E-THEMIS (IMAGE) Arizona State University Caption Christensen and optical engineer Edgar Madril carry out tests on E-THEMIS to verify the camera's focus and optical quality. Credit Charlie Leight/ASU News Usage Restrictions No restrictions. License Public Domain 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.