Aug_11_2000_M385.txt Shift M385 Start at 2000:224:19:00:00 GMT = 2000 Aug 11 3:00pm EDT End 2000 Aug 11 5:30pm EDT SOT shift report 2000-08-11 M385 See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Aug_11_2000_M385.txt SOT Lead Robert Cameron SOT SC/ACA FOT-SI HRC-SI ACIS-SI OTHER Plan: - Running AUG0600C on decending leg with LETG inserted. Seq # ObsID Target start SI Grat RA dec roll ------------------------------------------------------------------------------------------ 390010 01792 PKS2155-304 2000:224:15:39:21.050 ACIS-S LETG 329.5332 -30.3242 27.06 390011 01793 PKS2155-304 2000:224:21:44:36.634 ACIS-S LETG 329.4966 -30.3362 26.08 ORBITAL EVENTS: 2000:223:03:17:09.696 139 EPERIGEE ORBIT PERIGEE 2000:223:08:14:44.614 140 XE1RADZ0 ELECTRON1 RADIATION EXIT0 2000:224:11:01:02.379 140 EAPOGEE ORBIT APOGEE 2000:225:12:51:25.065 140 EE1RADZ0 ELECTRON1 RADIATION ENTRY0 2000:225:18:46:00.717 140 EPERIGEE ORBIT PERIGEE 2000:225:18:47:25.065 140 EP1RADZ0 PROTON1 RADIATION ENTRY0 2000:225:19:43:25.065 140 XP1RADZ0 PROTON1 RADIATION EXIT0 2000:225:22:19:25.065 141 XE1RADZ0 ELECTRON1 RADIATION EXIT0 2000:227:02:29:10.755 141 EAPOGEE ORBIT APOGEE EVENTS DONE OBSID -------------- ---- ----- Start Shift 224:1900 DSN AOS (DSS-66, Madrid 26m) 224:1910 01792 DSN LOS (DSS-66, Madrid 26m) 224:2110 End of shift 224:2130 NOTES/ISSUES/PROBLEMS --------------------- 1) Chandra snapshot during comm: UTC 2000:224:20:01:02 (Aug11) f_ACE 4.24e+04 F_ACE 1.42e+09 Kp 6.3 R km 135332D OBT 2000:224:20:00:35 CTUVCDU 8930943 OBC s/w NRML FMT2_SSR CPEstat OBT 82411235.17 ONLVCDU 8930928 OBC Errs 0 OBSID 1792 EPState SUN SIM TTpos 72439 HETG Angle 80.2 PCADMODE NPNT RA 329.534 Bus V 30.55 SIM FApos -467 LETG Angle 4.5 PCONTROL NPNT Dec -30.324 Bus I 33.81 AOFSTAR GUID Roll 27.061 ACA Object FFFSSSSS Dither ENAB HRC-I HV ON ACA ImFunc TTTTTTTT Dith Yang 2.42 Yaw Rate 0.06 HRC-S HV OFF ACA CCD Temp -10.4 Dith Zang 0.64 Pitch Rate -0.11 OBSMode NEXT ACA Int Time 1.698 Roll Rate -0.12 Door OP UNAC AOACSTAT OK FSS SunBeta NSUN Door CL UNAC FSS Alfa -49.57 Batt 1 SOC 100.00% Avg HRMA Temp 70.63 FSS Beta -49.77 Batt 2 SOC 100.00% ACIS Stat7-0 64 Avg OBA Temp 50.34 SA Resolv 163.21 Batt 3 SOC 100.00% Cold Rad -120.7 OBA Tavg Fault NFLT SA Sun Pres ILLM Warm Rad -82.0 OBA Trng Fault NFLT +Y SA Amps 16.44 HRMA power 33.00 SCS 128 -Y SA Amps 17.03 EPHIN Geom LARG OBA power 182.50 SCS 129 +Y SA Temp 108.70 E150 4.2 SCS 130 -Y SA Temp 108.70 E300 0.1 Roll Mom. 4.467 E1300 0.0 Pitch Mom. -6.014 UpL Cmd Acc 34823 EPH A-Leak 0.1880 P4GM 2.0 Yaw Mom. -1.570 Cmd Rej A 102 EPH B-Leak 0.0360 P41GM 0.0 2) Status at 224:2029: PCAD MODE = NPNT NPNT CONTROL LAW FLAG = NPNT NPNT Stars: = 5 5 FIDS = 3 3 RA = 329.5332 deg 329.5332 DEC = -30.3242 deg -30.3242 ROLL = 27.06 deg 27.06 Format = 2 2 OBSID = 1792 1792 SIM FA = -467 -468 SIM TSC = 72439 72440 HETGA = 80.21 deg (OUT) OUT HETGB = 80.59 deg (OUT) OUT LETGA = 7.46 deg (IN) IN LETGB = 4.46 deg (IN) IN ACE Proton Flux = 46000 (2 hr avg in 130-214 keV proton channel) Fluence (130-214KeV) = 3.3E+8 LT 3.6E+8 Radiation Level OK Kp Index (Costello) = 6.7 LT 6 is OK HRC SP PS = OFF IM PS = ON SP Top Step = 77 Sp Bot Step = 89 Shield 1 HV = OFF Shield 2 HV = ON step 8 Valid Event Rate 1 = 36 Valid Event Rate 2 = 38 Shield Event Rates = 2800 ACIS FP Temp = -109.0 (correct - target == -110 for cal obs) Cold Radiator = -120.7 DEA Pwr = 45.0 DPA Pwr = 41.0 Science State = Science Active 3) Radiation alerts were issued for orbital fluence, 2-hour fluence and Kp today. These were due to the solar coronal mass ejections (CMEs) of Aug 9/10. However, no safing has been performed yet. Radiation levels will be watched and a telecon will be called at midnight tonight if the ACE 100-200 keV protons stay above 50,000 cts/s. 4) Quick Look data review (OK unless noted): ObsID Target SI Grat Comments -------------------------------------------------------- 1709 V1494 Aql ACIS-I 950 GX13+1 ACIS-I 1795 PKS 2155-304 ACIS-S/LETG 1797 PKS 2155-304 ACIS-S/LETG 1798 PKS 2155-304 ACIS-S/LETG 5) the FOT is currently rehearsing procedures for off-pointing the Chandra solar panels for the shallow lunar eclipse coming up in October.