Subject: Re: 2.5m obslog 20030926 (MJD 52909)
Date: Sat, 27 Sep 2003 18:03:31 -0600 (MDT)
From: ank@apo.nmsu.edu (Atsuko Nitta Kleinman)
Hello,
I have placed on sdsshost a plot of the rotator motor current around the time
of the abort. It looks strange to me.
/home/ank/rotcurrent.ps
is the plot. The current definitly went steeply up before abort.
FYI,
02:00Z Start of hte first SEGUE scan which we eventually stopped due to
       high axis rates.
06:10Z Start of the second SEGUE scan which
       got aborted.
09:15Z abort
The scan following the abort is 82S (southern survey) and the current
is very smooth (probably because the telescaope hardly moves during
this scan). It looks like both SEGUE scan shows the current going up
and down reflecting probably the way the telescope tracks.  The
autoscaling of the archiver www page did not seem to scale correctly so
that we can see the maximum current the rotator hit before aborting.
Anyway, I hope this helps finding out what stopped the rotator.
atsuko