Development and design of Second Earth Initiative Spectrograph (2ES)

Julian Stürmer; Lars A. Buchhave; Niels C. Jessen; Søren M. Pedersen; Andreas Seifahrt; Stanimir Letchev; Damien Jones; Luke Gers; Rafael Brahm; Andrés Jordan; Thomas Henning; Laura Kreidberg; Andreas Quirrenbach; Ansgar Reiners

doi:10.1117/12.3019107

18 July 2024 Development and design of Second Earth Initiative Spectrograph (2ES)

Julian Stürmer, Lars A. Buchhave, Niels C. Jessen, Søren M. Pedersen, Andreas Seifahrt, Stanimir Letchev, Damien Jones, Luke Gers, Rafael Brahm, Andrés Jordan, Thomas Henning, Laura Kreidberg, Andreas Quirrenbach, Ansgar Reiners

Author Affiliations +

Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 130968E (2024) https://doi.org/10.1117/12.3019107
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

We report on the design of 2ES (Second Earth Initiative Spectrograph): a new fiber-fed, high-resolution, high-precision radial velocity echelle spectrograph for the 2.2m ESO/MPG telescope in Chile, which will cover the visible wavelength range ∼370nm to 850nm with a resolution of 120, 000. 2ES will be dedicated to a >5-year observing program with access to the majority (2/3) of the telescope time with the goal of discovering temperate terrestrial Earth-mass planets in the habitable zone around the bright solar-type stars. To achieve this goal, 2ES aims for ultra-high instrumental radial-velocity precision and an observing strategy that involves high-cadence observation of the brightest Sun-like stars in the Southern Hemisphere. Here, we present an overview of the project, its observation strategy, the optical design as well as the opto-mechanical concepts and calibration strategies to achieve the required instrument stability.

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Julian Stürmer, Lars A. Buchhave, Niels C. Jessen, Søren M. Pedersen, Andreas Seifahrt, Stanimir Letchev, Damien Jones, Luke Gers, Rafael Brahm, Andrés Jordan, Thomas Henning, Laura Kreidberg, Andreas Quirrenbach, and Ansgar Reiners "Development and design of Second Earth Initiative Spectrograph (2ES)", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 130968E (18 July 2024); https://doi.org/10.1117/12.3019107

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