J. Gallego; E. Carrasco; J. Iglesias-Páramo; R. Cedazo; J. M. Vílchez; M. L. García-Vargas; X. Arrillaga; M. A. Carrera; A. Castillo-Morales; E. Castillo-Domínguez; M. C. Eliche-Moral; D. Ferrusca; E. González-Guardia; B. Lefort; M. Maldonado; R. A. Marino; I. Martínez-Delgado; I. Morales Durán; E. Mujica; G. Páez; S. Pascual; A. Pérez-Calpena; A. Sánchez-Penim; E. Sánchez-Blanco; S. Tulloch; M. Velázquez; J. Zamorano; A. L. Aguerri; D. Barrado y Naváscues; E. Bertone; N. Cardiel; A. Cava; J. Cenarro; M. Chávez; M. García; J. Guichard; R. Gúzman; A. Herrero; N. Huélamo; D. Hughes; J. Jiménez-Vicente; C. Kehrig; I. Márquez; J. Masegosa; Y. D. Mayya; J. Méndez-Abreu; M. Mollá; C. Muñoz-Tuñón; M. Peimbert; P. G. Pérez-González; E. Pérez Montero; M. Rodríguez; J. M. Rodríguez-Espinosa; L. Rodríguez-Merino; D. Rosa-González; J. Sánchez-Almeida; C. Sánchez Contreras; P. Sánchez-Blázquez; F. M. Sánchez Moreno; S. F. Sánchez; A. Sarajedini; F. Serena; S. Silich; S. Simón-Díaz; G. Tenorio-Tagle; E. Terlevich; R. Terlevich; S. Torres-Peimbert; I. Trujillo; Y. Tsamis; O. Vega; V. Villar

doi:10.1117/12.2047825

8 July 2014 MEGARA: a new generation optical spectrograph for GTC

A. Gil de Paz, J. Gallego, E. Carrasco, J. Iglesias-Páramo, R. Cedazo, J. M. Vílchez, M. L. García-Vargas, X. Arrillaga, M. A. Carrera, A. Castillo-Morales, E. Castillo-Domínguez, M. C. Eliche-Moral, D. Ferrusca, E. González-Guardia, B. Lefort, M. Maldonado, R. A. Marino, I. Martínez-Delgado, I. Morales Durán, E. Mujica, G. Páez, S. Pascual, A. Pérez-Calpena, A. Sánchez-Penim, E. Sánchez-Blanco, S. Tulloch, M. Velázquez, J. Zamorano, A. L. Aguerri, D. Barrado y Naváscues, E. Bertone, N. Cardiel, A. Cava, J. Cenarro, M. Chávez, M. García, J. Guichard, R. Gúzman, A. Herrero, N. Huélamo, D. Hughes, J. Jiménez-Vicente, C. Kehrig, I. Márquez, J. Masegosa, Y. D. Mayya, J. Méndez-Abreu, M. Mollá, C. Muñoz-Tuñón, M. Peimbert, P. G. Pérez-González, E. Pérez Montero, M. Rodríguez, J. M. Rodríguez-Espinosa, L. Rodríguez-Merino, D. Rosa-González, J. Sánchez-Almeida, C. Sánchez Contreras, P. Sánchez-Blázquez, F. M. Sánchez Moreno, S. F. Sánchez, A. Sarajedini, F. Serena, S. Silich, S. Simón-Díaz, G. Tenorio-Tagle, E. Terlevich, R. Terlevich, S. Torres-Peimbert, I. Trujillo, Y. Tsamis, O. Vega, V. Villar

Author Affiliations +

Proceedings Volume 9147, Ground-based and Airborne Instrumentation for Astronomy V; 91470O (2014) https://doi.org/10.1117/12.2047825
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

MEGARA (Multi-Espectrógrafo en GTC de Alta Resolución para Astronomía) is an optical Integral-Field Unit (IFU) and Multi-Object Spectrograph (MOS) designed for the GTC 10.4m telescope in La Palma. MEGARA offers two IFU fiber bundles, one covering 12.5x11.3 arcsec² with a spaxel size of 0.62 arcsec (Large Compact Bundle; LCB) and another one covering 8.5x6.7 arcsec² with a spaxel size of 0.42 arcsec (Small Compact Bundle; SCB). The MEGARA MOS mode will allow observing up to 100 objects in a region of 3.5x3.5 arcmin² around the two IFU bundles. Both the LCB IFU and MOS capabilities of MEGARA will provide intermediate-to-high spectral resolutions (R_FWHM~6,000, 12,000 and 18,700, respectively for the low-, mid- and high-resolution Volume Phase Holographic gratings) in the range 3650-9700ÅÅ. These values become R_FWHM~7,000, 13,500, and 21,500 when the SCB is used. A mechanism placed at the pseudo-slit position allows exchanging the three observing modes and also acts as focusing mechanism. The spectrograph is a collimator-camera system that has a total of 11 VPHs simultaneously available (out of the 18 VPHs designed and being built) that are placed in the pupil by means of a wheel and an insertion mechanism. The custom-made cryostat hosts an E2V231-84 4kx4k CCD. The UCM (Spain) leads the MEGARA Consortium that also includes INAOE (Mexico), IAA-CSIC (Spain), and UPM (Spain). MEGARA is being developed under a contract between GRANTECAN and UCM. The detailed design, construction and AIV phases are now funded and the instrument should be delivered to GTC before the end of 2016.

Citation Download Citation

A. Gil de Paz, J. Gallego, E. Carrasco, J. Iglesias-Páramo, R. Cedazo, J. M. Vílchez, M. L. García-Vargas, X. Arrillaga, M. A. Carrera, A. Castillo-Morales, E. Castillo-Domínguez, M. C. Eliche-Moral, D. Ferrusca, E. González-Guardia, B. Lefort, M. Maldonado, R. A. Marino, I. Martínez-Delgado, I. Morales Durán, E. Mujica, G. Páez, S. Pascual, A. Pérez-Calpena, A. Sánchez-Penim, E. Sánchez-Blanco, S. Tulloch, M. Velázquez, J. Zamorano, A. L. Aguerri, D. Barrado y Naváscues, E. Bertone, N. Cardiel, A. Cava, J. Cenarro, M. Chávez, M. García, J. Guichard, R. Gúzman, A. Herrero, N. Huélamo, D. Hughes, J. Jiménez-Vicente, C. Kehrig, I. Márquez, J. Masegosa, Y. D. Mayya, J. Méndez-Abreu, M. Mollá, C. Muñoz-Tuñón, M. Peimbert, P. G. Pérez-González, E. Pérez Montero, M. Rodríguez, J. M. Rodríguez-Espinosa, L. Rodríguez-Merino, D. Rosa-González, J. Sánchez-Almeida, C. Sánchez Contreras, P. Sánchez-Blázquez, F. M. Sánchez Moreno, S. F. Sánchez, A. Sarajedini, F. Serena, S. Silich, S. Simón-Díaz, G. Tenorio-Tagle, E. Terlevich, R. Terlevich, S. Torres-Peimbert, I. Trujillo, Y. Tsamis, O. Vega, and V. Villar "MEGARA: a new generation optical spectrograph for GTC", Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91470O (8 July 2014); https://doi.org/10.1117/12.2047825

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