A rubidium traced white-light etalon calibrator for MAROON-X

Julian Stürmer*, Andreas Seifahrt, Christian Schwab, Jacob L. Bean

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

3 Citations (Scopus)

Abstract

We report on the construction and testing of a vacuum-gap Fabry-Perot etalon calibrator for high precision radial velocity spectrographs. The etalon is referenced against hyper fine transitions of rubidium to provide a precise wavelength calibrator for MAROON-X, a new fiber-fed, red-optical, high-precision radial-velocity spectrograph currently under construction for one of the twin 6.5m Magellan Telescopes in Chile. We demonstrate a turnkey system, ready to be installed at any current and next generation radial velocity spectrograph that requires calibration over a wide spectral band-pass. Uncertainties in the position of one etalon line are at the 10 cm s-1 level in individual measurements taken at 4 Hz. Our long-term stability is mainly limited by aging effects of the spacer material Zerodur, which imprints a 12 cm s-1 daily drift. However, as the etalon position is traced by the rubidium reference with a precision of <3 cm s-1 for integration times longer than 10s, we can fully account for this effect at the RV data reduction level.

Original languageEnglish
Title of host publicationAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation II
EditorsRaman Navarro, James H. Burge
Place of PublicationBellingham, Washington
PublisherSPIE
Pages1-9
Number of pages9
ISBN (Electronic)9781510602045
ISBN (Print)9781510602038
DOIs
Publication statusPublished - 2016
EventAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation II - Edinburgh, United Kingdom
Duration: 26 Jun 20161 Jul 2016

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume9912
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation II
CountryUnited Kingdom
CityEdinburgh
Period26/06/161/07/16

Keywords

  • Comb
  • Echelle spectrograph
  • Etalon
  • Frequency standard
  • Optical fibers
  • Radial velocity

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  • Cite this

    Stürmer, J., Seifahrt, A., Schwab, C., & Bean, J. L. (2016). A rubidium traced white-light etalon calibrator for MAROON-X. In R. Navarro, & J. H. Burge (Eds.), Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II (pp. 1-9). [991229] (Proceedings of SPIE; Vol. 9912). Bellingham, Washington: SPIE. https://doi.org/10.1117/12.2232865