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Proceedings Paper

Planning the installation of the dark energy spectroscopic instrument on the Mayall Telescope
Author(s): D. Sprayberry; W. Goble; L. Allen; J. Elias; R. Probst; R. Joyce; A. Dey; R. Marshall; M. Evatt; R. Blum; T. M. C. Abbott; A. Walker; F. Muñoz ; R. Besuner; M. Sholl; P. Jelinsky; J. Silber; R. Lafever; C. Bebek; B. Flaugher
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Paper Abstract

The KPNO Nicholas U. Mayall 4-meter telescope is to be the host facility for the Dark Energy Spectroscopic Instrument (DESI). DESI will record broadband spectra simultaneously for 5000 objects distributed over a 3-degree diameter field of view; it will record the spectra of approximately 20 million galaxies and quasi-stellar objects during a five-year survey. This survey will improve the combined precision of measurement on the dark energy equation of state today (w0) and its evolution with redshift (wa) by approximately a factor of ten over existing spectroscopy baryon acoustic oscillation surveys (e.g., BOSS1) in both co-moving volume surveyed and number of galaxies mapped. Installation of DESI on the telescope is a complex procedure, involving a complete replacement of the telescope top end, routing of massive fiber cables, and installation of banks of spectrographs in an environmentally-controlled lab area within the dome. Furthermore, assembly of the instrument and major subsystems must be carried out on-site given their size and complexity. A detailed installation plan is being developed early in the project in order to ensure that DESI and its subsystems are designed so they can be safely and efficiently installed, and to ensure that all telescope and facility modifications required to enable installation are identified and completed in time.

Paper Details

Date Published: 22 July 2014
PDF: 12 pages
Proc. SPIE 9145, Ground-based and Airborne Telescopes V, 91453Y (22 July 2014); doi: 10.1117/12.2055625
Show Author Affiliations
D. Sprayberry, National Optical Astronomy Observatory (United States)
W. Goble, MMT Observatory, Univ. of Arizona (United States)
L. Allen, National Optical Astronomy Observatory (United States)
J. Elias, National Optical Astronomy Observatory (United States)
R. Probst, National Optical Astronomy Observatory (United States)
R. Joyce, National Optical Astronomy Observatory (United States)
A. Dey, National Optical Astronomy Observatory (United States)
R. Marshall, National Optical Astronomy Observatory (United States)
M. Evatt, National Optical Astronomy Observatory (United States)
R. Blum, National Optical Astronomy Observatory (United States)
T. M. C. Abbott, National Optical Astronomy Observatory (Chile)
A. Walker, National Optical Astronomy Observatory (United States)
F. Muñoz , National Optical Astronomy Observatory (Chile)
R. Besuner, Space Science Lab., Univ. of California, Berkeley (United States)
M. Sholl, Google, Inc. (United States)
P. Jelinsky, Space Science Lab., Univ. of California, Berkeley (United States)
J. Silber, Space Science Lab., Univ. of California, Berkeley (United States)
R. Lafever, Lawrence Berkeley National Lab. (United States)
C. Bebek, Lawrence Berkeley National Lab. (United States)
B. Flaugher, Fermi National Accelerator Lab. (United States)


Published in SPIE Proceedings Vol. 9145:
Ground-based and Airborne Telescopes V
Larry M. Stepp; Roberto Gilmozzi; Helen J. Hall, Editor(s)

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