Pierre Auger Observatory Upgraded Circuit Board (image) Michigan Technological University Share Print E-Mail Caption David Nitz shows an upgraded surface detector circuit board. Credit Kelley Christensen Usage Restrictions Please credit. Share Print E-Mail 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.