Harold C. Simmons Dark Energy Optical System (mock-up)

This montage shows a mock-up of the new top end for the Hobby-Eberly Telescope (HET), including the Harold C. Simmons Dark Energy Optical System, under construction at The University of Texas at Austin's Center for Electromechanics. Once completed, it will travel to McDonald Observatory to be mounted atop the HET in preparation for the HET Dark Energy Project. Credit: Univ. of Texas/Center for Electromechanics