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Proceedings Paper

First results of the 4-fiber upgrade of the high-resolution comb calibrated spectrograph FOCES
Author(s): Hanna Kellermann; Liang Wang; Vanessa Fahrenschon; Frank Grupp; Ulrich Hopp; Ralf Bender
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Paper Abstract

FOCES is a highly stabilized high-resolution optical Échelle spectrograph operated with the 2m telescope at the Wendelstein Observatory. After an extensive temperature- and pressure-stabilization upgrade, reaching the m/s-level, we now focus on the wavelength calibration process. Due to our latest improvements, we are able to perform simultaneous wavelength calibration using our new 4-_ber-slit assembly. This allows us to couple the spectrum of a star and light from a ThAr/UNe hollow cathode lamp or our frequency comb_ at the same time into the spectrograph. We present the design, production process and performance of this new multi-fiber assembly and also evaluate the stability as a test for the upcoming high precision radial velocity measurements in search of exoplanets.

Paper Details

Date Published: 9 September 2019
PDF: 9 pages
Proc. SPIE 11117, Techniques and Instrumentation for Detection of Exoplanets IX, 111171O (9 September 2019);
Show Author Affiliations
Hanna Kellermann, Max-Planck-Institut für extraterrestrische Physik (Germany)
Univ.-Sternwarte München (Germany)
Liang Wang, Max-Planck-Institut für extraterrestrische Physik (Germany)
Vanessa Fahrenschon, Max-Planck-Institut für extraterrestrische Physik (Germany)
Univ.-Sternwarte München (Germany)
Frank Grupp, Univ.-Sternwarte München (Germany)
Max-Planck-Institut für extraterrestrische Physik (Germany)
Ulrich Hopp, Univ.-Sternwarte München (Germany)
Max-Planck-Institut für extraterrestrische Physik (Germany)
Ralf Bender, Max-Planck-Institut für extraterrestrische Physik (Germany)
Univ.-Sternwarte München (Germany)


Published in SPIE Proceedings Vol. 11117:
Techniques and Instrumentation for Detection of Exoplanets IX
Stuart B. Shaklan, Editor(s)

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