Infrared Astronomy Credit Hours: 3 hours. With the advent of infrared (IR) arrays, large optical/IR ground telescopes, and several IR satellite missions, IR astronomy has undergone a 21st-century revolution. In this course, students learn fundamental concepts of IR astronomy, various important IR astronomical sources, IR astronomical technologies, and observational techniques. Not offered on a regular basis. Prerequisites: ASTR 1110 and ASTR 1120 and ASTR 3010 and ASTR 4010/6010 Level: Graduate