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15 July 2010 EAGLE ISS: a modular twin-channel integral-field near-IR spectrograph
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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.
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Peter Hastings, Brian Stobie, Sébastien Vivès, Pascal Vola, Martyn Wells, and Christopher Evans "EAGLE ISS: a modular twin-channel integral-field near-IR spectrograph", Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77351H (15 July 2010);

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