Aug_02_2004_L1838.txt Shift L1838 Start at 2004:215 11:00 GMT = 2004 Aug 02 7:00 am EDT End 2004 Aug 02 2:30 pm EDT SOT shift report 2004-08-02 L1838 http://asc.harvard.edu/acis/SOT_reports/sot-shift.html or /proj/web-cxc/htdocs/acis/SOT_reports/Aug_02_2004_L1838.txt SOT Lead Bill Podgorski SOT SC/ACA FOT-SI HRC-SI ACIS-SI OTHER Plan: - SCS-107 triggered on Saturday (July 31) at about 8am EDT (213:1202UT), about 10 hours before perigee and about an hour before radzone entry at 213:1255. Was due to extended ("puffed up") belts. Replan load AUG0104A developed, approved and uplinked duing 213:2245 pass. This load contained remainder of JUL2904A, commanding ending at 215:0550. AUG0204D was to start at 215:0550 after AUG0104A stopped, first LS's to be uplinked in last night's pass starting at 215:0230. At about 215:0145UT, prior to the pass, a surge in Cambridge power caused a failure of the OCC UPS system, with smoke and a resultant fire alarm. The OCC building was temporarily evacuated. The event brought down power on OCC UPS backed up power system. The 0230 pass was missed, and IST/GOT personnel came in to deal with the problem. The UPS system was bypassed and the power system restored to local Cambridge power. Computer systems restoration was initiated. As of 9am today the EHS system was up, but the main internal router, OCCHAMP1, suffered hardware failure during the incident and could not be brought back up. An older router was installed and is in the process of being re-configured for use. This router services the OCC internal network which includes greta, squirt HOSC interface, etc. The AUG04A loads ran out at 215:0550 (today). CHANDRA is now in normal point mode. The current attitude is safe for 3 days. Radiation zone entry will occur at 216:0209UT. The current plan is to manually run SCS-107 during this afternoon's pass (215:1800-1900). This can be done now using the EHS system, which is up. This will safe the SI's for radiation zone passage. DONE After SCS-107 is run, CAP 932 will be run to command an ACIS CTI. DONE A replan load is in preparation. This will begin after exit from the radiation zone at about 216:1730. Radiation levels are decreasing from the event peak on Aug 1 at about 12pm EDT. Flux levels are below 1000 now, and are expected to remain low. 3-day Solar-Geophysical Forecast issued Aug 1 at 22:00 UTC Solar Activity Forecast: Solar activity is expected to be at very low to low levels. Region 655 has the potential to produce isolated C-class flares. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels throughout the forecast period. Seq # ObsID It Target start time SI Grat RA dec roll Pitch ------------------------------------------------------------------------------------------------------------ AUG0204D: 400335 04552 1 4U 1957+11 (V1408 Aql) 2004:215:06:23:50.221 66.4 ACIS-S HETG 299.8562 11.7282 203.45 148.03 200299 05342 1 Vega 2004:216:01:13:08.139 3.0 HRC-I NONE 279.2431 38.8079 216.33 115.27 ---- T_E89 CAL-ER (60109) 2004:216:02:38:46.082 6.4 -- -- 284.5000 14.0000 223.15 137.49 ---- GG_89 CAL-ER (60108) 2004:216:05:18:19.305 3.6 -- -- 359.0000 -36.0000 77.46 135.89 ---- T_X90 CAL-ER (60107) 2004:216:14:30:57.294 20.8 -- -- 274.0000 -32.0000 282.40 141.09 500423 04598 1 RCW103 2004:216:20:39:50.932 5.0 ACIS-I NONE 244.3881 -51.1352 274.49 115.94 ORBITAL EVENTS: 2004:212:14:01:59.264 688 EAPOGEE ORBIT APOGEE 2004:213:21:45:37.781 688 EPERIGEE ORBIT PERIGEE 2004:215:05:29:34.791 689 EAPOGEE ORBIT APOGEE 2004:216:13:12:47.860 689 EPERIGEE ORBIT PERIGEE 2004:217:20:57:12.381 690 EAPOGEE ORBIT APOGEE 2004:219:04:41:01.205 690 EPERIGEE ORBIT PERIGEE EVENTS DONE OBSID -------------- ---- ----- Start Shift 215:1100 AOS DSS-54 (Madrid 34m) 215:1800 NOTE: this COMM extedded to 215/2245 Status of S/C at AOS was as expected 215:1805 - No realtime snapshot data on science net, known problem related to power problems. - No data on ACA GSE - ACIS and HRC EGSE running OK CAP 593: SCS-107 ran manually, results nominal 215:1825 Run CAP 932 Command ACIS to execute CTI (I-arrray) 215:1840 measurement using an RTS End of shift 215:1900 NOTES/ISSUES/PROBLEMS --------------------- 1) Status at AOS: 2) Notes from 9:00am meeting: Operations (Darrell): - 7 supports over weekend, 6 34m. 1 26m - Rolled over to SSR-B at 215:0547 due to loss of 215:0230-0330 comm - Have 18 hours unitl SSR-B is filled up. - Will try to dump SSR-A in next pass. Mission Planning (Kevin) - See above for new replan details. S/C Engineering(Dan): - Last eclipse of season was at 213:1536UT. - Due to SCS-107 run, onboard loads which were to handle eclipse were terminiated. - CAP 921 was run to uplink contingency load to handle eclipse. Ran thru eclipse (213/1536) in normal sun/gyro hold mode, was nominal. - Recovered to normal point mode on Saturday and made manual maneuver to safe attitude. SOT(Bill): - See above notes on radiation. DSOPS: - Several QL's (see below) GOT(Mike): - See above IST(Ron) - See above Meetings/events: - 9:30am Power failure follow-up - 1:00pm, Transition readiness review - 2:30pm, PM FOT Management Staff Mtg 3) Quick look data: Seq # ObsID It Target start time SI Grat Comment ------------------------------------------------------------------------------------------- JUL2704A: 700843 P3 04757 0 RXJ1420+5334 2004:210:17:35:00.787 10.0 ACIS-S NONE 600380 04725 1 NGC 4485/4490 2004:211:21:03:51.169 39.0 ACIS-S NONE 600411 05197 1 NGC4214 2004:212:08:21:51.169 29.0 ACIS-S NONE 700875 P2 04792 0 F1520-608 2004:212:16:49:33.266 4.0 ACIS-S NONE 400329 04452 1 V4641Sgr 2004:212:18:28:05.041 20.0 ACIS-S NONE