On July 19th 2015 Portland State Aerospace Society launched their "LV2.3" rocket with advanced flight computer to about 5 kilometers above the Central Oregon desert.
This camera was placed on the launch tower to watch our 3D printed, spring loaded umbilical disconnect unplug the rocket at liftoff. Super slowmo view
More information about this launch: https://github.com/psas/Launch-12
And about PSAS: http://psas.pdx.edu/