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.
Original language | English |
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Title of host publication | Proceedings of SPIE 10702 - Ground-based and Airborne Instrumentation for Astronomy VII |
Editors | Christopher J. Evans, Luc Simard, Hideki Takami |
Number of pages | 5 |
Volume | 10702 |
Publisher | SPIE - International Society for Optical Engineering |
Publication date | 2018 |
Article number | 107022S |
ISBN (Print) | 9781510619517 |
DOIs | |
Publication status | Published - 2018 |
Event | SPIE Astronomical Telescopes + Instrumentation 2018 - Austin, United States Duration: 10 Jun 2018 → 15 Jun 2018 |
Conference
Conference | SPIE Astronomical Telescopes + Instrumentation 2018 |
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Country/Territory | United States |
City | Austin |
Period | 10/06/2018 → 15/06/2018 |
Sponsor | 4D Technology Corporation, Andor Technology, Ltd., Astronomical Consultants and Equipment, Inc., Giant Magellan Telescope, SPIE |
Keywords
- Optical fibers
- Radial velocity
- FIES
- Echelle
- Spectrograph