ANDES, the high resolution spectrometer for the ELT: fiber link and observing modes

A. Tozzi; A. Zanutta; A. Brucalassi; M. Iuzzolino; R. Briguglio; D. Ferruzzi; M. Aliverti; M. Genoni; G. Pariani; M. Riva; G. Murray; E. Oliva

doi:10.1117/12.2628904

29 August 2022 ANDES, the high resolution spectrometer for the ELT: fiber link and observing modes

A. Tozzi, A. Zanutta, A. Brucalassi, M. Iuzzolino, R. Briguglio, D. Ferruzzi, M. Aliverti, M. Genoni, G. Pariani, M. Riva, G. Murray, E. Oliva

Author Affiliations +

Proceedings Volume 12184, Ground-based and Airborne Instrumentation for Astronomy IX; 121843P (2022) https://doi.org/10.1117/12.2628904
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

The first generation of ELT instruments includes an optical-infrared High Resolution Spectrograph, formerly indicated as ELT-HIRES and recently christened ANDES (ArmazoNes high Dispersion Echelle Spectrograph). This paper describes the design of the fiber link that carries the light from the telescope to the spectrometers via several selectable optical paths that in turn define the two baseline observing modes of the instrument, namely: – Seeing limited observing mode, where the light from the ELT is collected by two large fibers (~0.8" sky projected diameter) and is uniformly redistributed into smaller fibers that terminate in a linear structure aligned along the spectrometer slit. – Integral field (IFU) observing mode, where the focal plane of the ELT is reimaged at different scales (down to the diffraction limit) and fed into a bundle of fibers that covers a small hexagonal field of view and terminate in a linear structure aligned along the spectrometer slit.

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A. Tozzi, A. Zanutta, A. Brucalassi, M. Iuzzolino, R. Briguglio, D. Ferruzzi, M. Aliverti, M. Genoni, G. Pariani, M. Riva, G. Murray, and E. Oliva "ANDES, the high resolution spectrometer for the ELT: fiber link and observing modes", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 121843P (29 August 2022); https://doi.org/10.1117/12.2628904

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