Stephen Kent

Mostly at:Fermilab
Position: Former Head, Experimental Astrophysics Group
Deputy Head, Scientific Software Infrastructure Dept.
Phone:(630)840-8264
Fax:(630)840-8274
Email:skent-at-fnal.gov
Occasionally at: University of Chicago
Phone:(773)834-4670



Recent images

Solar Eclipse, Aug 21, 2017, near Elkville, IL

70%Totality
Filter: #11 welder's glass Filter: None

Totality is approximately like civil twilight (-6 degrees), except (a) the sun has "set" at every point of the compass; (b) there is this solar corona high in the sky.


Sun "setting" in East Sun "setting" in West


Current Research Projects:


Dark Energy Survey

DES Resources:

Public websites:

  • www.darkenergysurvey.org
  • DES on Facebook
  • Dark Energy Detectives

  • Dark Energy Spectroscopic Instrument

  • desi.lbl.gov Project to build a 5000 fiber spectrograph for the Mayall telescope at Kitt Peak, Arizona

  • LSST (Large Synoptic Survey Telescope)

  • www.lsst.org Public website
  • www.lsst-desc.org LSST Dark Energy Science Collaboration


  • Former Research Project:

    Sloan Digital Sky Survey

    SDSS Resources:

  • www.sdss.org: Public website, a few nuggets of information here, especially under "Collaboration"
  • www.astro.princeton.edu: Project Book - provides much technical information.
  • www.sdss.org/dr7/ : Get the data
  • www.sdss3.org: Next generation SDSS (Note that Fermilab is not a member institution)


  • Observational Foundations of Cosmology

    Some links and essays on the early years of cosmology