The following are e-mail messages regarding the operation
of the XXX detector.
Most recent messages are at the top. Older messages are down below.
Date: Mon, 18 Nov 1996 12:09:23 -0700 (MST)
From: "Michael G. Henderson" <mgh@nis.lanl.gov>
To: joe_fennell@qmail2.aero.org
CC: spence@bu.edu, reeves@lanl.gov
Subject: IPS sector problem
You may get multiple copies of this... sorry...
Joe, Harlan;
>We shifted the IPS offset to try to center the sun response so it
fell only in
>sectors 31 and zero. I am surprised to hear the IPS_sun_offset is reporting
>zero. Unless we accidently reset it or the Lo software isn't handling
it
>properly, it should indicate that the sun occurs 5 deg before sector
0. This 5
What do you mean exactly by "5 deg before sector 0"? Do you
define
sector zero to be the center of sector zero? If you did this
adjustment empirically, (i.e. fiddle with the offset until the data
shows that the sun is between 31 and 0), then did you take into
account that the peak response for a given sector will lie
on its uppermost boundary (not at its center) as Harlan claims?
If the peak in repsonse is actually at the upper boundary of each
sector then the sun ought to occur 5.625 degs before the peak in
response. But doesnt this then means that the sun will occur about 5.625
degs
after the *start* of the accumulation for sector zero?
I guess this is kind of difficult to explain via email. I will send you
both a FAX with some drawings to help explain what I am getting at....
Cheers,
Mike
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