SOT Shift Report 2004-10-28 L1925 Duration: 28 Oct 2004 08:30 EDT - 28 Oct 2004 09:30 EDT 28 Oct 2004 12:30 GMT - 28 Oct 2004 13:30 GMT SOT Lead: Tom Aldcroft ======================================== Plan ---- Continue with OCT2504C load: Study the accretion flow geometry of the Galactic black hole GX339-4 in outburst; then study of the dynamic shock in the pulsar wind of the Crab Nebula; and next a series of cal observations of Cas A: 04571 GX 339-4 2004:302:09:03:03.690 51.0 ACIS-S HETG I4624 CAL-ER (59988) 2004:302:23:46:41.122 0.0 -- -- 04624 The Crab Nebula 2004:303:00:34:33.698 10.5 ACIS-S HETG 05155 Cas A[I3,-120,-3. 2004:303:04:06:50.500 2.0 ACIS-I NONE 05156 Cas A[S3,-120,-2. 2004:303:05:08:10.500 2.0 ACIS-S NONE 05157 Cas A 2004:303:05:51:22.231 5.0 HRC-I NONE 05284 The Crab Nebula 2004:303:07:51:59.013 9.4 ACIS-S HETG T_E22 CAL-ER (59987) 2004:303:10:52:36.353 10.2 -- -- Events ------ No comm this pass Notes from the 9am meeting -------------------------- Ops: In Radiation Zone NO Current SI ACIS-S Grating HETG Observation ID 04571 Target GX 339-4 Altitude 120.5 kkm Desc Radmon Disable 303/10:39z Next Radiation Zone 303/13:43z to 304/01:21z MP: - NOV0104B load out, email review by noon. Based on issues with EPHIN temperatures there is a good chance that a reschedule will be required. This is to be discussed in a meeting today at 10am (x1165). Eng: - The new EPHIN thermal model for NOV0104 predicts three instances of high temperatures that could lead to rail voltage events, whereas the current (operationally approved) model shows no problems. The new model successfully predicted the rail voltage problem we are seeing at this time (again in contrast to the current model). Given this, a meeting will be held (10am x1165) to discuss rescheduling the NOV0104 load as well as the larger issue of radiation monitoring as we enter the November "hot" season. Patches are in place to use HRC as an alternate radiation detector, although the exact trip limits are not well calibrated at this time. The patch to selectively disable EPHIN from radiation monitoring will be brought to the FDB tomororw. Radiation: - Sun remains quiet, with one minor C-class flares seen in the X-ray flux - A faint slow full halo CME was seen, possibly from region 691. This is expected to arrive at Earth around Oct. 31. - ACE and GOES radiation rates are very low. Solar Activity Forecast: Solar activity is expected to persist at low levels. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to mildly unsettled for the next 72 hours. GOT: - Flight MOP is up on a Linux string for preliminary testing Quicklooks ---------- 4532 V1187 Sco ACIS-S NONE OK 5159 G21.5-09 ACIS-S NONE OK Snapshot -------- Snapshot shows EPHIN 27V rail droop. Apart from this the snapshot matches expected configuration: UTC 2004:302:11:56:03 (Oct28) f_ACE 1.27e+01 F_CRM 2.24e+08 Kp 0.7 R km 127077D OBT 2004:302:11:55:39 CTUVCDU 7629439 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 215351739.83 ONLVCDU 7629408 OBC Errs 0 OBSID 4571 EPState SUN SIM TTpos 72640 HETG Angle 5.96 PCADMODE NPNT RA 255.705 Bus V 29.77 SIM FApos -467 LETG Angle 77.59 PCONTROL NPNT Dec -48.759 Bus I 27.98 AOFSTAR GUID Roll 239.777 ACA Object FFFSSSSS Dither ENAB HRC-I HV ON ACA ImFunc TTTTTTTT Dith Yang -5.55 Yaw Rate 0.13 HRC-S HV OFF ACA CCD Temp -15.6 Dith Zang 1.94 Pitch Rate -0.10 OBSMode NEXT ACA Int Time 1.698 Roll Rate 0.13 Door OP UNAC AOACSTAT OK FSS SunBeta SUN Door CL UNAC FSS Alfa -0.37 Batt 1 SOC 100.00% Avg HRMA Temp 70.61 FSS Beta 39.88 Batt 2 SOC 100.00% ACIS Stat7-0 65 Avg OBA Temp 53.68 SA Resolv 49.99 Batt 3 SOC 100.00% Cold Rad -127.9 OBA Tavg Fault NFLT SA Sun Pres ILLM Warm Rad -82.0 OBA Trng Fault NFLT +Y SA Amps 13.72 RadMon ENAB HRMA power 64.50 SCS 128 ACT -Y SA Amps 13.91 EPHIN Geom SMAL OBA power 35.10 SCS 129 ACT +Y SA Temp 114.81 E150 15.2 SCS 130 ACT -Y SA Temp 115.49 E300 1.4 Roll Mom. -9.508 SCS 107 INAC E1300 1.0 Pitch Mom. 3.418 UpL Cmd Acc 17910 EPH A-Leak 1.0200 P4GM 0.0 Yaw Mom. -2.266 Cmd Rej A 97 EPH B-Leak 1.0200 P41GM 0.0 EPH temp 96.12 Gyro 1 Curr 1 7.20 Roll Bias -0.7644 EPH 27V 16.59 M Unload MON Gyro 1 Curr 2 9.60 Pitch Bias -1.9707 TSC Move STOP Gyro 2 Curr 1 103.20 Yaw Bias -1.0619 CTX A PWR 36.43 FA Move STOP Gyro 2 Curr 2 98.40 CTX A Volts 3.52 OTG Move DISA Explanation Current Data: UTC 2004:302:13:30:05 (Oct28) f_ACE 1.63e+01 F_CRM 2.24e+08 Kp 0.7 R km 126787D Currently scheduled FPSI, OTG : ACIS-S HETG Estimated Kp : 0.67 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 1.63e+01 GOES-10 P2 flux, in RADMON P4GM units : 0.00 GOES-12 P2 flux, in RADMON P4GM units : 0.00 GOES-10 P5 flux, in RADMON P41GM units : 0.02 GOES-12 P5 flux, in RADMON P41GM units : 0.02 Orbit Start Time : 2004:301:03:59:01 Geocentric Distance (km), Orbit Leg : 126792 D CRM Region : 1 (Solar_Wind) External Proton Flux (p/cm^2-s-sr-MeV) : 1.63000000000e+01 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 3.26000000000e+00 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 2.22540707940e+09 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 2.24087789160e+08