Open AccessPerformance of MEGARA spectrograph optical elements
Author(s) -
E. 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
Publication year - 2016
Publication title -
proceedings of spie, the international society for optical engineering/proceedings of spie
Language(s) - English
Resource type - Conference proceedings
SCImago Journal Rank - 0.192
H-Index - 176
eISSN - 1996-756X
pISSN - 0277-786X
DOI - 10.1117/12.2232208
Subject(s) - spectrograph , collimator , optics , lens (geology) , holography , microlens , prism , physics , materials science , spectral line , astronomy
MEGARA is the new IFU and multiobject spectrograph for Gran Telescopio Canarias. The spectograph will offer spectral resolution R-fwhm similar to 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
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom