The DESI Wide Field Corrector Optics

Conference · Wed Jan 01 00:00:00 EST 2014

DOI:https://doi.org/10.1117/12.2057172· OSTI ID:1258779

Doel, Peter ^[1]; Sholl, Michael J. ^[2]; Liang, Ming ^[3]; Brooks, David ^[1]; Flaugher, Brenna ^[4]; Gutierrez, Gaston ^[4]; Kent, Stephen ^[4]; Lampton, Michael ^[2]; Miller, Timothy ^[2]; Sprayberry, David ^[3]

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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)

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.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1258779
• Report Number(s): FERMILAB-CONF-14-581-CD; 1469167
• Resource Relation: Conference: SPIE Astronomical Telescopes and Instrumentation, Montréal, QC (Canada), 22-27 Jun 2014
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY