First Data from the DESI Spectrograph
Abstract
The Dark Energy Spectroscopic Instrument (DESI) survey will measure the expansion history and dark energy content of the universe and place exciting new constraints on modified theories of gravity by measuring precise redshifts for approximately 35 million galaxies and quasars at 0 < z < 4. The 5000-fiber instrument was commissioned in Fall 2019 and Survey Validation activities are already under way, laying the groundwork for the 5-year DESI survey to begin in mid-2020. In this contribution we present the algorithmic and processing innovations of the DESI data-reduction and redshift-fitting pipeline, and highlight some of the initial DESI spectroscopy of faint extragalactic targets.
- Publication:
-
American Astronomical Society Meeting Abstracts #235
- Pub Date:
- January 2020
- Bibcode:
- 2020AAS...23544607M