Sloan Digital Sky Survey

The Sloan Digital Sky Survey-V (SDSS-V) is the first facility providing multi-epoch optical & IR spectroscopy across the entire sky, as well as offering contiguous integral-field spectroscopic coverage of the Milky Way and Local Volume galaxies.

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An all-sky map of half a million supermassive black holes

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The Black Hole Mapper reaches a milestone with its first southern hemisphere optical observations, coordinated eROSITA X-ray identification, and multi-epoch tracking of accreting black holes across the universe.