The DESI Wide Field Corrector Optics
- Univ. College London, London (United Kingdom). Dept. of Physics and Astronomy
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- National Optical Astronomy Observatory, Tucson, AZ (United States)
- 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 Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1258779
- Report Number(s):
- FERMILAB-CONF--14-581-CD; 1469167
- Country of Publication:
- United States
- Language:
- English
Similar Records
The DESI Experiment Part II: Instrument Design
The DESI instrument control systems: status and early testing