Share Email Print
cover

Proceedings Paper

A new fiber slit assembly for the FOCES spectrograph
Author(s): Hanna Kellermann; Frank Grupp; Anna Brucalassi; Florian Lang-Bardl; Christian Franik; Ulrich Hopp; Ralf Bender
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

After successful operation at the Calar Alto telescope until 2009, and extensive lab tests at the Munich University Observatory the high resolution Échelle spectrograph FOCES (Fiber Optics Cassegrain Échelle Spectrograph) is now about to be reinstalled at the 2 m Wendelstein Observatory in the German Alps. For this new phase of operation FOCES will be equipped with new components that will improve time stability and wavelength calibration. With these modifications FOCES will meet the requirements for performing precision radial velocity measurements on a competitive level.

One of the key features of the upgraded spectrograph is the new calibration system, which uses a laser frequency comb as reference light source. Another aspect is the possibility to perform simultaneous wavelength calibration, while recording science data. For this purpose a new 4-fiber slit has been developed, which opens up the possibility to feed light from different sources at the same time through the entrance slit of the spectrograph. We present a detailed characterization of this new device, based on the results of extensive lab tests performed at the Munich University Observatory.

Paper Details

Date Published: 11 September 2015
PDF: 9 pages
Proc. SPIE 9605, Techniques and Instrumentation for Detection of Exoplanets VII, 96051R (11 September 2015); doi: 10.1117/12.2187975
Show Author Affiliations
Hanna Kellermann, Max-Planck Institute for Extraterrestrial Physics (Germany)
Univ. Observatory Munich (Germany)
Frank Grupp, Max-Planck Institute for Extraterrestrial Physics (Germany)
Univ. Observatory Munich (Germany)
Anna Brucalassi, Max-Planck Institute for Extraterrestrial Physics (Germany)
Univ. Observatory Munich (Germany)
Florian Lang-Bardl, Univ. Observatory Munich (Germany)
Christian Franik, Univ. Observatory Munich (Germany)
Ulrich Hopp, Max-Planck Institute for Extraterrestrial Physics (Germany)
Univ. Observatory Munich (Germany)
Ralf Bender, Max-Planck Institute for Extraterrestrial Physics (Germany)
Univ. Observatory Munich (Germany)


Published in SPIE Proceedings Vol. 9605:
Techniques and Instrumentation for Detection of Exoplanets VII
Stuart Shaklan, Editor(s)

© SPIE. Terms of Use
Back to Top