Issue |
A&A
Volume 526, February 2011
|
|
---|---|---|
Article Number | A69 | |
Number of page(s) | 12 | |
Section | Astronomical instrumentation | |
DOI | https://doi.org/10.1051/0004-6361/201015435 | |
Published online | 23 December 2010 |
HERMES: a high-resolution fibre-fed spectrograph for the Mercator telescope⋆
1
Instituut voor Sterrenkunde, K.U.Leuven, Celestijnenlaan 200D,
3001
Leuven,
Belgium
e-mail: Gert.Raskin@ster.kuleuven.be
2
Royal Observatory of Belgium, Ringlaan 3, 1180
Brussel,
Belgium
3
Institut d’Astronomie et d’Astrophysique, Université Libre de
Bruxelles, CP 226,
Boulevard du Triomphe,
1050
Brussels,
Belgium
4
Thüringer Landessternwarte Tautenburg,
Sternwarte 5,
07778
Tautenburg,
Germany
5
European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748
Garching,
Germany
6
Observatoire de Genève, Chemin des Maillettes 51, 1290
Sauverny,
Switzerland
7
Dept. of Physics and Astronomy, K.U.Leuven,
Celestijnenlaan 200D,
3001
Leuven,
Belgium
Received:
19
July
2010
Accepted:
11
October
2010
The HERMES high-resolution spectrograph project aims at exploiting the specific potential of small but flexible telescopes in observational astrophysics. The optimised optical design of the spectrograph is based on the well-proven concept of white-pupil beam folding for high-resolution spectroscopy. In this contribution we present the complete project, including the spectrograph design and procurement details, the telescope adaptor and calibration unit, the detector system, as well as the optimised data-reduction pipeline. We present a detailed performance analysis to show that the spectrograph performs as specified both in optical quality and in total efficiency. With a spectral resolution of 85 000 (63 000 for the low-resolution fibre), a spectral coverage from 377 to 900 nm in a single exposure and a peak efficiency of 28%, HERMES proves to be an ideal instrument for building up time series of high-quality data of variable (stellar) phenomena.
Key words: instrumentation: spectrographs / techniques: spectroscopic / techniques: radial velocities / stars: abundances
© ESO, 2010
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.