SSULI Instrumentation (IMAGE) Naval Research Laboratory Caption The SSULI instrument includes: spectrograph (left), control electronics (lower right) and high voltage power supplies (bottom middle, behind wire harness). Credit Naval Research Laboratory 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.