On Mar 11, 4:56*am, Damon Hill wrote:
"Alan Erskine" wrote in news:C1qBj.24401
:

Was the green glow ionisation caused by speed or was it OMS/thrusters?

OMS and APU exhaust, my guess. *The catalyzsed hydrazine used to drive
the APUs contains unburned ammonia and hydrogen; perhaps it's burning
externally for a while, but not above the lower atmosphere.

I think this is the first video of a totally dark night launch I've
seen, and I can only guess at some of the visible events. *It was
very interesting!

--Damon

Although it seemed the camera settings kept changing . . . there were
a few moments where it almost seemed where you could see in the IR
renage (I suspect there is no real IR in those ET cams) There were a
couple of glowing leading edges on the wings that were quite neat to
see.

John