To:sot_shift from: Dan Schwartz date: 13 Jul 04, 12:00noon EDT Subject: SOT shift report 2004-07-13 L1818 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/web-cxc/htdocs/acis/SOT_reports/Jul_13_2004_L1818.txt. Shift L1818. Start at 195:12:00 GMT = 08:00am 13 Jul EDT End 11:00am 13 Jul SOT Lead DAS (Times will be given in GMT on day 195.) PLAN ---- Continue running load JUL1204B. Currently in perigee passage. Upon egress will do two ACIS-S/LETG observations of Mkn 421, obsid's 5171 and 5332, for calibration of the spatial differences of composition of the ACIS OBF contaminant. No Comm this shift. Next Comms: 195:2200 to 2300 196:0345 to 0445 196:1015 to 1115 196:2115 to 2215 197:0345 to 0445 197:1100 to 1200 197:1900 to 2100 198:0345 to 0445 198:1300 to 1400 Orbital events: 2004:195:09:33:45.002 681 EPERIGEE ORBIT PERIGEE 2004:196:17:17:11.722 682 EAPOGEE ORBIT APOGEE 2004:198:01:02:07.648 682 EPERIGEE ORBIT PERIGEE 2004:199:08:45:20.652 683 EAPOGEE ORBIT APOGEE 2004:200:16:29:56.065 683 EPERIGEE ORBIT PERIGEE 2004:202:00:13:15.508 684 EAPOGEE ORBIT APOGEE 2004:203:07:57:14.225 684 EPERIGEE ORBIT PERIGEE 2004:204:15:40:48.964 685 EAPOGEE ORBIT APOGEE 2004:205:23:24:22.575 685 EPERIGEE ORBIT PERIGEE EVENTS ------ Status at LOS, 195:11:58, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 8 FIDS = 0 RA = 315.502 deg Dec = -3.701 deg ROLL = 131.187 deg Format = 2 OBSID = 60135 perigee passage SIM FA = -467 SIM TSC = -99616 (HRC-S) DITHER = ENAB HETG = OUT (79.46 deg) LETG = IN ( 4.09 deg) HRC-I HV is ON EPHIN Geom = SMAL E150 = 1248780.5 E300 = 67790.9 E1300 = 113.3 LT 10.0 (RADMON P4GM = 73886.2 LT 300. DISABLED) P41GM = 0.8 LT 8.47 A-leak = 1.0200 mu-a B-leak = 0.5240 mu-a Ascending through 40819 km. ACIS focal plane temperature -119.5 degC. EPH temp 74.81 degF NOTES/ISSUES/PROBLEMS From the 9am status meeting: Three 34m supports over the past day, no issues. One segment of JUL1204B uplinked, on-board loads good until 199:05:17. Still working on the JUL1904 products, no load review today. FOT/engineering is involved in simulations all day. This morning we are running a rehearsal of the nominal eclipse off-point which will occur next Sunday morning. This afternoon the SIM will be repeated with an anomaly thrown in. The objective will be to recover Chandra to safe conditions. A future SIM will analyze and recover from the anomaly. ACIS ops team met yesterday to review their CAP 754 to dump the BEP memory, as part of the diagnosis of the obsid 5008 FEP-reset anomaly. A revised CAP was circulated for review after tomorrow's 9am status meeting. Monday is planned to have IOS upgrade on the admin firewall. Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 4944 A3395s 193:18:49 ACIS-I NONE Looks good 4704 SCULPTOR DWARF GAL 194:01:24 ACIS-S NONE Looks good 5331 Mkn 421 194:04:28 ACIS-S LETG Looks good - cal obs. ------------------------------------------------------- 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 -------------------------------------------------------