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Proceedings Paper

STELES mechanical design
Author(s): Ruben Dominguez; Vanessa B. P. Macanhan; Bruno V. Castilho; Marcio V. de Arruda; Clemens D. Gneiding; Andreas Klossek; Ney Diniz; Diego E. Mercadal; Denis Cariello; Sascha Voegel; Beatrice Nehrkorn; Fernando Lourenço
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Paper Abstract

The SOAR Telescope Echelle Spectrograph - STELES - is part of the Brazilian participation on the 4.1m SOAR telescope second-generation instrumentation. In view of SOAR´s high image quality and moderately large collecting area and the near UV capability, it will be able to yield high quality spectroscopic data for a large variety of objects of astrophysical interests. The spectrograph is a R4 cross-dispersed echelle fed by the SOAR Nasmyth focus, operating in a quasi-Littrow white pupil configuration, and a resolving power of R ≈ 50,000, covering the 300-900nm spectral range in one shot. STELES is a bench spectrograph which will be mounted vertically on one side of the SOAR Telescope fork. The ninetydegree inversion of the mechanical components, due to the vertical position of the instrument, plus the close proximity of most components, due to the spectrograph compactness, were requirements carefully observed during the mechanical design process. This paper describes the mechanical characteristics of the individual assemblies that make up the STELES mechanical design. The STELES instrument can be separated into two sections, the fore optics, and the spectrograph. The fore optics has the mechanisms from the SOAR telescope down to the STELES bench spectrograph, and the bench spectrograph has the mechanisms for the spectrograph covering the red and blue spectrum.

Paper Details

Date Published: 24 September 2012
PDF: 14 pages
Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 844632 (24 September 2012); doi: 10.1117/12.926903
Show Author Affiliations
Ruben Dominguez, Steward Observatory, The Univ. of Arizona (United States)
Vanessa B. P. Macanhan, Lab. Nacional de Astrofísica (Brazil)
Bruno V. Castilho, Lab. Nacional de Astrofísica (Brazil)
Marcio V. de Arruda, Lab. Nacional de Astrofísica (Brazil)
Clemens D. Gneiding, Lab. Nacional de Astrofísica (Brazil)
Andreas Klossek, Lab. Nacional de Astrofísica (Brazil)
Ney Diniz, Lab. Nacional de Astrofísica (Brazil)
Diego E. Mercadal, Lab. Nacional de Astrofísica (Brazil)
Denis Cariello, Lab. Nacional de Astrofísica (Brazil)
Sascha Voegel, Lab. Nacional de Astrofísica (Brazil)
Beatrice Nehrkorn, Lab. Nacional de Astrofísica (Brazil)
Fernando Lourenço, Lab. Nacional de Astrofísica (Brazil)


Published in SPIE Proceedings Vol. 8446:
Ground-based and Airborne Instrumentation for Astronomy IV
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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