To:sot_shift from: Dan Schwartz date: 26 Jun 03, 12:00noon EDT Subject: SOT shift report 2003-06-26 L1435 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Jun_26_2003_L1435.txt. Shift L1435. Start at 177:13:00 GMT = 08:00am 26 Jun EDT End 11:00am 26 Jun SOT Lead DAS (Times will be given in GMT on day 177.) PLAN ---- Continue running load JUN2303C. Finish obsid 3891, part of a series of ACIS-S observations of the possible anomalous pulsar or magnetar AX J1845-0258. Then obsid 3499, a GTO ACIS-I second epoch observation of the star-forming region RCRA DARK CLOUD, and obsid 3892 for another observation of AX J1845-0258. Next Comms: 177:1250 to 1450 177:2140 to 2340 178:0215 to 0315 178:1220 to 1420 178:2115 to 2215 179:0250 to 0450 179:0920 to 1120 179:2110 to 2210 180:0310 to 0510 180:1025 to 1225 180:2100 to 2200 Orbital events: 2003:178:07:16:56.162 537 ORBIT APOGEE 2003:179:15:02:09.967 537 ORBIT PERIGEE 2003:180:22:45:43.478 538 ORBIT APOGEE 2003:182:06:31:14.791 538 ORBIT PERIGEE 2003:183:14:14:23.638 539 ORBIT APOGEE 2003:184:21:59:19.216 539 ORBIT PERIGEE 2003:186:05:42:29.158 540 ORBIT APOGEE 2003:187:13:26:32.254 540 ORBIT PERIGEE EVENTS ------ Status at LOS, 177:07:11, was as follows: PCAD MODE = NMAN CONTROL LAW FLAG = NPNT Stars: = 0 FIDS = 0 RA = 281.392 deg Dec = -2.390 deg ROLL = 163.109 deg Format = 2 OBSID = 3891 maneuvering to AX J1845-0258 SIM FA = -467 SIM TSC = 75623 (ACIS-S) DITHER = ENAB HETG = OUT (79.46 deg) LETG = OUT (77.59 deg) HRC-S HV is ON EPHIN Geom = LARG E150 = 3.5 E300 = 0.1 E1300 = 0.0 LT 10.0 (RADMON P4GM = 0.0 LT 300. Triggers) P41GM = 0.0 LT 8.47 A-leak = 1.0200 mu-a B-leak = 0.8080 mu-a Gyro 1 Curr 1 148.80ma Gyro 1 Curr 2 100.80ma Ascending through 70623 km. ACIS focal plane temperature -118.3. 12:50 AOS expected Status at AOS, 177:12:52, was as follows: PCAD MODE = NMAN CONTROL LAW FLAG = NPNT Stars: = 0 FIDS = 3 RA = 292.111 deg Dec = -12.229 deg ROLL = 121.919 deg Format = 2 OBSID = 3499 maneuvering to RCRA Dark Cloud SIM FA = -467 SIM TSC = 75623 (ACIS-S) DITHER = ENAB HETG = OUT (79.46 deg) LETG = OUT (77.59 deg) HRC-S HV is ON EPHIN Geom = LARG E150 = 1.3 E300 = 0.0 E1300 = 0.0 LT 10.0 (RADMON P4GM = 0.0 LT 300. Triggers) P41GM = 0.0 LT 8.47 A-leak = 1.0200 mu-a B-leak = 0.4360 mu-a Gyro 1 Curr 1 158.40ma Gyro 1 Curr 2 100.80ma Ascending through 97250 km. ACIS focal plane temperature -119.7. 13:13 start SIM translation 13:17 transition to Normal Pointing mode. SIM at ACIS-I focus & aim point 13:19 locked on 5 stars, 3 fids. 14:50 LOS. Status at AOS, 77:14:47, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 285.470 deg Dec = -36.984 deg ROLL = 36.759 deg Format = 2 OBSID = 3499 RCRA Dark Cloud SIM FA = -535 SIM TSC = 92903 (ACIS-I) DITHER = ENAB HETG = OUT (79.46 deg) LETG = OUT (77.59 deg) HRC-S HV is ON EPHIN Geom = LARG E150 = 2.3 E300 = 0.1 E1300 = 0.0 LT 10.0 (RADMON P4GM = 0.0 LT 300. Triggers) P41GM = 0.0 LT 8.47 A-leak = 1.0200 mu-a B-leak = 0.3440 mu-a Gyro 1 Curr 1 158.40ma Gyro 1 Curr 2 100.80ma Ascending through 104147 km. ACIS focal plane temperature -119.7. NOTES/ISSUES/PROBLEMS From the 9am status meeting: Two supports. Commanding issues being worked -- problems turning off the spacecraft. Ran CAP 843C to cool the ACA focal plane one deg C, to -14 deg C. Install of ONLS 3.9.3 seems to work for the OFLS. Will do some more regression runs this morning, then start the JUL0703 schedule run. Seeing some ACA yellow limit trips due to the focal plane cooling. These were set based on the trends with the focal plane at -10 deg C, and the yellow limits will be changed for the new set point. The gyro current was very noisy through most of day 176, settled at the end of the day at ~155ma. Telecon yesterday approved go-ahead for the swap to IRU unit B on July 19, and defined a rigorous criterion based on the mode of the IRU A1 current which would force an earlier immediate IRU swap. Installation of ONLS 3.9.3 seemed to go well. Two issues developed surfaced overnight: data isn't flowing to the CXC, and the CRFOFF (correct name?) script hangs the workstation. These are expected to be fixed this morning, following the current contact. A series of things were done on 3rd string which seemed to clear up the latter problem -- will diagnose further to see the exact cause. Electrical installation is proceeding in the TST and control rooms for the rest of the week. Thermal working group telecon at 11am today, 305-503-1818 422 The standard telecon number 405 244 5060 doesn't work, just gives a busy signal. Scott has contacted SAO communications person. Meanwhile telecons will be held at 305 503 1818, 421 or 422. Rino presented the new eclipse handling procedures in a telecon yesterday. Subsequently he has documented the process used to define the verification tests, and developed a matrix mapping the tests to each new or changed patch. This should close out actions from the telecon, which essentially recommended approval by the FD CCB. Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- No new data, due to down time during ONLS 3.9.3 install ------------------------------------------------------- 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 -------------------------------------------------------