description David Schlegel Overview
David Schlegel is an American astrophysicist and senior scientist at Lawrence Berkeley National Laboratory. He is known for work on large-scale galaxy redshift surveys, including leadership in the Sloan Digital Sky Survey's mapping of galaxy distributions, and for co-authoring the Schlegel, Finkbeiner, and Davis full-sky map of Galactic dust emission and reddening. His research supports measurements of cosmic structure and the correction of interstellar-extinction effects in astronomical data.
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What is David Schlegel known for in astronomy?
He is a leader in large galaxy redshift surveys at Lawrence Berkeley National Laboratory, notably the Sloan Digital Sky Survey's mapping of galaxy distributions, including the BOSS program. He also co-authored the widely used Schlegel–Finkbeiner–Davis (1998) maps of Galactic dust.
What is the SFD dust map that Schlegel co-authored?
It is the 1998 all-sky dust-reddening map by Schlegel, Finkbeiner, and Davis, derived from infrared dust emission. Astronomers still routinely use it to correct observations for Milky Way dust.
Is David Schlegel involved in DESI?
Yes — he has served as a project scientist for the Dark Energy Spectroscopic Instrument (DESI), which is measuring galaxies and quasars from Kitt Peak, Arizona. It extends the kind of large-scale survey work he led with SDSS/BOSS at Berkeley Lab.
Where does David Schlegel work?
He is a senior scientist at Lawrence Berkeley National Laboratory in Berkeley, California. His group designs instruments and analyzes how galaxies cluster across enormous volumes of the universe.
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