Working on the Harold C. Simmons Dark Energy Optical System

Lee with Simmons System

Research Associate Hanshin Lee works on the Harold C. Simmons Dark Energy Optical System before it is placed atop the Hobby-Eberly Telescope. The 2-ton Simmons System is 5 meters tall, and contains four precisely alligned mirrors (three 1-meter mirrors and one 0.25-meter mirror). (Hanshin Lee/McDonald Observatory)