by: Victoria Fawcett, Durham University July 22, 2021 As the main DESI survey gets truly underway, I want to reflect on the amazing quality of the DESI quasar spectra observed so far. Quasars are incredibly luminous types of Active Galactic Nuclei (AGN), which consist of a supermassive black hole at the centre of galaxies, surrounded […]
The Dark Energy Spectroscopic Instrument (DESI)The Dark Energy Spectroscopic Instrument (DESI) will measure the effect of dark energy on the expansion of the universe. It will obtain optical spectra for tens of millions of galaxies and quasars, constructing a 3D map spanning the nearby universe to 11 billion light years.
The DESI Survey is being conducted on the Mayall 4-meter telescope at Kitt Peak National Observatory. DESI is supported by the Department of Energy Office of Science to perform this Stage IV dark energy measurement using baryon acoustic oscillations and other techniques that rely on spectroscopic measurements.
"Successful launch of Dark Energy Spectroscopic Instrument (DESI) Follows Record-Setting Test Phase.
Five-year international collaboration, under the aegis of Berkeley Lab, aims for 3D map of the universe, unraveling of mysterious dark energy"See the Press Release and related blog posts
by: David Schlegel, DESI Project Scientist July 22, 2021 Only eight weeks into DESI’s five-year mission, a 3-dimensional map of the universe is starting to take shape. Plotted below is a “pie diagram” slice through the universe, with earth in the lower left, looking out in the directions of the constellations Virgo, Serpens and Hercules […]
The DESI Legacy Imaging Surveys team is pleased to announce the public release of the Siena Galaxy Atlas 2020 (SGA-2020), a value-added supplemental catalog to imaging Data Release 9 (DR9). The SGA-2020 is a multiwavelength atlas of 383,620 nearby galaxies selected over the 20,000 square-degree imaging footprint based on their (large) apparent angular diameter. It has […]
Successful Start of Dark Energy Spectroscopic Instrument (DESI) Follows Record-Setting Trial Run
– Lawrence Berkeley National Laboratory, 5/17/2020
– Lawrence Berkeley National Laboratory, 6/1/2020
DESI Opens Its 5,000 Eyes to Capture the Colors of the Cosmos
– Lawrence Berkeley National Laboratory, 10/28/2019
Dark Energy Instrument’s Lenses See the Night Sky for the First Time
– Lawrence Berkeley National Laboratory, 4/3/2019