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Doubling the Number of Known Gravitational Lenses

Doubling the Number of Known Gravitational Lenses
Machine learning key to discovery of over 1200 gravitational lenses
CosmoView Episode 19: Doubling the Number of Known Gravitational Lenses
KPNO/CTIO/NOIRLab/NSF/AURA/Legacy Imaging Survey
Gravitational lenses found in the DESI Legacy Survey data. Examples of gravitational lenses found in the DESI Legacy Survey data.
KPNO/CTIO/NOIRLab/NSF/AURA/Legacy Imaging Survey
Gravitational lens found in the DESI Legacy Survey data. An example of a gravitational lens found in the DESI Legacy Surveys data. The nearly complete circle in the middle of DESI-015.6763-14.0150 is the image of a background galaxy, gravitationally warped (lensed) by the red galaxy at the center into a near-perfect Einstein ring. ....

University Of San Francisco , United States , France General , United Kingdom , Kitt Peak National Observatory , Los Andes , South Korea , University Of Arizona , Mauna Kea , Comunidad Autonoma De Cataluna , Republic Of Korea , Mark Heising , Adam Bolton , Cerro Pach , Verac Rubin , Iolkam Duag Kitt , Arjun Dey , Technische Hochschule , Elizabeth Simons , Nicholasu Mayall , Cerro Tololo , Xiaosheng Huang , David Schlegel , University College London , Southern Methodist University , University Of Queensland ,

Giant map of the sky sets stage for ambitious DESI survey

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VIDEO: This is CosmoView Episode 18 for press release noirlab2103: Giant Map of the Sky Sets Stage for Ambitious DESI Survey
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Credit: Images and Videos:
KPNO/CTIO/NOIRLab/NSF/AURA/Legacy Imaging Survey, P. Marenfeld, D. Munizaga, Lawrence Berkeley National Lab.
Music: Stellardrone - Airglow.
Astronomers using images from Kitt Peak National Observatory and Cerro Tololo Inter-American Observatory have created the largest ever map of the sky, comprising over a billion galaxies. The ninth and final data release from the ambitious DESI Legacy Imaging Surveys sets the stage for a ground-breaking 5-year survey with the Dark Energy Spectroscopic Instrument (DESI), which aims to provide new insights into the nature of dark energy. The map was released today at the January 2021 meeting of the American Astronomical Society. ....

France General , University Of Arizona , United States , Mauna Kea , United Kingdom , Kitt Peak National Observatory , Comunidad Autonoma De Cataluna , Los Andes , South Korea , Mark Heising , Aaron Meisner , Adam Bolton , Cerro Pach , Verac Rubin , Iolkam Duag Kitt , Arjun Dey , Technische Hochschule , Elizabeth Simons , Stephanie Juneau , Amanda Kocz , Nicholasu Mayall , Cerro Tololo , David Schlegel , University College London , Southern Methodist University , University Of Queensland ,

Building a Giant 2D Map of the Universe to Prepare for the Largest 3D Map

Building a Giant 2D Map of the Universe to Prepare for the Largest 3D Map
Nearly 200 researchers pitched in to gather, process, and stitch together images for half of the sky to prepare for the start of the Dark Energy Spectroscopic Instrument’s observations
January 13, 2021
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This video describes the monumental effort that went into constructing a 2D map of the universe to prepare for the Dark Energy Spectroscopic Instrument, which will produce the largest-ever 3D map of the universe. The final data release for the preparation of this 2D map, known as Data Release 9 or DR9, was distributed Jan. 13. (Credit: Marilyn Sargent/Lawrence Berkeley National Laboratory) ....

United States , University Of Arizona , Steward Observatory , Kitt Peak National Observatory , Kitt Peak , Aaron Meisner , Tohono Oodham , Dustin Lang , Iolkam Duag Kitt , Laurie Stephey , Michael Levi , Nathalie Palanque Delabrouille , Arjun Dey , Cerro Tololo , David Schlegel , University Of California , Dark Energy Spectroscopic Instrument , Division Of Astronomical Sciences , National Science Foundation , Us Department Of Energy , Dark Energy Camera Legacy Survey Deca , Perimeter Institute For Theoretical Physics , National Science Foundation Noirlab , Office Of Science , National Astronomical Observatories Of China , Astronomy Research Laboratory Noirlab ,