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Title: The DESI Wide Field Corrector Optics

The Dark Energy Spectroscopic instrument (DESI) is a 5000 fiber multi-object spectrometer system under development for installation on the National Optical Astronomy Observatory (NOAO) Kitt Peak 4m telescope (the Mayall telescope). DESI is designated to perform a 14,000° (square) galaxy and Quasi-Stellar Object (QSO) redshift survey to improve estimates of the dark energy equation of state. The survey design imposes numerous constraints on a prime focus corrector design, including field of view, geometrical blur, stability, fiber injection efficiency, zenith angle, mass and coast. The DESI baseline wide-field optical design described herein provides a 3.2 diameter field of view with six 0.8-1.14m diameter lenses and an integral atmospheric dispersion compensator.
Authors:
 [1] ;  [2] ;  [3] ;  [1] ;  [4] ;  [4] ;  [4] ;  [2] ;  [2] ;  [3]
  1. Univ. College London, London (United Kingdom). Dept. of Physics and Astronomy
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. National Optical Astronomy Observatory, Tucson, AZ (United States)
  4. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Publication Date:
OSTI Identifier:
1258779
Report Number(s):
FERMILAB-CONF--14-581-CD
1469167
DOE Contract Number:
AC02-07CH11359
Resource Type:
Conference
Resource Relation:
Conference: SPIE Astronomical Telescopes and Instrumentation, Montréal, QC (Canada), 22-27 Jun 2014
Research Org:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY