DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: As-built new Mayall telescope top end for the DESI project

Journal Article · · Proceedings of SPIE - The International Society for Optical Engineering
DOI: https://doi.org/10.1117/12.2312728 · OSTI ID:1460361
ORCiD logo [1];  [1];  [1];  [2];  [3];  [3];  [1];  [1];  [4]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. Space Science Lab. (United States)
  3. Univ. College London (United Kingdom)
  4. Univ. of Michigan, Ann Arbor, MI (United States)

The Dark Energy Spectroscopic Instrument (DESI) is under construction to measure the expansion history of the Universe using the Baryon Acoustic Oscillation technique. The spectra of 35 million galaxies and quasars over 14000 sq deg will be measured during the life of the experiment. A new prime focus corrector for the KPNO Mayall telescope will deliver light to 5000 ber optic positioners. The bers in turn feed ten broad- band spectrographs. We will present an overview of the mechanical structure that sits atop the Mayall Serrurier trusses and supports the six lenses, the Atmospheric Dispersion Compensator (ADC) rotator and the Focal Plane Assembly. Furthermore, this mechanical structure has already been built, we will describe the main technical requirements and challenges during the construction.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
DESI
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1460361
Report Number(s):
FERMILAB-CONF-18-317-E; 1681926; TRN: US1901927
Journal Information:
Proceedings of SPIE - The International Society for Optical Engineering, Vol. 17072; Conference: SPIE Optics + Photonics 2018, San Diego, CA (United States), 19-23 Aug 2018; ISSN 0277-786X
Publisher:
SPIECopyright Statement
Country of Publication:
United States
Language:
English

Figures / Tables (10)


Similar Records

Installation of the Dark Energy Spectroscopic Instrument at the Mayall 4-meter telescope
Conference · 2020 · Proc.SPIE Int.Soc.Opt.Eng. · OSTI ID:1922108

Installation of the Dark Energy Spectroscopic Instrument at the Mayall 4-meter telescope
Journal Article · 2020 · Proceedings of SPIE - The International Society for Optical Engineering · OSTI ID:1787982

Fabrication of the DESI corrector lenses
Journal Article · 2018 · Proceedings of SPIE - The International Society for Optical Engineering · OSTI ID:1469006