Wechsler and Levi at Mayall (IMAGE) DOE/SLAC National Accelerator Laboratory Caption Former DESI spokesperson Risa Wechsler and DESI Project Director Michael Levi look at the Dark Energy Spectroscopy Instrument as it is being installed on the Mayall Telescope, August 2019. Credit Luis Fernandez 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.