NASA has used a unique telescopic photography system to capture amazing images of the shockwaves from fighter jets as they break the sound barrier. The images, shown on this page, were captured by NASA at the Dryden Flight Research Center in California using the Ground-to-Air Schlieren Photography System, or GASPS.
GASPS (which is a wicked name for a photography system, btw) combines telescopes, digital cameras and special image processing software to capture imagery of airflow density. In this case, it was used to record the…
via Imaging Resource News Page http://www.imaging-resource.com/news/2013/09/27/nasa-uses-telescopic-imaging-system-to-photograph-shockwaves-photos