To:sot_shift from: Dan Schwartz date: 10 Sep 01, 12:00noon EDT Subject: SOT shift report 2001-09-10 L781 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Sep_10_2001_L781.txt. Shift L781. Start at 253:12:00 GMT = 08:00am 10 Sep EDT End 12:00 noon 10 Sep SOT Lead DAS (Times will be given in GMT on day 253.) PLAN ---- Continue running load SEP1001B. Do OBSID 1913, the type I X-ray burster SAX J1324.5-6313, with ACIS-S. Then do CTI measurements surrounding perigee passage. No Comm this shift. Next Comms: 253:1700 to 1800 254:0040 to 0240 254:1020 to 1120 254:2015 to 2205 255:1710 to 1910 256:0330 to 0500 256:1440 to 1640 Orbital events: 2001:253:19:27:54.731 289 EPERIGEE ORBIT PERIGEE 2001:255:03:12:04.221 290 EAPOGEE ORBIT APOGEE 2001:256:10:57:22.980 290 EPERIGEE ORBIT PERIGEE 2001:257:18:40:41.693 291 EAPOGEE ORBIT APOGEE 2001:259:02:25:52.442 291 EPERIGEE ORBIT PERIGEE 2001:260:10:08:37.117 292 EAPOGEE ORBIT APOGEE EVENTS ------ Status at LOS, 253:08:50, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 204.034 deg Dec = -34.066 deg ROLL = 227.867 deg Format = 2 OBSID = 2021 SAX J1324.5-631 SIM FA = -467 SIM TSC = 75623 (ACIS-S) HETG = OUT (79.84 deg) LETG = OUT (77.96 deg) HRC-I HV is ON EPHIN Geom = LARG E1300 = 0.0 LT 10.0 (RADMON P4GM = 0.1 LT 300. Triggers) P41GM = 0.0 LT 8.47 A-leak = 0.8320 mu-a B-leak = 0.1520 mu-a Descending through 91192 km. ACIS focal plane temperature -119.9. NOTES/ISSUES/PROBLEMS From the 9am status meeting: A quiet weekend. Three segments of SEP1001B were uplinked, onboard loads are good until 257:06:10. SEP1701 backstop showed a mechanism-check problem, will be repaired and products sent out this morning for an email review today. DSS-24 is back up and operational. We switched two contacts to it over the weekend and they worked fine. We will try to switch back the contacts later this week which had been switched to other stations. There will be some maintenance on 24 done by DSN this week. We had a fixed point overflow error on the guide star loss count. This has happened before, no problem. The CAP for the monthly ephemeris update is being prepared. In news from the Chandra Symposium last week, NASA approved a change for Chandra to be a 10 year prime mission. This reflects very positively on the richness and quality of science being published, on the efficiency and smoothness of flight operations and data flow to users, and the quality of the development effort which has given us a reliable and well functioning observatory. Thanks to ALL ! Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 2064 NGC 5236 248:00:22 ACIS-S Looks good. 1042 3C397 249:05:50 ACIS-S Looks good 1043 NGC 6946 250:00:54 ACIS-S Looks good 2886 M31-S2 251:11:44 HRC-I [-- no obvious 2890 M31-S1 251:12:09 HRC-I problems 2903 M31-CORE 251:12:34 HRC-I in this 2907 M31-N1 251:12:59 HRC-I set. Sources not 2911 M31-N2 251:13:24 HRC-I always visible. --] ------------------------------------------------------- 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 -------------------------------------------------------