Gary Hill & Phillip MacQueen with the Mitchell Spectrograph

Instrument-building astronomers Gary Hill (left) and Phillip MacQueen pose with

Instrument-building astronomers Gary Hill (left) and Phillip MacQueen pose with  the Mitchell Spectrograph, which is mounted on the Harlan J. Smith Telescope at McDonald Observatory. Formerly known as VIRUS-P, the Mitchell Spectrograph is the prototype for the VIRUS instrument that will be created for the Hobby-Eberly Telescope (HET) to carry out the HET Dark Energy Experiment (HETDEX). Credit: Marty Harris/McDonald Obs./UT-Austin