To:sot_shift from: Dan Schwartz date: 10 Oct 02, 12:00noon EDT Subject: SOT shift report 2002-10-10 L1176 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Oct_10_2002_L1176.txt. Shift L1176. Start at 283:12:00 GMT = 08:00am 10 Oct EDT End 12:00 noon 10 Oct SOT Lead DAS (Times will be given in GMT on day 283.) PLAN ---- Continue running load OCT0502B. Doing OBSID 2985, a long ACIS-S observation of PKS 0458-020, a quasar at redshift 2.286 which has an intervening z=2.04 absorption line system, to try to detect the heavy element abundances (O to H ratio) in that absorber. No Comm this shift. Next Comms: 283:1615 to 1715 284:0100 to 0200 284:0930 to 1030 284:1550 to 1750 285:0200 to 0300 285:0315 to 0730 285:0415 to 0715 285:1145 to 1245 285:2105 to 2305 286:0420 to 0520 286:1400 to 1600 287:0000 to 0100 Orbital events: 2002:284:03:42:27.940 439 ORBIT APOGEE 2002:285:11:26:45.899 439 ORBIT PERIGEE 2002:286:19:09:57.448 440 ORBIT APOGEE 2002:288:02:54:10.668 440 ORBIT PERIGEE 2002:289:10:37:45.191 441 ORBIT APOGEE 2002:290:18:21:11.551 441 ORBIT PERIGEE 2002:293:09:48:40.120 442 ORBIT PERIGEE EVENTS ------ Status at LOS, 283:08:39, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 75.316 deg Dec = -2.001 deg ROLL = 81.309 deg Format = 2985 OBSID = 914 PKS 0458-020 SIM FA = -467 SIM TSC = 75623 (ACIS-S) HETG = OUT (79.46 deg) LETG = OUT (77.96 deg) HRC-S HV is ON EPHIN Geom = LARG E1300 = 0.0 LT 10.0 (RADMON P4GM = 0.0 LT 300. Triggers) P41GM = 0.0 LT 8.47 A-leak = 0.4200 mu-a B-leak = 0.3480 mu-a Ascending through 96342 km. ACIS focal plane temperature -119.7. NOTES/ISSUES/PROBLEMS From the 9am status meeting: Two supports, no issues, last segment of OCT0502B was uplinked. On-board loads good until 287:01:58. OCT1402D had no problems, Flight Director signed off this morning. OCT2102 build will utilize AGASC 1.5 for the first time. EPHIN reached 88.3 deg F. Tomorrow, 9:30 to noon, Keith Patrick will be conducting meetings on the life limiting items for ACIS. This will be on the dialup number 405 244 5060 pin 1165#. Today's meeting with Keith covered life limiting items on HRC, the SIM and the OTG. Technical discussions revealed those systems were robust, with wide margins in most areas. Issues to think about for the future included whether we want to continue closing the HRC door, use of HRC shield rates in place of a failed EPHIN (implies keeping PM tube HV on during belt passage), assessment of the radiation dosage actually received compared to what was designed to, the lubricant used in the SIM and whether we want to make long moves to distribute it. Scott Wolk pointed people to the URL's http://cxc.harvard.edu/mta/REPORTS/ and http://cxc.harvard.edu/mta/REPORTS/MONTHLY/ for, respectively, the weekly and monthly SOT monitoring and trends reports. Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 3340 AX J1617.0+3506 282:00:10 ACIS-S NONE Looks good 3037 SDSS102332+633508 282:02:06 ACIS-S NONE Looks good 3022 PSS0808+5215 282:03:48 ACIS-S NONE 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 -------------------------------------------------------