Astrophysics (Index)About

Dark Energy Spectroscopic Instrument

(DESI, MS-DESI, MSDESI, Mid-scale Dark Energy Spectroscopic Instrument)
(new instrument for measuring red-shift of distant objects)

The Dark Energy Spectroscopic Instrument (DESI) is a multi-object spectrograph intended to measure redshifts of luminous red galaxies, quasars, emission line galaxies, and Lyman-alpha QSOs, to create a 3D cosmological map for dark energy research. It includes 5000 fibers placed automatically using robotics. It is installed on the Mayall 4m Telescope at Kitt Peak National Observatory (KPNO), undergoing final adjustment and testing with hopes of beginning its five-year survey before the end of 2020.


(instrument,cosmology,dark energy,spectrograph,construction)
Further reading:
http://en.wikipedia.org/wiki/Dark_Energy_Spectroscopic_Instrument
http://desi.lbl.gov/
http://arxiv.org/abs/1308.0847
https://lorca.sciencesconf.org/data/program/2018_09_20_spectroDESI_LORCA.pdf
https://arxiv.org/abs/1611.00036
WaveLFreqPhoton
Energy
  
.4μm750THz3.1eVbeginDark Energy Spectroscopic Instrument
1μm300THz1.3eVendDark Energy Spectroscopic Instrument

Referenced by pages:
fiber positioner

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