To:sot_shift from: Dan Schwartz date: 16 Dec 02, 12:00noon EST Subject: SOT shift report 2002-12-16 L1243 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Dec_16_2002_L1243.txt. Shift L1243. Start at 350:13:00 GMT = 08:00am 16 Dec EST End 12:00 noon 16 Dec SOT Lead DAS (Times will be given in GMT on day 350.) PLAN ---- Continue running load DEC1602C. Do ACIS-S observations of quasars SDSS J144231+011055 (obsid 3960) and 2MASS145331+1353 (obsid 4045), then of the cooling flow cluster of galaxies Abell 1991 (obsid 3193). Next Comms: 350:1600 to 1700 351:0245 to 0345 351:1745 to 1845 352:0330 to 0530 352:1140 to 1340 352:1700 to 1800 352:2320 to 0120 353:0700 to 0900 353:1700 to 1800 354:0000 to 0100 Orbital events: 2002:350:06:21:21.697 EAPOGEE 464 ORBIT APOGEE 2002:351:14:06:04.241 EPERIGEE 464 ORBIT PERIGEE 2002:352:21:50:16.984 EAPOGEE 465 ORBIT APOGEE 2002:354:05:35:40.106 EPERIGEE 465 ORBIT PERIGEE 2002:355:13:19:18.461 EAPOGEE 466 ORBIT APOGEE 2002:356:21:04:49.282 EPERIGEE 466 ORBIT PERIGEE EVENTS ------ Status at LOS, 50:07:48, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 139.014 deg Dec = 29.504 deg ROLL = 83.267 deg Format = 2 OBSID = 4209 DLS J0916+2931 SIM FA = -535 SIM TSC = 92903 (ACIS-I) 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 = 1.0200 mu-a B-leak = 0.5400 mu-a Descending through 132885 km. ACIS focal plane temperature -119.5. 1601: AOS Status at LOS, 50:07:48, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 223.643 deg Dec = 18.630 deg ROLL = 44.741 deg Format = 2 OBSID = 3193 Abell 1991 SIM FA = -467 SIM TSC = 75624 (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 = 1.0200 mu-a B-leak = 0.3720 mu-a Descending through 124113 km. ACIS focal plane temperature -119.7. 1659: LOS Descending through 122215 km. ACIS focal plane temperature -119.7. NOTES/ISSUES/PROBLEMS From the 9am status meeting: Eight supports over the weekend. A DSS-16 support had problems with their new equipment, with the antenna metric and pointing controller. Going back to the old equipment, and then back to the new cleared up the problem. However, by that time the SSR had rolled over to SSR-B. All data has been recovered, and we have transitioned Chandra back to SSR-A. We plan to power down SSR-B on the current pass this morning. We have no net impact on Chandra ops or data. Two more load segments were uplinked; on-board loads are good until 354:15:05. CAP 682, to reinitialize the OFP thruster command processing was executed. The DEC2302 products are expected out today for review tomorrow. This is the two week load to bridge over the TRW holiday break. (Yes, we know they are now Northrup-Grumman, but it will take a while for me to get used to it -- at least till I get a new coffee cup.) During the long pointings perpendicular to the sun last week, EPHIN only reached 92.7 deg F -- not quite as hot as expected. There is a telecon at 11am this morning, to consider turning off the on-board stellar aberation correction. This is needed/beneficial for the Titan occultation of the Crab. The aberation in question was due only to the spacecraft motion about the earth. Aberation of the earth about the sun has always been off. There is apparently no negative implications, and the telecon recommended permanently turning off this correction. Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 2956 NGC7469 346:13:54 ACIS-S HETG Looks good 3147 NGC 7469 347:12:16 ACIS-S HETG Looks good 4058 UGC2369 348:08:11 ACIS-S NONE Looks good 4067 BR 0424-2209 348:11:28 ACIS-S NONE Looks good 3258 MACS-J1311.0-0310 349:06:18 ACIS-I 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 -------------------------------------------------------