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Proceedings Paper • new

FIES fiber injection upgrade
Author(s): Julian Stürmer; Andreas Seifahrt; Christian Schwab; Davide Gandolfi; Pilar Montañes-Rodriguez; Lars Buchhave
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Paper Abstract

We report on the upgrade of the fiber link of FIES, the high-resolution echelle spectrograph at the Nordic Optical Telescope (NOT). In order to improve the radial velocity (RV) stability of FIES, we replaced the circular fibers by octagonal and rectangular ones to utilize their superior scrambling performance. Two additional fibers for a planned polarimetry mode were added during the upgrade. The injection optics and the telescope front-end were also replaced. The first on-sky RV measurements indicate that the influence of guiding errors is greatly suppressed, and the overall RV precision of FIES has significantly improved.

Paper Details

Date Published: 6 July 2018
PDF: 5 pages
Proc. SPIE 10702, Ground-based and Airborne Instrumentation for Astronomy VII, 107022S (6 July 2018); doi: 10.1117/12.2313052
Show Author Affiliations
Julian Stürmer, The Univ. of Chicago (United States)
Andreas Seifahrt, The Univ. of Chicago (United States)
Christian Schwab, Macquarie Univ. (Australia)
Davide Gandolfi, Univ. Degli Studi di Torino (Italy)
Pilar Montañes-Rodriguez, Instituto de Astrofísica de Canarias (Spain)
Lars Buchhave, Technical Univ. of Denmark (Denmark)


Published in SPIE Proceedings Vol. 10702:
Ground-based and Airborne Instrumentation for Astronomy VII
Christopher J. Evans; Luc Simard; Hideki Takami, Editor(s)

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