To:sot_shift from: Dan Schwartz date: 08 Sep 03, 12:00noon EDT Subject: SOT shift report 2003-09-08 L1509 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Sep_08_2003_L1509.txt. Shift L1509. Start at 251:12:00 GMT = 08:00am 08 Sep EDT End 09:30am 08 Sep SOT Lead DAS (Times will be given in GMT on day 251.) PLAN ---- Continue running load SEP0803A. Finish obsid 3912, ACIS-S observation of pulsar wind nebula in the supernova remnant, G11.23-0.3; then do obsid 3568, an ACIS-S/HETG observation of the bright HEAO A-3 BL Lac object H 1426+428, to search for the absorption by warm intergalactic gas. No Comm this shift. Next Comms: 251:2140 to 2340 252:0230 to 0430 252:1440 to 1640 252:2140 to 2225 253:0230 to 0315 253:0405 to 0605 253:1150 to 1350 254:0310 to 0510 254:1100 to 1200 Orbital events: 2003:251:00:31:20.476 564 EPERIGEE ORBIT PERIGEE 2003:252:08:15:00.771 565 EAPOGEE ORBIT APOGEE 2003:253:15:58:16.310 565 EPERIGEE ORBIT PERIGEE 2003:254:23:42:32.832 566 EAPOGEE ORBIT APOGEE 2003:256:07:25:57.777 566 EPERIGEE ORBIT PERIGEE 2003:257:15:10:22.670 567 EAPOGEE ORBIT APOGEE 2003:258:22:54:24.918 567 EPERIGEE ORBIT PERIGEE 2003:260:06:38:32.019 568 EAPOGEE ORBIT APOGEE 2003:261:14:23:07.068 568 EPERIGEE ORBIT PERIGEE EVENTS ------ Status at LOS, 251:11:58, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 272.858 deg Dec = -19.410 deg ROLL = 269.900 deg Format = 2 OBSID = 3912 G11.23-0.3 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 = 0.7 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 = 0.5880 mu-a Ascending through 92070 km. ACIS focal plane temperature -118.7 NOTES/ISSUES/PROBLEMS ACIS is a bit warm during a science observation. From the 9am status meeting: 8 supports over the weekend, no problems. Three load segments uplinked, on-board loads good until 255:07:15. SEP1503 products expected out today, after DSN meeting to confirm contact schedule. Load review tomorrow. HRC furniture arrived last Friday, to be installed today. Large roll bias variations were seen in obsid 4192, a 95 ks observation of the cold front in the cluster of galaxies MS1455.0+2232. This is due to a known case of bad stars in this sparse field. Impact on aspect solution to be assessed. FOT is meeting at 1am to review existing procedures for ACIS bakeout, and consider what needs to be changed for the putative December bakeout. Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- ------------------------------------------------------- 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 -------------------------------------------------------