FIDEOS: a high resolution echelle spectrograph for the ESO 1m telescope at La Silla

Marcelo Tala; A. Berdja; M. Jones; L. Vanzi; S. Ropert; M. Flores; C. Viscasillas

doi:10.1117/12.2056551

28 July 2014 FIDEOS: a high resolution echelle spectrograph for the ESO 1m telescope at La Silla

Marcelo Tala, A. Berdja, M. Jones, L. Vanzi, S. Ropert, M. Flores, C. Viscasillas

Proceedings Volume 9147, Ground-based and Airborne Instrumentation for Astronomy V; 914789 (2014) https://doi.org/10.1117/12.2056551
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

FIDEOS (FIbre Dual Echelle Optical Spectrograph) is a fibre-fed bench-mounted high-resolution echelle spec- trograph for the 1-m telescope at ESO in La Silla, Chile. It is based on a 44.41 lines/mm 70° blaze angle echelle grating in quasi-Littrow mode, providing spectral resolution of R ~ 42 000, covering the spectral range from 400 nm to 680 nm. The detector is a 2k×2k CCD with 15 μm pixels. The spectrograph will be fed by two 50 µm core diameter fibres for the astronomical object and the simultaneous calibration lamp, respectively. Alter- natively, an iodine cell will be mounted on the telescope-spectrograph interface, providing a secondary spectral calibration source. In addition, the instrument will be mounted on a fixed optical-bench without movable parts rather than the CCD shutter and its enclosure will be thermally controlled to ensure opto-mechanical stability. Since the FIDEOS will deliver high resolution and spectral stability, it will be optimized for precision radial velocities.

Citation Download Citation

Marcelo Tala, A. Berdja, M. Jones, L. Vanzi, S. Ropert, M. Flores, and C. Viscasillas "FIDEOS: a high resolution echelle spectrograph for the ESO 1m telescope at La Silla", Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 914789 (28 July 2014); https://doi.org/10.1117/12.2056551

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