BrG studies at high-spectral resolution with GRAVITY+: the design of a new high-resolution Germanium grism

Joel Sanchez-Bermudez; Rebeca García-López; Salvador Cuevas; Frank Eisenhauer; Senol Yazici; Gabor Matthaeus; Martin Steglich

doi:10.1117/12.3020375

28 August 2024 BrG studies at high-spectral resolution with GRAVITY+: the design of a new high-resolution Germanium grism

Joel Sanchez-Bermudez, Rebeca García-López, Salvador Cuevas , Frank Eisenhauer, Senol Yazici, Gabor Matthaeus, Martin Steglich

Author Affiliations +

Proceedings Volume 13095, Optical and Infrared Interferometry and Imaging IX; 130952F (2024) https://doi.org/10.1117/12.3020375
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

Since its introduction at the Very Large Telescope Interferometer (VLTI), the GRAVITY instrument has emerged as a key player in interferometry. Recognizing its substantial contributions, the European Southern Observatory and the GRAVITY consortium have embarked on an initiative to enhance the instrument's functions. This initiative, named GRAVITY+, aims to broaden the instrument's utility for the international astronomical community and foster new areas of research. GRAVITY+ incorporate advanced features such as a novel laser Adaptive Optics system and an improved fringe tracker to augment interferometric observation sky coverage. This paper details the development of a new Germanium (Ge) prism. This new technical capability of GRAVITY+ will serve to substantially increase the spectral resolution of the instrument to approximately R~15000. The design process, along with the scientific rationale underpinning this advancement, are thoroughly examined in this study.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Joel Sanchez-Bermudez, Rebeca García-López, Salvador Cuevas , Frank Eisenhauer, Senol Yazici, Gabor Matthaeus, and Martin Steglich "BrG studies at high-spectral resolution with GRAVITY+: the design of a new high-resolution Germanium grism", Proc. SPIE 13095, Optical and Infrared Interferometry and Imaging IX, 130952F (28 August 2024); https://doi.org/10.1117/12.3020375

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