PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2007-07-31 NOTE = " E-mail and other messages concerning MGS Radio Science on or about 2006/032." END_OBJECT = TEXT END From aseel@airmail.fltops.jpl.nasa.gov Wed Feb 1 10:07:02 2006 Received: from leland3.Stanford.EDU (leland3.Stanford.EDU [171.67.16.108]) by magellan.stanford.edu (8.11.7p1+Sun/8.11.7) with ESMTP id k11I72F10619 for ; Wed, 1 Feb 2006 10:07:02 -0800 (PST) Received: from airmail.fltops.jpl.nasa.gov (airmail2.fltops.jpl.nasa.gov [137.228.96.27]) by leland3.Stanford.EDU (8.12.11/8.12.11) with ESMTP id k11I71vf013889; Wed, 1 Feb 2006 10:07:01 -0800 Received: from rsops2.fltops.jpl.nasa.gov (rsops2.fltops.jpl.nasa.gov [137.228.136.22]) by airmail.fltops.jpl.nasa.gov (Postfix) with ESMTP id E4C551090F; Wed, 1 Feb 2006 10:16:48 -0800 (PST) Received: from rsops2.fltops.jpl.nasa.gov (localhost [127.0.0.1]) by rsops2.fltops.jpl.nasa.gov (8.12.10+Sun/8.12.8) with ESMTP id k11I71PC025805; Wed, 1 Feb 2006 18:07:01 GMT Received: (from aseel@localhost) by rsops2.fltops.jpl.nasa.gov (8.12.10+Sun/8.12.8/Submit) id k11I71Yo025804; Wed, 1 Feb 2006 18:07:01 GMT Date: Wed, 1 Feb 2006 18:07:01 GMT From: aseel anabtawi Message-Id: <200602011807.k11I71Yo025804@rsops2.fltops.jpl.nasa.gov> Content-Type: text To: undisclosed-recipients:; DSS: 14 RSR: RSR1A Subchannel: 1 Orbit Number: 30840 Occultation Sense: e SOE: mm468b.32.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2006/032-01:39:00 End Record: 2006/032-01:50:00 DSS: 14 RSR: RSR1A Subchannel: 1 Orbit Number: 30841 Occultation Sense: e SOE: mm468b.32.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2006/032-03:37:00 End Record: 2006/032-03:48:00 DSS: 14 RSR: RSR1A Subchannel: 1 Orbit Number: 30842 Occultation Sense: e SOE: mm468b.32.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2006/032-05:35:00 End Record: 2006/032-05:46:00 DSS: 14 RSR: RSR1A Subchannel: 1 Orbit Number: 30843 Occultation Sense: e SOE: mm468b.32.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2006/032-07:32:00 End Record: 2006/032-07:44:00 -------------------------------------------------------------------------- From aseel@airmail.fltops.jpl.nasa.gov Thu Feb 2 09:57:10 2006 Received: from leland2.Stanford.EDU (leland2.Stanford.EDU [171.67.16.93]) by magellan.stanford.edu (8.11.7p1+Sun/8.11.7) with ESMTP id k12HvAF17253 for ; Thu, 2 Feb 2006 09:57:10 -0800 (PST) Received: from airmail.fltops.jpl.nasa.gov (airmail2.fltops.jpl.nasa.gov [137.228.96.27]) by leland2.Stanford.EDU (8.12.11/8.12.11) with ESMTP id k12Hv7pQ000796; Thu, 2 Feb 2006 09:57:07 -0800 Received: from rsops2.fltops.jpl.nasa.gov (rsops2.fltops.jpl.nasa.gov [137.228.136.22]) by airmail.fltops.jpl.nasa.gov (Postfix) with ESMTP id 05FAE1090C; Thu, 2 Feb 2006 10:06:51 -0800 (PST) Received: from rsops2.fltops.jpl.nasa.gov (localhost [127.0.0.1]) by rsops2.fltops.jpl.nasa.gov (8.12.10+Sun/8.12.8) with ESMTP id k12Hv2PC026229; Thu, 2 Feb 2006 17:57:02 GMT Received: (from aseel@localhost) by rsops2.fltops.jpl.nasa.gov (8.12.10+Sun/8.12.8/Submit) id k12Hv1qR026228; Thu, 2 Feb 2006 17:57:01 GMT Date: Thu, 2 Feb 2006 17:57:01 GMT From: aseel anabtawi Message-Id: <200602021757.k12Hv1qR026228@rsops2.fltops.jpl.nasa.gov> Content-Type: text To: undisclosed-recipients:; DSS: 55 RSR: RSR1A Subchannel: 1 Orbit Number: 30846 Occultation Sense: e SOE: mm468b.32.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2006/032-13:26:00 End Record: 2006/032-13:37:00 DSS: 55 RSR: RSR1A Subchannel: 1 Orbit Number: 30847 Occultation Sense: e SOE: mm468b.32.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2006/032-15:24:00 End Record: 2006/032-15:35:00 DSS: 55 RSR: RSR1A Subchannel: 1 Orbit Number: 30848 Occultation Sense: e SOE: mm468b.32.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2006/032-17:21:00 End Record: 2006/032-17:32:00 DSS: 55 RSR: RSR1A Subchannel: 1 Orbit Number: 30849 Occultation Sense: e SOE: mm468b.32.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2006/032-19:19:00 End Record: 2006/032-19:30:00 DSS: 55 RSR: RSR1A Subchannel: 1 Orbit Number: 30850 Occultation Sense: e SOE: mm468b.32.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2006/032-21:17:00 End Record: 2006/032-21:28:00 DSS: 55 RSR: RSR1A Subchannel: 1 Orbit Number: 30851 Occultation Sense: e SOE: mm468b.32.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2006/032-23:15:00 End Record: 2006/032-23:26:00 -------------------------------------------------------------------------- From aseel@airmail.fltops.jpl.nasa.gov Fri Feb 3 12:10:04 2006 Received: from leland.Stanford.EDU (leland.Stanford.EDU [171.67.16.29]) by magellan.stanford.edu (8.11.7p1+Sun/8.11.7) with ESMTP id k13KA4F04085 for ; Fri, 3 Feb 2006 12:10:04 -0800 (PST) Received: from airmail.fltops.jpl.nasa.gov (airmail2.fltops.jpl.nasa.gov [137.228.96.27]) by leland.Stanford.EDU (8.12.11/8.12.11) with ESMTP id k13KA2iW002179; Fri, 3 Feb 2006 12:10:02 -0800 Received: from rsops2.fltops.jpl.nasa.gov (rsops2.fltops.jpl.nasa.gov [137.228.136.22]) by airmail.fltops.jpl.nasa.gov (Postfix) with ESMTP id 2B3B61090B; Fri, 3 Feb 2006 12:19:52 -0800 (PST) Received: from rsops2.fltops.jpl.nasa.gov (localhost [127.0.0.1]) by rsops2.fltops.jpl.nasa.gov (8.12.10+Sun/8.12.8) with ESMTP id k13KA1PC026823; Fri, 3 Feb 2006 20:10:01 GMT Received: (from aseel@localhost) by rsops2.fltops.jpl.nasa.gov (8.12.10+Sun/8.12.8/Submit) id k13KA1Ug026822; Fri, 3 Feb 2006 20:10:01 GMT Date: Fri, 3 Feb 2006 20:10:01 GMT From: aseel anabtawi Message-Id: <200602032010.k13KA1Ug026822@rsops2.fltops.jpl.nasa.gov> Content-Type: text To: undisclosed-recipients:; DSS: 26 RSR: RSR1A Subchannel: 1 Orbit Number: 30851 Occultation Sense: e SOE: mm468b.45.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2006/032-23:15:00 End Record: 2006/032-23:26:00 DSS: 26 RSR: RSR1A Subchannel: 1 Orbit Number: 30852 Occultation Sense: e SOE: mm468b.45.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2006/033-01:12:00 End Record: 2006/033-01:23:00 DSS: 26 RSR: RSR1A Subchannel: 1 Orbit Number: 30853 Occultation Sense: e SOE: mm468b.45.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2006/033-03:10:00 End Record: 2006/033-03:21:00 DSS: 26 RSR: RSR1A Subchannel: 1 Orbit Number: 30854 Occultation Sense: e SOE: mm468b.45.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2006/033-05:08:00 End Record: 2006/033-05:19:00 DSS: 26 RSR: RSR1A Subchannel: 1 Orbit Number: 30855 Occultation Sense: e SOE: mm468b.45.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2006/033-07:05:00 End Record: 2006/033-07:17:00 -------------------------------------------------------------------------- Return-Path: Received: from pobox02.stanford.edu ([unix socket]) by pobox02.stanford.edu (Cyrus v2.2.12) with LMTPA; Thu, 02 Feb 2006 12:48:47 -0800 X-Sieve: CMU Sieve 2.2 Received: from smtp3.Stanford.EDU (smtp3.Stanford.EDU [171.67.16.138]) by pobox02.stanford.edu (Postfix) with ESMTP id 0558A8EB8041 for ; Thu, 2 Feb 2006 12:48:47 -0800 (PST) Received: from magellan.stanford.edu (magellan.Stanford.EDU [171.64.90.216]) by smtp3.Stanford.EDU (8.12.11/8.12.11) with ESMTP id k12KmScT011667; Thu, 2 Feb 2006 12:48:28 -0800 Received: (from rsimpson@localhost) by magellan.stanford.edu (8.11.7p1+Sun/8.11.7) id k12KmSN22525; Thu, 2 Feb 2006 12:48:28 -0800 (PST) Date: Thu, 2 Feb 2006 12:48:28 -0800 (PST) From: Dick Simpson 650-723-3525 Message-Id: <200602022048.k12KmSN22525@magellan.stanford.edu> To: dale.k.howell@lmco.com Subject: RE: RE: Re: Radio Science Ingress Cc: dhinson@stanford.edu, jtwicken@stanford.edu, rsimpson@magellan.stanford.edu, william.r.adams@lmco.com > ... only take the antenna 20 seconds to get on target, so I should have 1 >minute of pad. Seems like that ought to be enough, maybe not? > >How much pad do we need, and I do mean NEED. If we pad this too much >the momentum control is going to suffer because we have such short >occultation times for the next few months. Dale: Were you expecting a reply from Stanford on this? I didn't think so, but Joe Twicken thought maybe yes. I'm not familiar enough with the sequencing business to offer anything intelligent. Dave Hinson reviewed Joe's geometry calculations and concluded that the occultations today are lasting about 24 minutes and are occurring at about 24 deg S latitude. So these are valuable data for radio science if we can get the HGA on Earth point before egress. Since we (MGS RS) have already sacrificed ingress, this would appear to be easy from our point of view; but you obviously have other, competing concerns that must be factored in. In March-April, when the occultation duration becomes less and the geometry even more grazing, the analysis and interpretation of the radio data becomes more difficult. But we're not ready to give up in early February. For your information, all nine of the most recent occultations have the HGA rewind on top of egress (see below). Regards, Dick - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - From today's MGS RST health report: DSN Occ # Start Notes === ====== ============== ============================================== 63 30835e 2006/031 15:51 Sidelobe at egress 63 30836e 2006/031 17:48 Sidelobe at egress 63 30837e 2006/031 19:46 Sidelobe at egress 63 30838e 2006/031 21:44 Sidelobe at egress 63 30839e 2006/031 23:42 Sidelobe at egress 14 30840e 2006/032 01:39 Sidelobe at egress 14 30841e 2006/032 03:37 Sidelobe at egress 14 30842e 2006/032 05:35 Sidelobe at egress 14 30843e 2006/032 07:32 Sidelobe at egress One or two sidelobes continue to be visible in the carrier level transition at egress. The HGA rewind is apparently incomplete at surface egress, and the HGA is not yet on Earth point at that time. These recordings are lost to science. -------------------------------------------------------------------------- Received: (from rsimpson@localhost) by magellan.stanford.edu (8.11.7p1+Sun/8.11.7) id k12Lkcp25019; Thu, 2 Feb 2006 13:46:38 -0800 (PST) Date: Thu, 2 Feb 2006 13:46:38 -0800 (PST) From: Dick Simpson 650-723-3525 Message-Id: <200602022146.k12Lkcp25019@magellan.stanford.edu> To: dale.k.howell@lmco.com Subject: RE: RE: Re: Radio Science Ingress Cc: dhinson@stanford.edu, jteicken@stanford.edu, rsimpson MIME-Version: 1.0 >I put in a CCR today to move us away from egress. I'm going to try to >stay further away from egress to protect the radio science. Can you >identify a time frame where it went from good to bad, that will help me >make sure I have enough pad to keep the data good. After the update on 2006/024 it was good until 2006/030 06:29. From then until 2006/030 18:15 it was in transition. Since 2006/030 20:13 it has been uniformly bad (until the last time we looked, which was 2006/032 07:32). Thanks, Dick -------------------------------------------------------------------------- Return-Path: Received: from pobox02.stanford.edu ([unix socket]) by pobox02.stanford.edu (Cyrus v2.2.12) with LMTPA; Mon, 06 Feb 2006 10:40:13 -0800 X-Sieve: CMU Sieve 2.2 Received: from smtp3.Stanford.EDU (smtp3.Stanford.EDU [171.67.16.138]) by pobox02.stanford.edu (Postfix) with ESMTP id DEBEB8EB806F for ; Mon, 6 Feb 2006 10:40:13 -0800 (PST) Received: from magellan.stanford.edu (magellan.Stanford.EDU [171.64.90.216]) by smtp3.Stanford.EDU (8.12.11/8.12.11) with ESMTP id k16Ie9Sk023540; Mon, 6 Feb 2006 10:40:09 -0800 Received: (from rsimpson@localhost) by magellan.stanford.edu (8.11.7p1+Sun/8.11.7) id k16Ie9Y03952; Mon, 6 Feb 2006 10:40:09 -0800 (PST) Date: Mon, 6 Feb 2006 10:40:09 -0800 (PST) From: Dick Simpson 650-723-3525 Message-Id: <200602061840.k16Ie9Y03952@magellan.stanford.edu> To: william.r.adams@lmco.com Subject: RE: RE: Re: Radio Science Ingress Cc: dale.k.howell@lmco.com, jtwicken@stanford.edu HGA continues to be off Earth-point at MGS occultation egress - - - - - - - - - From today's MGS RS health report: Anomalies --------- DSN Occ # Start Notes === ====== ============== ============================================== 26 30851e 2006/032 23:15 Sidelobe at egress 26 30852e 2006/033 01:12 Sidelobe at egress 26 30853e 2006/033 03:10 Sidelobe at egress 26 30854e 2006/033 05:08 Sidelobe at egress 26 30855e 2006/033 07:05 Sidelobe at egress 54 30859e 2006/033 14:57 Sidelobe at egress 54 30860e 2006/033 16:54 Sidelobe at egress 54 30861e 2006/033 18:52 Sidelobe at egress 25 30862e 2006/033 20:50 Sidelobe at egress 25 30863e 2006/033 22:47 Sidelobe at egress 25 30864e 2006/034 00:45 Sidelobe at egress 25 30865e 2006/034 02:43 Sidelobe at egress 25 30866e 2006/034 04:41 Sidelobe at egress 25 30867e 2006/034 06:38 Sidelobe at egress Sidelobes continue to be visible in the carrier level transition at egress. The HGA rewind is apparently incomplete at surface egress, and the HGA is not yet on Earth point at that time. These recordings are lost to science.