Map of the 20 All-sky Imagers Used in Support of the THEMIS Mission (image) NASA/Goddard Space Flight Center Share Print E-Mail Caption This is a locations and field of view map of the twenty all-sky imagers used in support of the THEMIS mission. Twenty all-sky imagers (ASIs) were deployed by researchers from the University of California Berkeley, the University of Calgary, and the University of Alaska in support of the THEMIS mission. Credit THEMIS/UC Berkeley Usage Restrictions None 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.