Re: STS-93 Night Launch Observation

Mike (asterism@att.net)
Fri, 23 Jul 1999 11:55:06 -0400

Also had a good view from just west of Ocala. Wife and I were able to hear
the launch 9 minutes after blast off. Echos continued for the next 4
minutes. Friends in Gainesville heard it quite well, too. The air was very
moist... I suppose that helped.

--Mike


----- Original Message -----
From: <Stephmon@aol.com>
To: <SeeSat-L@blackadder.lmsal.com>
Sent: Friday, July 23, 1999 9:56 AM
Subject: STS-93 Night Launch Observation


> I just watched Columbia's night launch from my backyard in Orlando (I
realize
> the ambiguity of that statement, but rest assured, the -launch- was from
KSC
> ;)). The orange tail from the solid rocket boosters was clearly visible
from
> ~10 degrees above local horizon to ~25 degrees when the glow gradually
> changed to blue/white. At separation, the SRB's appeared as two dim red
spots
> (much like automobile tail lights) forming a (roughly) isosceles triangle
> with the main engines. The SRB glow faded out for a few seconds (tumble?)
> before reappearing and finally fading out. The white glow of the main
engines
> gradually appeared to shrink and descend towards ~20 degrees.
Unfortunately,
> the humid night caused the diminishing 'star' to fade out ~40 seconds
before
> Main Engine Cut Off (MECO).
>
> STS-93 was launched 7 minutes later than the nominal 04:24:00 at 04:31:00.
>
> STS-93
> 1 25866U 99040A   99204.33501948  .00023497  23052-8  46853-4 0    26
> 2 25866  28.4652 197.6680 0016574 248.1106 309.6587 15.98306009    30
>
> Here's looking forward to observations of STS-93 and Chandra (the largest
> object delivered by STS so far).
>
> Godspeed Columbia
> __________________
> Stephen
> http://stephen.fathom.org
>