8 July 2018 ELT-HIRES the high resolution instrument for the ELT: optical design and instrument architecture
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The first generation of ELT instruments will include an optical-infrared High Resolution Spectrograph, conventionally indicated as ELT-HIRES. This paper describes the optical design and overall architecture of the instrument whose main capabilities can be summarized as follows. – Fibers fed specrographs with resolving power R=100,000 (HR-modes), R=150,000 (UHR-modes) and R=20,000 (MR-modes). – Simultaneous wavelength coverage from 400 nm to 1800 nm; extendable to 300-2400 nm. – Spectrometers with fixed configurations and without moving optical parts. – Maximum size of entrance apertures ideal for seeing limited observations. – Many observing modes, including seeing-limited single-object spectroscopy, multi-objects medium resolution spectroscopy and IFU observations with different spatial scales, down to the diffraction limit of the ELT telescope. – Observing modes defined and selected in interfaces outside of the spectrographs. – Modular design compatible with a minimal baseline that can be subsequently expanded and upgraded.
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
E. Oliva, E. Oliva, A. Tozzi, A. Tozzi, D. Ferruzzi, D. Ferruzzi, M. Riva, M. Riva, M. Genoni, M. Genoni, A. Marconi, A. Marconi, R. Maiolino, R. Maiolino, L. Origlia, L. Origlia, "ELT-HIRES the high resolution instrument for the ELT: optical design and instrument architecture", Proc. SPIE 10702, Ground-based and Airborne Instrumentation for Astronomy VII, 107028O (8 July 2018); doi: 10.1117/12.2309923; https://doi.org/10.1117/12.2309923


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