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TRAFICOS – an Échelle Zeeman spectrograph
Author(s) -
Hildebrandt G.,
Scholz G.,
Rendtel J.,
Woche M.,
Lehmann H.
Publication year - 1997
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.2113180506
Subject(s) - spectrograph , physics , zeeman effect , telescope , calibration , spectrometer , adapter (computing) , stars , spectrum analyzer , optics , integral field spectrograph , magnetic field , astrophysics , astronomy , spectral line , computer science , computer hardware , quantum mechanics
We describe the TRAnsportable Flbre COupled échelle Spectrograph (TRAFICOS) equipped with a Zeeman analyzer and manufactured mainly for the observation of stellar magnetic fields. The spectrograph, designed at the Astrophysikalisches Institut Potsdam and constructed at the Thüringer Landessternwarte Tautenburg, is laid out in a quasi‐Littrow configuration. The part attached to the Nasmyth focus of the 2 m telescope contains the telescope adapter for the fibre input and output of the star and calibration light, the cases for the flatfield and the wavelength calibration, and the Zeeman analyzer. The optical scheme and the reduction software are mentioned in some details and the first results of the determination of the magnetic field and radial velocity of several stars are given showing the performance of the device in comparison with existing data.