To:sot_shift from: Dan Schwartz date: 08 Oct 04, 12:00noon EDT Subject: SOT shift report 2004-10-08 L1905 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/web-cxc/htdocs/acis/SOT_reports/Oct_08_2004_L1905.txt. Shift L1905. Start at 282:12:00 GMT = 08:00am 08 Oct EDT End 10:00am 08 Oct SOT Lead DAS (Times will be given in GMT on day 282.) PLAN ---- Continue running load OCT0704B. Go through perigee passage, measure ACIS CTI, then do obsid 4644, an ACIS-S observation of a Target of Opportunity, the soft gamma-ray repeater SGR 1806-20. No comm this shift. Next Comms: 282:1800 to 1900 283:0345 to 0445 283:1100 to 1200 283:1735 to 1835 284:0345 to 0445 284:1100 to 1200 284:1930 to 2030 285:0205 to 0305 285:1100 to 1240 285:1535 to 1735 286:0345 to 0445 286:1420 to 1520 Orbital events: 2004:281:08:00:21.489 714 EAPOGEE ORBIT APOGEE 2004:282:15:44:28.388 714 EPERIGEE ORBIT PERIGEE 2004:283:23:28:10.993 715 EAPOGEE ORBIT APOGEE 2004:285:07:11:44.222 715 EPERIGEE ORBIT PERIGEE 2004:286:14:55:42.487 716 EAPOGEE ORBIT APOGEE 2004:287:22:38:57.458 716 EPERIGEE ORBIT PERIGEE 2004:289:06:22:39.300 717 EAPOGEE ORBIT APOGEE 2004:290:14:06:15.767 717 EPERIGEE ORBIT PERIGEE EVENTS ------ Status at LOS, 282:11:59, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 8 FIDS = 0 RA = 230.996 deg Dec = -54.001 deg ROLL = 225.717 deg Format = 2 OBSID = 60012 perigee attitude 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 = LARG E150 = 1.0 E300 = 0.1 E1300 = 0.0 LT 10.0 (RADMON P4GM = 0.0 LT 300. DISABLED) P41GM = 0.0 LT 8.47 A-leak = 0.6000 mu-a B-leak = 0.1200 mu-a Descending through 47462 km. ACIS focal plane temperature -119.7 degC. EPH temp 54.29 F NOTES/ISSUES/PROBLEMS From the 9am status meeting: Three supports in the past day, no issues. On-board loads good until 284:23:42. OCT1104 loads were reworked to optimize the momentum dump to the changed conditions following the ToO observations. OCT1104C products have been checked and await Flight Director signoff. LETG will be retracted before the next observation. Note that Monday, October 11 is an SAO holiday. NGST has a regular work day. The 130 ks of Abell 426 observations lost to the TOO's will probably be rescheduled soon, pushing the 130 ks HRC observation into December. Thus the ACIS focal plane cooling test associated with that HRC observation will slip. Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 4946 Abell 426 280:21:42 ACIS-S NONE Looks good 5520 GRB041006 281:05:28 ACIS-S LETG Looks good ------------------------------------------------------- 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 -------------------------------------------------------