Members of the Fermilab team stand with the lens-holding barrel for the Dark Energy Spectroscopic Instrument. From left: Jorge Montes, Mike Roman, David Butler, Gaston Gutierrez, Giuseppe Gallo and Otto Alvarez. Photo: Reidar Hahn
February 12, 2018
Members of the Fermilab team stand with the lens-holding barrel for the Dark Energy Spectroscopic Instrument. From left: Jorge Montes, Mike Roman, David Butler, Gaston Gutierrez, Giuseppe Gallo and Otto Alvarez. Photo: Reidar Hahn