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

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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 2.2 m ESO/MPG telescope in Chile, which will cover the visible wavelength range ∼370 nm to 850 nm 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.

Original languageEnglish
Title of host publicationGround-Based and Airborne Instrumentation for Astronomy X
EditorsJulia J. Bryant, Kentaro Motohara, Joel R. Vernet
PublisherSPIE
ISBN (Electronic)9781510675155
DOIs
StatePublished - 2024
Externally publishedYes
EventGround-Based and Airborne Instrumentation for Astronomy X 2024 - Yokohama, Japan
Duration: 16 Jun 202421 Jun 2024

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume13096
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceGround-Based and Airborne Instrumentation for Astronomy X 2024
Country/TerritoryJapan
CityYokohama
Period16/06/2421/06/24

Keywords

  • LFC
  • etalon
  • radial velocity
  • spectrograph
  • sun-like stars

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