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Proceedings Paper

The Dark Energy Spectrometer: a potential multi-fiber instrument for the Blanco 4-meter Telescope
Author(s): J. L. Marshall; Stephen M. Kent; H. Thomas Diehl; Brenna L. Flaugher; Joshua Frieman; Richard G. Kron; D. L. DePoy; Matthew Colless; Will Saunders; Greg A. Smith; Ofer Lahav; Filipe Abdalla; David Brooks; Peter Doel; Donnacha Kirk; James Annis; Huan Lin; John P. Marriner; Stephanie Jouvel; Michael D. Seiffert
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Paper Abstract

We describe the preliminary design of the Dark Energy Spectrometer (DESpec), a fiber-fed spectroscopic instrument concept for the Blanco 4-meter telescope at Cerro Tololo Inter-American Observatory (CTIO). DESpec would take advantage of the infrastructure recently deployed for the Dark Energy Camera (DECam). DESpec would be mounted in the new DECam prime focus cage, would be interchangeable with DECam, would share the DECam optical corrector, and would feature a focal plane with ~4000 robotically positioned optical fibers feeding multiple high-throughput spectrometers. The instrument would have a field of view of 3.8 square degrees, a wavelength range of approximately 500<<1000 nm, and a spectral resolution of R~3000. DESpec would provide a powerful spectroscopic follow-up system for sources in the Southern hemisphere discovered by the Dark Energy Survey and LSST.λ

Paper Details

Date Published: 24 September 2012
PDF: 13 pages
Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 844656 (24 September 2012); doi: 10.1117/12.926451
Show Author Affiliations
J. L. Marshall, Texas A&M Univ. (United States)
Stephen M. Kent, Fermi National Accelerator Lab. (United States)
The Univ. of Chicago (United States)
H. Thomas Diehl, Fermi National Accelerator Lab. (United States)
Brenna L. Flaugher, Fermi National Accelerator Lab. (United States)
Joshua Frieman, Fermi National Accelerator Lab. (United States)
The Univ. of Chicago (United States)
Richard G. Kron, Fermi National Accelerator Lab. (United States)
The Univ. of Chicago (United States)
D. L. DePoy, Texas A&M Univ. (United States)
Matthew Colless, Australian Astronomical Observatory (Australia)
Will Saunders, Australian Astronomical Observatory (Australia)
Greg A. Smith, Australian Astronomical Observatory (Australia)
Ofer Lahav, Univ. College London (United Kingdom)
Filipe Abdalla, Univ. College London (United Kingdom)
David Brooks, Univ. College London (United Kingdom)
Peter Doel, Univ. College London (United Kingdom)
Donnacha Kirk, Univ. College London (United Kingdom)
James Annis, Fermi National Accelerator Lab. (United States)
Huan Lin, Fermi National Accelerator Lab. (United States)
John P. Marriner, Fermi National Accelerator Lab. (United States)
Stephanie Jouvel, Institut de Ciències de l'Espai, CSIC (Spain)
Michael D. Seiffert, Jet Propulsion Lab. (United States)


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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