ProtoDESI During Assembly (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption This is a view of the ProtoDESI setup during assembly at Berkeley Lab, with the underside of the robotic fiber-positioners visible at left. ProtoDESI is now installed at the 4-meter Mayall Telescope at Kitt Peak National Observatory near Tucson, Ariz. Credit Paul Mueller/Berkeley Lab Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.