To:sot_shift from: Dan Schwartz date: 13 Apr 01, 12:00noon EDT Subject: SOT shift report 2001-04-13 L631 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Apr_13_2001_L631.txt. Shift L631. Start at 103:12:00 GMT = 08:00am 13 Apr EDT End 12:00 noon 13 Apr SOT Lead DAS ACIS PPP (Times will be given in GMT on day 103.) PLAN ---- Continue running load APR1301B, the restart from the latest EPHIN trigger. Do OBSID 2087, an ACIS-S/HETG observation of the Seyfert 1 galaxy MKN 509, to study the absorbing gas, simultaneously with HST. Next Comms: 103:15:25 to 17:25 104:00:00 to 01:00 104:09:00 to 10:00 104:17:00 to 19:00 105:03:00 to 04:00 105:11:30 to 13:30 105:19:00 to 20:00 Orbital events: 2001:104:09:24:00.129 233 APOGEE 2001:107:00:51:41.194 234 ORBIT APOGEE 2001:108:08:35:54.318 234 ORBIT PERIGEE 2001:109:16:19:17.601 235 ORBIT APOGEE 2001:111:00:02:39.635 235 ORBIT PERIGEE 2001:112:07:46:43.926 236 ORBIT APOGEE EVENTS ------ Status at LOS, 103:06:57, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 0 RA = 166.739 deg Dec = 72.597 deg ROLL = 212.811 deg Format = 2 OBSID = 2080 (left from NGC 3516) SIM FA = -467 SIM TSC = -99616 (HRC-S) HETG = IN ( 6.34 deg) LETG = OUT (78.34 deg) HRC-S HV is ON EPHIN Geom = LARG E1300 = 0.3 LT 10.0 (RADMON P4GM = 22.2 LT 300. Triggers) P41GM = 0.3 LT 8.47 A-leak = 1.0200 mu-a B-leak = 0.2440 mu-a Ascending through 60137 km. ACIS focal plane temperature -119.9. 15:25 AOS Status at AOS, , was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 311.059 deg Dec = -10.734 deg ROLL = 104.670 deg Format = 2 OBSID = 2087 (MKN 509) SIM FA = -467 SIM TSC = 75623 (ACIS-S) HETG = IN ( 6.34 deg) LETG = OUT (78.34 deg) HRC-S HV is ON EPHIN Geom = LARG E1300 = 0.2 LT 10.0 (RADMON P4GM = 10.5 LT 300. Triggers) P41GM = 0.0 LT 8.47 A-leak = 1.0200 mu-a B-leak = 0.2200 mu-a Ascending through 107711 km. ACIS focal plane temperature -119.9. NOTES/ISSUES/PROBLEMS We have resumed the observing program, and all seems well. For ACIS, Paul notes: " Event rates and threshold crossings look nominal. The delta overclocks are relatively high, -30 to -50." However, there were more CME events on April 11 and 12 which have not yet hit us. From the 9am status meeting: All command loads for the remainder of the APR1301B have been uplinked. These were uplinked at the 103:06:00 comm, to restart the observing program with OBSID 2087. The CAP 675 was run to enable SCS 107. RADMON was enabled in the load. A momentum dump was not required after all. Next weeks' load will be rerun for continuity. It is expected that a unix diff will find no changes, in which case it will be signed off. Yesterday's Flight Director's CCB approved a revision of content for the OFLS 9.1a, which is due for delivery Ap 23rd, and to be tested the first week of May. Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 2080 NGC 3516 100:18:11 ACIS-S HETG Looks good. (only 75Ksec on target, due to EPHIN trigger.) ------------------------------------------------------- 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 -------------------------------------------------------