TRAFICOS - an Echelle Zeeman spectrograph

Details TRAFICOS - an Echelle Zeeman spectrograph TRAFICOS - an Echelle Zeeman spectrograph

Aug 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997an....318..291h&link_type=abstract

Astronomische Nachrichten, vol. 318, no. 5, p. 291.

Computer Science

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11

Scientific paper

We describe the TRAnsportable FIbre COupled echelle 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 Th{u}ringer 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.

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