Coded Aperture (IMAGE) Duke University Caption The top image shows a typical reading from a mass spectrometer, where each line indicates the presence of a certain substance. The bottom image shows a reading from the new coded aperture, where researchers rely on computers to collapse the numerous lines into a brighter version of the image above. Credit Jeff Glass, Duke University 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.