RT Book, Section
T1 MEGARA. Large pupil element tests and performance
A1 Martínez-Delgado, I.
A1 Sánchez-Blanco, E.
A1 Pérez-Calpena, A.
A1 García-Vergasa, M.L.
A1 Maldonado, X.M.
A1 Gil De Paz, Armando
A1 Carrasco, E.
A1 Gallego Maestro, Jesús
A1 Iglesias-Páramo, J.
A1 Sánchez Moreno, F.M.
A1 MEGARA, Team
AB MEGARA is a third generation spectrograph for the Spanish 10.4m telescope (GTC) providing two observing modes: a large central Integral Field Unit (IFU), called the Large Compact Bundle (LCB), covering a FOV of 12.5 × 11.3 arcsec^(2) , and a Multi-Object Spectrograph (MOS) with a FOV of 3.5 × 3.5 arcmin^(2) . MEGARA will observe the whole visible range from 3650A to 10000A allowing different spectral resolutions (low, medium and high) with R = 6000, 11000 and 18000 respectively. The dispersive elements are placed at the spectrograph pupil position in the path of the collimated beam and they are composed of a set of volume phase hologram gratings (VPHs) sandwiched between two flat windows and coupled in addition to two prisms in the case of the medium- and high-resolution units. We will describe the tests and setups developed to check the requirements of all units, as well as the obtained performance at laboratory.
PB SPIE-Int. Soc. Optical  Engineering
SN 978-1-5106-0203-8
YR 2016
FD 2016-07-22
LK https://hdl.handle.net/20.500.14352/19566
UL https://hdl.handle.net/20.500.14352/19566
LA eng
NO © 2016 SPIE. Conference on Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II (2016. Edinburgh/UK).
DS Docta Complutense
RD 4 abr 2025