PDS_VERSION_ID        = PDS3
RECORD_TYPE           = STREAM
OBJECT                = TEXT
 PUBLICATION_DATE     = 2007-07-29
 NOTE                 = " E-mail and other messages
                          concerning MGS Radio Science on
                          or about 1999/159."
END_OBJECT            = TEXT
END


From Walter.J.Glance@jpl.nasa.gov Mon May 24 15:18:20 1999
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Date: Mon, 24 May 1999 15:18:06 -0700
To: jensen@msss.com, kcbender@asu.edu
From: Jesse Glance <Walter.J.Glance@jpl.nasa.gov>
Subject: DOY-159 & 160 Proposed MGS Link Test - Potential Change to
 Nominal NIPC Schedule
Cc: tthorpe@mail1.jpl.nasa.gov, ;;;warren@msss.com;, malin@msss.com,
        mehall@asu.edu, elman@elysium.gsfc.nasa.gov,
        dwc@sunspot.ssl.berkeley.edu, jester@osb1.wff.nasa.gov,
        rsimpson@magellan.Stanford.EDU, monte.kaelberer@gsfc.nasa.gov,
        Jeff Schott <schott@tharsis.gsfc.nasa.gov>, homan@asu.edu,
        len@nova.Stanford.EDU, William.B.Banerdt@jpl.nasa.gov,
        john.l.callas@jpl.nasa.gov, Timothy.J.Parker@jpl.nasa.gov,
        trish@rodan.jpl.nasa.gov, rspringe@mail1.jpl.nasa.gov,
        danielw@jplsp2.jpl.nasa.gov, fpalluco@mail1.jpl.nasa.gov
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Status: R

Elsa, Kelly,

As indicated in voice mail message, SCT & TMOD would like to perform
testing to help determine if U/L signal interference is causing
numerous "small quantity packet gaps" in D/L telemetry.

The test involves using two DSS passes as one-way (receive) only,
except the last hour of the second pass will be two-way in order to
accommodate deferred NIPC commanding. =20

NAV Team's need for two-way passes prior to the test, and OTM-2
execution during the pass following the planned test, preclude
performing the test at any other time that week.  Also, since the
activity needs to be sequenced, it can't be conducted any sooner.

----------------------------------------------------------------------------=
-----------

TEST DATES   COMMENTS

----------                      --------

DOY-159,  DSS-65,  1600 - 0115 UTC Configure as D/L Only

DOY-160,  DSS-45,  0455 - 1615 UTC Configure as D/L Only except last
hour (1515 - 1615) enable U/L

----------------------------------------------------------------------------=
-----------

If this is arrangement is unacceptable, please contact myself or Gene
Brower at your earliest convenience,

Thanks,

-- Jesse

<fontfamily><param>Courier_New</param><color><param>181A,072E,B9BE</param>(W=
alter
J. Glance, Jr.)

</color><color><param>0000,0000,FFFF</param>E-Mail:
</color></fontfamily><fontfamily><param>Courier</param><color><param>0453,00=
=467,3BC4</param>Walter.J.Glance@jpl.nasa.gov

</color></fontfamily><fontfamily><param>Courier_New</param><color><param>000=
0,0000,FFFF</param>Phone:
818 393-0630/ Pager: 800 759-8888 pin 1192339/ Fax: 818 393-3147

</color><color><param>04B0,0560,A5FA</param>/
</color></fontfamily><color><param>04B0,0560,A5FA</param><fontfamily><param>=
Courier</param>Text
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</fontfamily></color><fontfamily><param>Courier</param><color><param>0000,00=
00,FFFF</param>1192339</color><color><param>04B0,0560,A5FA</param>@skytel.co=
m

</color></fontfamily>

-----------------------------------------------------------------------

Solar Array Test Procedure

Overview:  The purpose of this test is to bound the TES noise problem by
determining which appendages are the root cause. This test will be performed
during a two-way real time pass in order to collect data for navigation and
gravity team.

Procedure:

Change maximum solar array rate to 0.12 deg/sec to avoid loss of signal
during test.
Stop SAM panel for sixteen (16) minutes.  Eight (8) minutes with HGA and
SAP tracking and eight (8) minutes with only HGA tracking.
Move both SAP and SAM at maximum rate to new positions. SAM is commanded
to autotrack mode and will use maximum rate to catch up. SAP will be
commanded to rate mode and targeted to the autotrack restart position to
limit the power impact. This scheme also limits the maximum rate motion
and therefore the maximum disturbances to one small period of time instead
of two. The autotrack stops and restarts outside of this single period
should be smaller than a typical rewind/autotrack transition because they
only involve a single panel at any given time.
SAP will be stopped by rate mode once the final target is reached, and
will remain stopped for eight (8) minutes.
SAP will resume autotrack. The disturbances should be limited by the
previous targeting to the autotrack restart positions.
Return solar array GDE maximum rates to 0.4 deg/sec.
After solar eclipse entry the VT curve should be reset to VT3 to respond to
possible actions that can be taken by the computer in response to the testing.

Commanding:

1.
T-00:00:30  SCGNLD addr(s): 266b, 2684, 26a7, 26c0; value [4000 0005]
T+00:00:00  SAMACX
T+00:08:00  SAPACX
T+00:16:00  SAPRCE [+30.0, -62.74]; SAMACE
T+00:23:00  SAP reaches target and stops, SAM autotracking
T+00:31:00  SAPACE
T+00:40:00  SCGNLD addr(s): 266b, 2684, 26a7, 26c0; value [6aaa ac06]
T+01:01:11 (Solar Eclipse Entry + 00:10:00) SWVTLS, B1VT3S; SWVTLS, B2VT3S

SAM
SAP
HGA
99-159/13:45:00
99-159/13:53:00
99-159/14:01:00
99-159/14:08:00
AutoTrack
Max. Rate Motion
Stopped
99-159/14:16:00
99-159/14:19:00

--------------------------------------------------------------------------
From trish@godzilla.jpl.nasa.gov Mon Jun  7 15:49:03 1999
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Date: 07 Jun 99 15:53:53 -0700
From: Trish Priest <trish@godzilla.jpl.nasa.gov>
Subject: Solar Array / HGA Motion Test
To: David Hinson <hinson@nimbus.Stanford.EDU>,
        Alexander Konopliv <Alexander.S.Konopliv@jpl.nasa.gov>,
        Frank Lemoine <flemoine@ares.gsfc.nasa.gov>,
        Richard Simpson <rsimpson@magellan.stanford.edu>,
        Bill Sjogren <William.L.Sjogren@jpl.nasa.gov>,
        David Smith <dsmith@ltpsun.gsfc.nasa.gov>,
        Joe Twicken <joe@neptune.Stanford.EDU>,
        Len Tyler <len@nova.Stanford.EDU>,
        "Dah-Ning Yuan" <Dah-Ning.Yuan@jpl.nasa.gov>,
        Maria Zuber <zuber@tharsis.gsfc.nasa.gov>
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Hello,

The solar array / HGA motion test will occur between 159/13:45:00 and
159/14:21:00 UTC (Tuesday morning).  I believe that the times are in
spacecraft time (SCET), but I have to verify that.  I will send a more detailed
timeline tomorrow morning.

OWLT=00:05:43

-Trish

--------------------------------------------------------------------------
From ppriest@airmail.fltops.jpl.nasa.gov Mon Jun  7 18:30:29 1999
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Date: Tue, 8 Jun 1999 01:30:16 GMT
From: "Kathy L. Adams" <ppriest@airmail.fltops.jpl.nasa.gov>
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Orbit:     1109i
SOE:  mm004a.02.tsoe
Begin Record:  158/17:10:00
End Record:  158/17:22:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1110e
SOE:  mm004a.02.tsoe
Begin Record:  158/17:40:00
End Record:  158/17:53:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1110i
SOE:  mm004a.02.tsoe
Begin Record:  158/19:08:00
End Record:  158/19:19:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1111e
SOE:  mm004a.02.tsoe
Begin Record:  158/19:38:00
End Record:  158/19:51:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1111i
SOE:  mm004a.02.tsoe
Begin Record:  158/21:06:00
End Record:  158/21:17:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1112e
SOE:  mm004a.02.tsoe
Begin Record:  158/21:36:00
End Record:  158/21:48:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1112i
SOE: mm004a.02.tsoe
Begin Record:  158/23:03:00
End Record:  158/23:15:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1113e
SOE:  mm004a.02.tsoe
Begin Record:  158/23:33:00
End Record:  158/23:46:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1113i
SOE:  mm004a.02.tsoe
Begin Record:  159/01:01:00
End Record:  159/01:12:00
Last Attenuation Change:
SNT:
Elevation Angle:

--------------------------------------------------------------------------
From ppriest@airmail.fltops.jpl.nasa.gov Mon Jun  7 21:00:43 1999
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Orbit:     1114e
SOE:  mm004a.02.tsoe
Begin Record:  159/01:31:00
End Record:  159/01:44:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1114i
SOE:  mm004a.02.tsoe
Begin Record:  159/02:59:00
End Record:  159/03:10:00
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SNT:
Elevation Angle:

Orbit:  1115e
SOE:  mm004a.02.tsoe
Begin Record:  159/03:29:00
End Record:  159/03:42:00
Last Attenuation Change:
SNT:
Elevation Angle:

--------------------------------------------------------------------------
From ppriest@airmail.fltops.jpl.nasa.gov Tue Jun  8 09:01:02 1999
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Date: Tue, 8 Jun 1999 16:00:13 GMT
From: "Kathy L. Adams" <ppriest@airmail.fltops.jpl.nasa.gov>
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Orbit:     1115i
SOE:  mm004a.02.tsoe
Begin Record:  159/04:50:00
End Record:  159/05:08:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1116e
SOE:  mm004a.02.tsoe
Begin Record:  159/05:26:00
End Record:  159/05:39:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1116i
SOE: mm004a.02.tsoe
Begin Record:  159/06:54:00
End Record:  159/07:06:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1117e
SOE:  mm004a.02.tsoe
Begin Record:  159/07:24:00
End Record:  159/07:37:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1117i
SOE:  mm004a.02.tsoe
Begin Record:  159/08:52:00
End Record:  159/09:03:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1118e
SOE:  mm004a.02.tsoe
Begin Record:  159/09:22:00
End Record:  159/09:35:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1118i
SOE:  mm004a.02.tsoe
Begin Record:  159/10:50:00
End Record:  159/11:01:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1119e
SOE:  mm004a.02.tsoe
Begin Record:  159/11:19:00
End Record:  159/11:32:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1119i
SOE:  mm004a.02.tsoe
Begin Record:  159/12:47:00
End Record:  159/12:59:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1120e
SOE:   mm004a.02.tsoe
Begin Record:  159/13:17:00
End Record:  159/13:30:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1120i
SOE:  mm004a.02.tsoe
Begin Record:  159/14:45:00
End Record:  159/14:56:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1121e
SOE:   mm004a.02.tsoe
Begin Record:  159/15:15:00
End Record:  159/15:28:00
Last Attenuation Change:
SNT:
Elevation Angle:

--------------------------------------------------------------------------
From trish@godzilla.jpl.nasa.gov Tue Jun  8 09:24:48 1999
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Date: 08 Jun 99 09:29:32 -0700
From: Trish Priest <trish@godzilla.jpl.nasa.gov>
Subject: Solar Array / HGA Motion Test Times
To: David Hinson <hinson@nimbus.Stanford.EDU>,
        Alexander Konopliv <Alexander.S.Konopliv@jpl.nasa.gov>,
        Frank Lemoine <flemoine@ares.gsfc.nasa.gov>,
        Richard Simpson <rsimpson@magellan.stanford.edu>,
        Bill Sjogren <William.L.Sjogren@jpl.nasa.gov>,
        David Smith <dsmith@ltpsun.gsfc.nasa.gov>,
        Joe Twicken <joe@neptune.Stanford.EDU>,
        Len Tyler <len@nova.Stanford.EDU>,
        "Dah-Ning Yuan" <Dah-Ning.Yuan@jpl.nasa.gov>,
        Maria Zuber <zuber@tharsis.gsfc.nasa.gov>
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Hello,

The following is the timing for the test.  All times are in SCET.

159/13:45:00  SAM not moving, HGA and SAP autotracking
159/13:53:00  SAM and SAP not moving, HGA autotracking
159/14:01:00  Move SAP and SAM to new positions at max rate.
159/14:13:00  SAP not moving, HGA and SAM autotracking
159/14:21:00  SAP moves to autotrack position and resumes tracking

The DSN station stayed in-lock throughout with no problems.  The AGC
levels did not have any large excursions.

Open-loop data were recorded from 13:32:20 to 14:32:00.

-Trish

--------------------------------------------------------------------------
From trish@godzilla.jpl.nasa.gov Tue Jun  8 16:32:54 1999
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Date: 08 Jun 99 16:37:50 -0700
From: Trish Priest <trish@godzilla.jpl.nasa.gov>
Subject: RE: TES/SA Test
To: "Dick Simpson 723-3525" <rsimpson@magellan.stanford.edu>
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         Reply to:   RE: TES/SA Test
Sorry.

Bill (who is used to this type of data) is faxing some plots.  He still
sees all of the periodicities that he did before.  He thinks that the "new"
mode that he noticed on Friday is about 4.5 or 5 Hz (suprise!).

Maybe fixed-HGA mapping isn't such a bad idea.  ;-)

-Trish

Dick Simpson 723-3525 wrote:
>
>Not only two-way (manageable) but with ramping (this will take a
>little more work).  Bummer.

--------------------------------------------------------------------------
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Date: Wed, 9 Jun 1999 02:00:13 GMT
From: "Kathy L. Adams" <ppriest@airmail.fltops.jpl.nasa.gov>
Message-Id: <199906090200.CAA25997@mmrs.fltops.jpl.nasa.gov>
DSS:  65
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Status: R

Orbit:     1121i
SOE:  mm004a.02.tsoe
Begin Record:  159/16:35:00
End Record:  159/16:54:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1122e
SOE:  mm004a.02.tsoe
Begin Record:  159/17:13:00
End Record: 159/17:25:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1122i
SOE:  mm004a.02.tsoe
Begin Record:  159/18:40:00
End Record:  159/18:52:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1123e
SOE: mm004a.02.tsoe
Begin Record:  159/19:10:00
End Record:  159/19:23:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1123i
SOE:  mm004a.02.tsoe
Begin Record:  159/20:38:00
End Record:  159/20:49:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1124e
SOE:  mm004a.02.tsoe
Begin Record:  159/21:08:00
End Record:  159/21:21:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1124i
SOE:  mm004a.02.tsoe
Begin Record:  159/22:36:00
End Record:  159/22:47:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1125e
SOE:  mm004a.02.tsoe
Begin Record:  159/23:05:00
End Record:  159/23:18:00
Last Attenuation Change:
SNT:
Elevation Angle:

Orbit:  1125i
SOE:  mm004a.02.tsoe
Begin Record:  160/00:33:00
End Record:  160/00:45:00
Last Attenuation Change:
SNT:
Elevation Angle:

--------------------------------------------------------------------------
From trish@godzilla.jpl.nasa.gov Thu Jun 10 16:07:54 1999
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Date: 10 Jun 99 16:12:54 -0700
From: Trish Priest <trish@godzilla.jpl.nasa.gov>
Subject: Extra one-way
To: Joe Twicken <joe@neptune.Stanford.EDU>
CC: David Hinson <hinson@nimbus.Stanford.EDU>,
        Richard Simpson <rsimpson@magellan.stanford.edu>,
        Len Tyler <len@nova.Stanford.EDU>
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Hello, Joe,

I collected extra one-way data from two passes:

DSS 65 159/19:23:30 to 20:36:00
DSS 65 159/23:18:00 to 00:30:00
DSS 45 160/05:11:30 to 06:20:00
DSS 45 160/09:15:00 to 10:15:00
DSS 45 160/13:07:00 to 14:15:00

Some of these were recorded straight through from egress to ingress, and I just changed the attenuation when TLM went on and off.
The first one at DSS 65 and the middle one at DSS45 will have the best elevation angles.

Good luck with your move.

-Trish

--------------------------------------------------------------------------
From joe@nova.stanford.edu Mon Jun 28 16:39:32 1999
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Date: Mon, 28 Jun 1999 16:37:22 -0700 (PDT)
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From: Joe Twicken <joe@nova.stanford.edu>
To: hinson@nova.stanford.edu, rsimpson@nova.stanford.edu,
        joe@nova.stanford.edu
Subject: RE: ODR Notice: /users/z07/procODR/91791710
Content-Length: 3133
Status: RO

(1) It appears that the trajectory reconstruction was not good for the
following two occultation recordings: 91590922.ODR and 91591050.ODR

On 28-Jun-99 Joe Twicken 723-3597 wrote:
> 91590101.ODR p 65XRXIR1R201 65XRXIC1XX01 65XR1IF1S101 65XR1IS1T101
> 65XR1IS1T201 65XR1IS1T301 65XR1IS1T401 65XR1IS1T501
> 91590131.ODR p 24XRXER1R201 24XRXEC1XX01 24XR1EF1S101 24XR1ES1T101
> 24XR1ES1T201 24XR1ES1T301 24XR1ES1T401 24XR1ES1T501
> 91590259.ODR p 24XRXIR1R201 24XRXIC1XX01 24XR1IF1S101 24XR1IS1T101
> 24XR1IS1T201 24XR1IS1T301 24XR1IS1T401 24XR1IS1T501
> 91590329.ODR p 24XRXER1R201 24XRXEC1XX01 24XR1EF1S101 24XR1ES1T101
> 24XR1ES1T201 24XR1ES1T301 24XR1ES1T401 24XR1ES1T501
> 91590450.ODR p 45XRXIR1R201 45XRXIC1XX01 45XR1IF1S101 45XR1IS1T101
> 45XR1IS1T201 45XR1IS1T301 45XR1IS1T401 45XR1IS1T501
> 91590526.ODR p 45XRXER1R201 45XRXEC1XX01 45XR1EF1S101 45XR1ES1T101
> 45XR1ES1T201 45XR1ES1T301 45XR1ES1T401 45XR1ES1T501
> 91590654.ODR p 45XRXIR1R201 45XRXIC1XX01 45XR1IF1S101 45XR1IS1T101
> 45XR1IS1T201 45XR1IS1T301 45XR1IS1T401 45XR1IS1T501
> 91590724.ODR p 45XRXER1R201 45XRXEC1XX01 45XR1EF1S101 45XR1ES1T101
> 45XR1ES1T201 45XR1ES1T301 45XR1ES1T401 45XR1ES1T501
> 91590852.ODR p 45XRXIR1R201 45XRXIC1XX01 45XR1IF1S101 45XR1IS1T101
> 45XR1IS1T201 45XR1IS1T301 45XR1IS1T401 45XR1IS1T501
> 91590922.ODR p 45XRXER1R201 45XRXEC1XX01 45XR1EF1S101 45XR1ES1T101
> 45XR1ES1T201 45XR1ES1T301 45XR1ES1T401 45XR1ES1T501
> 91591050.ODR p 45XRXIR1R201 45XRXIC1XX01 45XR1IF1S101 45XR1IS1T101
> 45XR1IS1T201 45XR1IS1T301 45XR1IS1T401 45XR1IS1T501
> 91591119.ODR p 45XRXER1R201 45XRXEC1XX01 45XR1EF1S101 45XR1ES1T101
> 45XR1ES1T201 45XR1ES1T301 45XR1ES1T401 45XR1ES1T501
> 91591247.ODR p 45XRXIR1R201 45XRXIC1XX01 45XR1IF1S101 45XR1IS1T101
> 45XR1IS1T201 45XR1IS1T301 45XR1IS1T401 45XR1IS1T501
> 91591317.ODR p 45XRXER1R201 45XRXEC1XX01 45XR1EF1S101 45XR1ES1T101
> 45XR1ES1T201 45XR1ES1T301 45XR1ES1T401 45XR1ES1T501
> 91591445.ODR p 45XRXIR1R201 45XRXIC1XX01 45XR1IF1S101 45XR1IS1T101
> 45XR1IS1T201 45XR1IS1T301 45XR1IS1T401 45XR1IS1T501
> 91591515.ODR p 45XRXER1R201 45XRXEC1XX01 45XR1EF1S101 45XR1ES1T101
> 45XR1ES1T201 45XR1ES1T301 45XR1ES1T401 45XR1ES1T501
> 91591635.ODR p 65XRXIR1R201 65XRXIC1XX01 65XR1IF1S101 65XR1IS1T101
> 65XR1IS1T201 65XR1IS1T301 65XR1IS1T401 65XR1IS1T501
> 91591713.ODR p 65XRXER1R201 65XRXEC1XX01 65XR1EF1S101 65XR1ES1T101
> 65XR1ES1T201 65XR1ES1T301 65XR1ES1T401 65XR1ES1T501
> 91591840.ODR p 65XRXIR1R201 65XRXIC1XX01 65XR1IF1S101 65XR1IS1T101
> 65XR1IS1T201 65XR1IS1T301 65XR1IS1T401 65XR1IS1T501
> 91591910.ODR p 65XRXER1R201 65XRXEC1XX01 65XR1EF1S101 65XR1ES1T101
> 65XR1ES1T201 65XR1ES1T301 65XR1ES1T401 65XR1ES1T501
> 91592038.ODR p 65XRXIR1R201 65XRXIC1XX01 65XR1IF1S101 65XR1IS1T101
> 65XR1IS1T201 65XR1IS1T301 65XR1IS1T401 65XR1IS1T501
> 91592108.ODR p 65XRXER1R201 65XRXEC1XX01 65XR1EF1S101 65XR1ES1T101
> 65XR1ES1T201 65XR1ES1T301 65XR1ES1T401 65XR1ES1T501
> 91592236.ODR p 65XRXIR1R201 65XRXIC1XX01 65XR1IF1S101 65XR1IS1T101
> 65XR1IS1T201 65XR1IS1T301 65XR1IS1T401 65XR1IS1T501
> 91592305.ODR p 65XRXER1R201 65XRXEC1XX01 65XR1EF1S101 65XR1ES1T101
> 65XR1ES1T201 65XR1ES1T301 65XR1ES1T401 65XR1ES1T501

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From trish@godzilla.jpl.nasa.gov Wed Jul 14 16:37:25 1999
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Date: 14 Jul 99 16:43:09 -0700
From: Trish Priest <trish@godzilla.jpl.nasa.gov>
Subject: Solar Array Motion
To: Georges Balmino <balmino@pontos.cnes.fr>,
        David Hinson <hinson@nimbus.stanford.edu>,
        Alexander Konopliv <Alexander.S.Konopliv@jpl.nasa.gov>,
        Frank Lemoine <flemoine@ares.gsfc.nasa.gov>,
        Richard Simpson <rsimpson@magellan.stanford.edu>,
        Bill Sjogren <William.L.Sjogren@jpl.nasa.gov>,
        David Smith <dsmith@ltpsun.gsfc.nasa.gov>,
        Joe Twicken <joe@neptune.stanford.edu>,
        Len Tyler <len@nova.stanford.edu>,
        "Dah-Ning Yuan" <Dah-Ning.Yuan@jpl.nasa.gov>,
        Maria Zuber <zuber@tharsis.gsfc.nasa.gov>
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Hello,
It is possible that a decision regarding solar array motion for the remainder of the mission will be made at the meeting tomorrow (Thursday) at 10 AM (Pacific).  (You should have received an e-mail from Jesse Glance. See below.)  TES is requesting that the

The second TES SA test showed that the faster solar array motion will not hurt the gravity data.  (Please correct me if I am wrong.)  However, one of the three periods of motion looks like it is very close to or at ingress.  From the data during this last

TES also found that about 1/3 of the noise that they see is from HGA motion; therefore, they favor periods of fixed-HGA for the second year of mapping.

I decision on this matter may be delayed if significant impacts are brought to light at tomorrow's meeting.  The driver for the decision is that the Spacecraft Team would need to implement the change before they are busy with MCO aerobraking.

Sorry for the short notice.
-Trish

----------------------
>Teleconference:
>
>TES & MOC Results from last Friday's SA Test &
>TES SA Stepping Recommendation
>
>Thursday, July 15
>10:00 am PDT/ 11:00 am MDT
>
>Meet-me  #3-4544
>
>
>This telecon will follow on the heels of the SCT Meeting.
>