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Proceedings Paper

EAGLE ISS: a modular twin-channel integral-field near-IR spectrograph
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Paper Abstract

The ISS (Integral-field Spectrograph System) has been designed as part of the EAGLE Phase A Instrument Study for the E-ELT. It consists of two input channels of 1.65x1.65 arcsec field-of-view, each reconfigured spatially by an imageslicing integral-field unit to feed a single near-IR spectrograph using cryogenic volume-phase-holographic gratings to disperse the image spectrally. A 4k x 4k array detector array records the dispersed images. The optical design employs anamorphic magnification, image slicing, VPH gratings scanned with a novel cryo-mechanism and a three-lens camera. The mechanical implementation features IFU optics in Zerodur, a modular bench structure and a number of highprecision cryo-mechanisms.

Paper Details

Date Published: 15 July 2010
PDF: 12 pages
Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77351H (15 July 2010); doi: 10.1117/12.857177
Show Author Affiliations
Peter Hastings, UK Astronomy Technology Ctr., The Royal Observatory Edinburgh (United Kingdom)
Brian Stobie, UK Astronomy Technology Ctr., The Royal Observatory Edinburgh (United Kingdom)
Sébastien Vivès, Observatoire Astronomique de Marseille-Provence (France)
Pascal Vola, Observatoire Astronomique de Marseille-Provence (France)
Martyn Wells, UK Astronomy Technology Ctr., The Royal Observatory Edinburgh (United Kingdom)
Christopher Evans, UK Astronomy Technology Ctr., The Royal Observatory Edinburgh (United Kingdom)


Published in SPIE Proceedings Vol. 7735:
Ground-based and Airborne Instrumentation for Astronomy III
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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