May_24_2000_L306.txt Shift M306 Start at 2000:144:16:30 GMT = 2000 May 24 12:30pm EST End 03:00pm EST SOT Lead M. Freeman SOT-SI SOT SC/ACA FOT-SI HRC-SI ACIS-SI OTHER Plan: complete OBSID 01729, G21.5-0.9 2000:145:07:09, 8.0 ks ACIS-I NONE then begin OBSID 788, long observation of NGC 5846 EVENTS DONE OBSID -------------- ---- ----- Start shift 1630 S/C status nominal (note 4) 1630 1729 LOS (status note 5) 1725 788 Noted high Orbital Fluence (note 1) 1835 End of Shift 1915 NOTES/ISSUES/PROBLEMS --------------------- 1. ACE Orbital fluence is 1.0e9 - AT THRESHOLD! (18:35 GMT) Low and medium energy proton flux has dropped from overnight peak but remains slightly elevated (see note 2). SOT consensus is that the current fluxes are tolerable and we are descending toward the normal rad protections for the magnetopause, so no action is warranted. 2. ACE 2 hr flux is 3.0e3 vs. threshold 5.0e4. 3. ACIS focal plane temperature was -119.7 at 13:23 GMT 4. Chandra's state at start of shift was: UTC 2000:145:16:31:01 (Wed May 24) f_ACE 3.58e+03 F_ACE 9.71e+08 R km 125111D OBT 2000:145:16:30:22 CTUVCDU 15799668 OBC s/w NRML FMT2_SSR CPEstat OBT 75573022.73 ONLVCDU 15799656 OBC Errs 0 OBSID 1729 EPState SUN SIM TTpos 79431 HETG Angle 79.8 PCADMODE NPNT RA 278.439 Bus V 30.55 SIM FApos -467 LETG Angle 78.3 PCONTROL NPNT Dec -10.658 Bus I 34.82 AOFSTAR GUID Roll 110.740 ACA Object FFFSSSSS Dither ENAB HRC-I HV ON ACA ImFunc TTTTTTTT Dith Yang 7.01 Yaw Rate -0.33 HRC-S HV OFF ACA CCD Temp -10.4 Dith Zang -5.68 Pitch Rate -0.12 OBSMode NEXT ACA Int Time 1.698 Roll Rate -0.14 Door OP UNAC AOACSTAT OK FSS SunBeta NSUN Door CL UNAC FSS Alfa 16.15 Batt 1 SOC 100.00% Avg HRMA Temp 70.58 FSS Beta -49.56 Batt 2 SOC 100.00% ACIS Stat7-0 64 Avg OBA Temp 50.66 SA Resolv 143.55 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 17.03 HRMA power 59.50 SCS 128 -Y SA Amps 17.43 EPHIN Geom LARG OBA power 167.70 SCS 129 +Y SA Temp 109.89 E150 419 SCS 130 -Y SA Temp 111.74 E300 34 Roll Mom. 14.791 E1300 5 Pitch Mom. -7.353 UpL Cmd Acc 34411 EPH A-Leak 0.1880 P4GM 0 Yaw Mom. -8.397 Cmd Rej A 147 EPH B-Leak 0.0320 P41GM 0 5. Status at LOS (manuevering): UTC 2000:145:17:25:02 (Wed May 24) f_ACE 4.46e+03 F_ACE 9.86e+08 R km 122419D OBT 2000:145:17:23:59 CTUVCDU 15812223 OBC s/w NRML FMT2_NORM CPEstat OBT 75576239.69 ONLVCDU 15812208 OBC Errs 0 OBSID 788 EPState SUN SIM TTpos 79431 HETG Angle 79.8 PCADMODE NMAN RA 226.693 Bus V 30.71 SIM FApos -467 LETG Angle 78.3 PCONTROL NPNT Dec 1.684 Bus I 31.02 AOFSTAR GUID Roll 212.554 ACA Object FFFSSSSS Dither ENAB HRC-I HV ON ACA ImFunc TTTNNNNN Dith Yang 5.01 Yaw Rate 11.38 HRC-S HV OFF ACA CCD Temp -10.4 Dith Zang 7.22 Pitch Rate -1.01 OBSMode NEXT ACA Int Time 1.698 Roll Rate 18.50 Door OP UNAC AOACSTAT OK FSS SunBeta NSUN Door CL UNAC FSS Alfa -49.63 Batt 1 SOC 100.00% Avg HRMA Temp 70.61 FSS Beta -49.78 Batt 2 SOC 100.00% ACIS Stat7-0 64 Avg OBA Temp 50.73 SA Resolv 153.17 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 15.07 HRMA power 104.30 SCS 128 -Y SA Amps 15.46 EPHIN Geom LARG OBA power 100.30 SCS 129 +Y SA Temp 109.89 E150 373 SCS 130 -Y SA Temp 110.20 E300 30 Roll Mom. 0.136 E1300 7 Pitch Mom. -10.972 UpL Cmd Acc 34418 EPH A-Leak 0.1840 P4GM 1 Yaw Mom. 15.271 Cmd Rej A 153 EPH B-Leak 0.0320 P41GM 0