Stability of the FOCES spectrograph using an astro-frequency comb as calibrator

Anna Brucalassi; Frank Grupp; Hanna Kellermann; Liang Wang; Florian Lang-Bardl; Nils Baisert; Shao Ming Hu; Ulrich Hopp; Ralf Bender

doi:10.1117/12.2231395

9 August 2016 Stability of the FOCES spectrograph using an astro-frequency comb as calibrator

Anna Brucalassi, Frank Grupp, Hanna Kellermann, Liang Wang, Florian Lang-Bardl, Nils Baisert, Shao Ming Hu, Ulrich Hopp, Ralf Bender

Author Affiliations +

Proceedings Volume 9908, Ground-based and Airborne Instrumentation for Astronomy VI; 99085W (2016) https://doi.org/10.1117/12.2231395
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

We present the results of a series of measurements conducted using the upgraded Fiber Optic Cassegrain Echelle Spectrograph (FOCES)¹ intended to be operated at the 2.0 m Fraunhofer Telescope at the Wendelstein Observatory (Germany) in combination with a laser frequency comb as calibrator. Details about the laboratory set-up of the system integrated with FOCES are shown. Different analysis techniques are applied to investigate the calibration precision and the medium-long term stability of the system in term of changes in stellar radial velocity.

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Anna Brucalassi, Frank Grupp, Hanna Kellermann, Liang Wang, Florian Lang-Bardl, Nils Baisert, Shao Ming Hu, Ulrich Hopp, and Ralf Bender "Stability of the FOCES spectrograph using an astro-frequency comb as calibrator", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99085W (9 August 2016); https://doi.org/10.1117/12.2231395

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