This morning the Solar Dynamics Observatory, the first mission of the Living With A Star program, successfully launched this morning. It was a beautiful launch, covered on NASA TV and the SDO web site.
SDO's mission is to chronograph the Sun over the life of the probe, making a detailed record of it's variability, so we may understand more about how the Sun works and how it affects the Earth. SDO runs VxWorks on the flight computer, a radiation-hardened PowerPC RAD750. The science packages are Rad-Hard Coldfire chips running RTEMS.
I managed to come across a blog of a VxWorks developer / space enthusiast who was watching the launch this morning… (reprinted with permission from the original author).
Count is at about t-6:00….
Edit: entering the hold at t-4:00 …
wind looks calm.
Edit: coming out of hold… targeting 10:23 eastcoast
Edit: check offs all go ….
Edit: count resumes in just over one minute…
Edit..: T- 4:00
Edit: BEAUTIFUL LAUNCH!!
Edit: First stage separation: complete… running graphics now… (out of camera range)
Edit: Fairing ejected.. flight still nominal
Edit: entered BBQ attitude – 4degree roll to even out solar heating
Edit: Roll completed
edit: 2:00 left in the centaur burn
Edit: coast phase entered.
We are launched!!
Edit: replays are available at NASA-TV link above or here: