S93-E-5031 (23 July 1999) --- Astronaut Eileen M. Collins, mission commander,
looks over a procedures checklist at the
commander's station on the forward flight deck of the Space Shuttle Columbia on Flight Day 1. The most
important event of this day was the
deployment of the Chandra X-Ray Observatory, the world's most powerful
X-Ray telescope. The photo was recorded with an electronic still camera (ESC).