ANDES, the high resolution spectrometer for the ELT: the UBV spectrograph module

Michael Weber; Manfred Woche; Ilya Ilyin; Klaus G. Strassmeier; Ernesto Oliva

doi:10.1117/12.2629346

29 August 2022 ANDES, the high resolution spectrometer for the ELT: the UBV spectrograph module

Michael Weber, Manfred Woche, Ilya Ilyin, Klaus G. Strassmeier, Ernesto Oliva

Proceedings Volume 12184, Ground-based and Airborne Instrumentation for Astronomy IX; 1218439 (2022) https://doi.org/10.1117/12.2629346
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

The first generation of ELT instruments include an optical-infrared High Resolution Spectrograph, formerly indicated as ELT-HIRES and recently christened ANDES (ArmazoNes high Dispersion Echelle Spectrograph). Its modular design allows to position the calibration unit and the red & infrared spectrograph modules in the Coude room of the ELT for better thermal and mechanical stability. But to accommodate for a better UV throughput, the blue spectrograph module (UBV) will be positioned on the Nasmyth-platform of the telescope along with the front end of the system. We present the preliminary optical design of this UBV module, which extends the 400 nm blue cutoff of the baseline design to 350 nm by adding a third (the U-) arm. In addition to classical image quality calculations, we produce echelle-footprints which can be analyzed like regular observations.

Citation Download Citation

Michael Weber, Manfred Woche, Ilya Ilyin, Klaus G. Strassmeier, and Ernesto Oliva "ANDES, the high resolution spectrometer for the ELT: the UBV spectrograph module", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 1218439 (29 August 2022); https://doi.org/10.1117/12.2629346

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