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