Performance of MEGARA spectrograph optical elements
2016; SPIE; Volume: 9908; Linguagem: Inglês
10.1117/12.2232208
ISSN1996-756X
AutoresE. Carrasco, G. Páez, Rafael Izazaga-Pérez, J. de la Luz Hurtado, C. Pérez, Francisca López Granados, Daniel Aguirre-Aguirre, E. Percino, J. Reyes, A. Gil de Paz, J. Gallego, J. Iglésias-Páramo,
Tópico(s)Optical Coatings and Gratings
ResumoMEGARA is the new IFU and multiobject spectrograph for Gran Telescopio Canarias. The spectograph will offer spectral resolution R fwhm ~ 6,000, 12,000 and 18,700. Except for the optical fibers and microlenses, the complete MEGARA optical system has been manufactured in Mexico. This includes a field lens, a 5-lenses collimator, a 7-lenses camera and a complete set of volume phase holographic gratings with 36 flat windows and 24 prisms. All these elements are very large and complex, with very efficient antireflection coatings. Here the optical performance of MEGARA collimator and camera lenses and the field lens is presented.
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