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Successful Start of Dark Energy Spectroscopic Instrument Follows Record-Setting Trial Run


Date Time
Successful Start of Dark Energy Spectroscopic Instrument Follows Record-Setting Trial Run
The disk of the Andromeda Galaxy (M31), which spans more than 3 degrees, is targeted by a single DESI pointing, represented by the large, pale green, circular overlay. The smaller circles within this overlay represent the regions accessible to each of the 5000 DESI robotic fiber positioners. In this sample, the 5000 spectra that were simultaneously collected by DESI include not only stars within the Andromeda Galaxy, but also distant galaxies and quasars. The example DESI spectrum that overlays this image is of a distant quasar (QSO) 11 billion years old. (Credit: DESI collaboration and DESI Legacy Imaging Surveys) ....

United States , United Kingdom , Mayall Telescope , Kitt Peak National Observatory , Nathalie Palanque Delabrouille , Christophe Yeche , Jim Siegrist , Nicholasu Mayall , Kyle Dawson , Iolkam Duag Kitt , Klaus Honscheid , Telescope At Kitt Peak National Observatory , Ohio State University , University Of Utah , Dark Energy Spectroscopic Instrument , High Energy Physics , National Science Foundation Nsf Noirlab , Office Of Science , Department Of Energyto , National Energy Research Scientific Computing Center , Heising Simons Foundation , National Council Of Science , Atomic Energy Commission , Ministry Of Economy Spain , Berkeley Lab Michael Levi , Betty Moore Foundation ,