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Proceedings Paper

SIFUS: SOAR integral field unit spectrograph
Author(s): Jacques R. D. Lepine; Antonio Cesar de Oliveira; Milito Vieira Figueredo; Bruno Vas Castilho; Clemens Gneiding; Beatriz Barbuy; Damien J. Jones; Antonio Kanaan; Claudia Mendes de Oliveira; C. Strauss; Francisco Rodrigues; C. R.G. Andrade; Ligia Souza de Oliveira; J. B. de Oliveira
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Paper Abstract

We present the project of an optical spectrograph equipped with a 1300-element Integral Field Unit (IFU), that will be one of the main instruments of the SOAR (4m) telescope. The instrument consists of two separate parts, the fore-optics and the bench spectrograph, that are connected by an 11 m long fiber bundle. The fore optics system is installed at one of the Nasmyth focii of the telescope, and produces an image of the observed object on a 26x50 array of square microlenses, each 1 mm x 1 mm lens feeding one fiber. The fibers have 50 micron cores, and are aligned at the entrance of bench spectrograph to form a slit that feeds a 100 mm beam collimator. A set of Volume Phase-Holographic (VPH) transmission gratings can be interchanged by remote control, providing a choice of resolution and wavelength coverage. The spectrograph is tunable over the wavelength range 350 to 1000 nm, with resolution R from about 5000 to 20000. This spectrograph is ideally suited for high spatial resolution studies, with a sampled area of the sky 8" x 15", with 0.30" per microlens, in the mode to be used with the tip-tilt correction of SOAR. The project has been approved at the Project Design Review and the spectrograph is presently being constructed.

Paper Details

Date Published: 7 March 2003
PDF: 10 pages
Proc. SPIE 4841, Instrument Design and Performance for Optical/Infrared Ground-based Telescopes, (7 March 2003); doi: 10.1117/12.461977
Show Author Affiliations
Jacques R. D. Lepine, IAG/Univ. de Sao Paulo (Brazil)
Antonio Cesar de Oliveira, Lab. Nacional de Astrofisica/MCT (Brazil)
Milito Vieira Figueredo, IAG/Univ. de Sao Paulo (Brazil)
Bruno Vas Castilho, Lab. Nacional de Astrofisica/MCT (Brazil)
Clemens Gneiding, Lab. Nacional de Astrofisica/MCT (Brazil)
Beatriz Barbuy, IAG/Univ. de Sao Paulo (Brazil)
Damien J. Jones, Prime Optics (Australia)
Antonio Kanaan, Univ. Federal de Santa Catarina (Brazil)
Claudia Mendes de Oliveira, IAG/Univ. de Sao Paulo (Brazil)
C. Strauss, IAG/Univ. de Sao Paulo (Brazil)
Francisco Rodrigues, Lab. Nacional de Astrofisica/MCT (Brazil)
C. R.G. Andrade, Lab. Nacional de Astrofisica/MCT (Brazil)
Ligia Souza de Oliveira, Lab. Nacional de Astrofisica/MCT (Brazil)
J. B. de Oliveira, Lab. Nacilnal de Astrofisica/MCT (Brazil)

Published in SPIE Proceedings Vol. 4841:
Instrument Design and Performance for Optical/Infrared Ground-based Telescopes
Masanori Iye; Alan F. M. Moorwood, Editor(s)

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