The top of the initial vapor cloud is still visible. The shuttle is now high enough to catch the first orange glow of sunrise Higher into sunrise. At this point the sound of the blastoff hits us. It is a continuous rolling thunder that keeps building. On the left you can now see the shadow in the sky cast by the vapor trail.
Discovery is now high enough that the roar of the engines has faded.
The booster rockets have just separated from the orbiter. For information on how to get a NASA pass to the shuttle launch observation area, see NASA's Viewing Launches and Landings page.