To:sot_shift from: Dan Schwartz date: 25 Mar 02, 12:00noon EST Subject: SOT shift report 2002-03-25 L977 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Mar_25_2002_L977.txt. Shift L977. Start at 084:13:00 GMT = 08:00am 25 Mar EST End 12:00 noon 25 Mar SOT Lead DAS (Times will be given in GMT on day 084.) PLAN ---- Continue running load MAR2502B. Currently exiting from perigee passage. Will do a CTI measurement, and then ACIS-S observations of the pulsar PSR0628-28, obsid 2010, and the early-type galaxies in the group HCG 42, obsid 3215. No Comm this shift. Next Comms: 084:2000 to 2100 085:0500 to 0600 085:1310 to 1410 085:2200 to 2300 086:0535 to 0635 086:1500 to 1600 087:0045 to 0145 Orbital events: 2002:085:19:47:46.396 EAPOGEE 364 ORBIT APOGEE 2002:087:03:31:49.568 EPERIGEE 364 ORBIT PERIGEE 2002:088:11:15:00.727 EAPOGEE 365 ORBIT APOGEE 2002:089:18:57:54.206 EPERIGEE 365 ORBIT PERIGEE 2002:091:02:41:40.740 EAPOGEE 366 ORBIT APOGEE EVENTS ------ Status at LOS, 084:12:14, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 7 FIDS = 0 RA = 169.997 deg Dec = -9.000 deg ROLL = 296.549 deg Format = 2 OBSID = 61255 ACIS CTI SIM FA = -535 SIM TSC = -99616 (HRC-S) HETG = OUT (79.46 deg) LETG = OUT (77.96 deg) HRC-S HV is ON EPHIN Geom = SMALL E1300 = 16.4 LT 10.0 (RADMON P4GM = 23327.9 LT 300. Triggers) P41GM = 0.3 LT 8.47 A-leak = 0.2520 mu-a B-leak = 0.0480 mu-a Ascending through 25705 km. ACIS focal plane temperature -111.8. NOTES/ISSUES/PROBLEMS From the 9am status meeting: 8 supports over the weekend, all good. 3 load segments uplinked, on-board loads are good until 088:08:10. CAP 613B was run to move the HRC door 10,000 steps toward the "open" position, thereby configuring it in the "Mostly Closed" position. This followed a double close move, ie. when we executed SCS 107 last Monday, and then in the recovery load going into the radiation belt. Mike Juda has modified the HRC backstop checking script to test for loads which will cause an over-closed or over-opened configuration. AP0102A products went out Friday for email review today. Dave McCasland from TRW Space Park is visiting the OCC this week, to lead a study of the life-limiting systems on CHANDRA, with a view to assessing what we need to do to extend the mission lifetime to the 15 year range. He will be consulting with FOT subsystem engineers, and SOT team points of contact. Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 3148 IRAS 18325-5926 079:12:03 ACIS-S HETG looks good 3253 MACS-J1115.2+5320 082:03:37 ACIS-I NONE looks good 3065 HS 0830+1833 082:06:36 ACIS-S NONE looks good 3067 HS 0854+0915 082:08:40 ACIS-S NONE target not visible 3055 Q1231+481 082:10:21 ACIS-S NONE looks good 2952 SGR A* 082:12:43 ACIS-I NONE looks good 3452 IRAS 18325-5926 082:16:30 ACIS-S HETG looks good ------------------------------------------------------- Dan Schwartz, MS #3 das@head-cfa.harvard.edu phone: (617)495-7232 FAX: (617)495-7356 cell phone: (617)512-5627 pager: 877-693-7198 PIN 693-7198 or e-mail 6937198@archwireless.net -------------------------------------------------------