To:sot_shift from: Dan Schwartz date: 26 Aug 02, 12:00noon EDT Subject: SOT shift report 2002-08-26 L1131 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Aug_26_2002_L1131.txt. Shift L1131. Start at 238:12:00 GMT = 08:00am 26 Aug EDT End 12:00 noon 26 Aug SOT Lead DAS (Times will be given in GMT on day 238.) PLAN ---- Continue running load AUG2502A. This is the restart after radiation shutdown. This load completes with obsid 2917, an ACIS-S observation of an ultra-luminous extra-nuclear X-ray source in the nearby galaxy IC 342. Then start load AUG2602D with obsid 2549, an ACIS-I observation of X-ray emission from stars in Orion. No Comm this shift. Next Comms: 238:1800 to 1900 239:0200 to 0300 239:1000 to 1200 239:2050 to 2150 240:0500 to 0600 240:1345 to 1445 240:2300 to 0000 241:0745 to 0845 241:1630 to 1730 Orbital events: 2002:235:05:40:28.830 420 EPERIGEE ORBIT PERIGEE 2002:236:13:24:04.268 421 EAPOGEE ORBIT APOGEE 2002:237:21:07:43.408 421 EPERIGEE ORBIT PERIGEE 2002:239:04:51:51.878 422 EAPOGEE ORBIT APOGEE 2002:240:12:35:44.029 422 EPERIGEE ORBIT PERIGEE 2002:241:20:20:02.054 423 EAPOGEE ORBIT APOGEE 2002:243:04:04:32.349 423 EPERIGEE ORBIT PERIGEE 2002:244:11:48:33.813 424 EAPOGEE ORBIT APOGEE 2002:245:19:33:41.256 424 EPERIGEE ORBIT PERIGEE 2002:247:03:17:01.836 425 EAPOGEE ORBIT APOGEE EVENTS ------ Status at LOS, 238:10:14, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 4.235 deg Dec = 79.291 deg ROLL = 149.839 deg Format = 2 OBSID = 4363 3C 6.1 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 = 0.2 LT 10.0 (RADMON P4GM = 25.7 LT 300. Triggers) P41GM = 0.3 LT 8.47 A-leak = 1.0200 mu-a B-leak = 0.3280 mu-a Ascending through 99000 km. ACIS focal plane temperature -119.7. NOTES/ISSUES/PROBLEMS From the 9am status meeting: Eight supports over the weekend. A long contact from 12:30 to 19:15 UT yesterday (Sunday, day 237) allowed execution of an ACA dark current and warm pixel test. All data from the test was collected successfully, pending science analysis to confirm the quality. On day 236:02:11 high EPHIN rates caused RADMON to trigger SCS 107. AUG2502A was built to carry out the dark current test and to resume science observing at 238:04:46. 116.5 ksec of scheduled target observations were lost. SEP0202 products are expected to be circulated later today for an email review. ASVT testing today for the patches for the lunar eclipse. Patches have previously been verified to work when previously loaded in ASVT. Today's test is end-to-end patch loading, to confirm the CPU image. A debrief of last Thursday's simulation of a SIM failure will be held in the action room tomorrow, at 9:30am EDT, following the 9am status meeting. Also following the status meeting is a review of the CAP for the EIA test. ACE 112-187 keV soft protons have remained around 10,000, but currently have started to decrease. At 10,000 the total dosage for the orbit would be about 1.5E9 (0.4E9 accumulated so far). The HETG is inserted for the last 30 Ksec of this orbit. Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 3028 PSS2322+1944 235:13:22 ACIS-S NONE Looks ok 2899 M31-T5 235:15:13 ACIS-I NONE Looks ok 3091 FTM0134-0931 235:17:06 ACIS-S NONE Looks ok 2783 SNR N157B 235:17:55 ACIS-S NONE Looks ok, interrupted by SCS 107 trip. ------------------------------------------------------- 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 -------------------------------------------------------