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Proceedings Paper

Optical solutions for the multi-IFU instrument EAGLE for the European ELT
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Paper Abstract

This paper summarizes the different optical concepts developed for the EAGLE Phase A design. EAGLE will be an MOAO (Multi-object AO) IFU spectrometer operating between 0.8 and 2.5μm. The EAGLE consortium have developed different concepts for the challenging problem of acquiring more than twenty objects in the patrol field of view (FOV), correcting the wavefront along the line of sight to each of the objects and analyzing each object spatially and spectrally with an Integral Field Spectrograph. The target selection FOV will be ≥20 square arcmin and the individual target FOV can be selected to be either 1.65×1.65arcsec or 1.65×3.3arcsec. They will be sampled spatially at 75mas and with spectral resolutions of 4000 and 10000. Optical designs for target acquisition systems, integral-field unit, and spectrographs have been developed. These will be compared and the expected performance will be described in terms of the number of targets, overall patrol field of view, individual field of view, throughput, spectral resolving power and image quality.

Paper Details

Date Published: 9 July 2008
PDF: 12 pages
Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70141L (9 July 2008); doi: 10.1117/12.789860
Show Author Affiliations
Martyn Wells, UK Astronomy Technology Ctr., Royal Observatory (United Kingdom)
Sébastien Vives, Observatoire Astronomique de Marseille-Provence (France)
Eric Prieto, Observatoire Astronomique de Marseille-Provence (France)
Philippe Laporte, Observatoire de Paris, CNRS, UPMC, Univ. Paris Diderot (France)
Peter R. Hastings, UK Astronomy Technology Ctr., Royal Observatory (United Kingdom)
Chris Evans, UK Astronomy Technology Ctr., Royal Observatory (United Kingdom)
Robert Content, Univ. of Durham (United Kingdom)
Fanny Chemla, Observatoire de Paris, CNRS, UPMC, Univ. Paris Diderot (France)


Published in SPIE Proceedings Vol. 7014:
Ground-based and Airborne Instrumentation for Astronomy II
Ian S. McLean; Mark M. Casali, Editor(s)

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