Nov_23_2001_M855.txt Shift M855 Start at 2001:327:22:00:00 UTC = 2001 Nov 23 5:00pm EST End 2001 Nov 23 7:00pm EST SOT shift report 2001-11-23 M855 See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Nov_23_2001_M855.txt SOT Lead Robert Cameron SOT SC/ACA FOT-SI HRC-SI ACIS-SI OTHER Plan: - The NOV2101A load is stopped because of high radiation. The NOV2301A load has been uplinked to put Chandra in a good attitude for perigee passage, but science observing is on hold until radiation subsides. SCS 107 ran automatically at 327:0145 UT. The NOV2301A load was uplinked at 327:0809 UT. Radiation replan telecon at 327:2300UT (6pm EST). The telecon decided to pursue 2 options: (i) NOV2501 replan would restart with obsid 2813, which has severe time constraints. (ii) NOV2601 replan would restart with obsid 1880, after the next perigee. Load review for NOV2501 products is scheduled for 4pmEST tomorrow (day 328, Nov 24). Seq # ObsID Target start time SI Grat RA dec roll -------------------------------------------------------------------------------------------------- TBD ORBITAL EVENTS: 2001:326:12:42:52.715 317 EAPOGEE ORBIT APOGEE 2001:327:20:26:53.907 317 EPERIGEE ORBIT PERIGEE 2001:329:04:10:53.546 318 EAPOGEE ORBIT APOGEE 2001:330:11:54:23.905 318 EPERIGEE ORBIT PERIGEE 2001:331:19:39:00.329 319 EAPOGEE ORBIT APOGEE 2001:333:03:22:48.683 319 EPERIGEE ORBIT PERIGEE 2001:334:11:08:04.639 320 EAPOGEE ORBIT APOGEE 2001:335:18:52:22.197 320 EPERIGEE ORBIT PERIGEE 2001:337:02:36:49.264 321 EAPOGEE ORBIT APOGEE 2001:338:10:22:15.636 321 EPERIGEE ORBIT PERIGEE 2001:339:18:05:54.482 322 EAPOGEE ORBIT APOGEE 2001:341:01:51:06.084 322 EPERIGEE ORBIT PERIGEE 2001:342:09:34:21.745 323 EAPOGEE ORBIT APOGEE 2001:343:17:18:29.578 323 EPERIGEE ORBIT PERIGEE EVENTS DONE OBSID -------------- ---- ----- Start Shift 327:2200 AOS DSS-34 (Canberra 34m) 327:2215 61402 LOS DSS-34 (Canberra 34m) 327:2315 End of shift 328:0000 NOTES/ISSUES/PROBLEMS --------------------- 1) Chandra snapshot: UTC 2001:327:22:20:07 (Nov23) f_ACE 8.60e+03 F_CRM 0.00e+00 Kp 1.3 R km 32389A OBT 2001:327:22:19:39 CTUVCDU 16101631 OBC s/w NRML FMT2_EPS CPEstat NORM OBT 122941179.61 ONLVCDU 16101616 OBC Errs 0 OBSID 61402 EPState SUN SIM TTpos -99616 HETG Angle 79.46 PCADMODE NPNT RA 124.752 Bus V 30.08 SIM FApos -535 LETG Angle 77.96 PCONTROL NPNT Dec 35.502 Bus I 26.21 AOFSTAR GUID Roll 86.073 ACA Object SSSSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang 7.99 Yaw Rate 0.06 HRC-S HV ON ACA CCD Temp -10.4 Dith Zang 4.38 Pitch Rate -0.13 OBSMode NEXT ACA Int Time 1.698 Roll Rate -0.08 Door OP UNAC AOACSTAT OK FSS SunBeta SUN Door CL UNAC FSS Alfa -0.24 Batt 1 SOC 100.00% Avg HRMA Temp 70.63 FSS Beta -31.87 Batt 2 SOC 100.00% ACIS Stat7-0 67 Avg OBA Temp 51.13 SA Resolv 121.50 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 12.56 RadMon DISA HRMA power 32.70 SCS 128 INAC -Y SA Amps 13.53 EPHIN Geom SMAL OBA power 67.40 SCS 129 DISA +Y SA Temp 116.58 E150 145170.7 SCS 130 DISA -Y SA Temp 117.68 E300 22243.9 Roll Mom. 12.599 SCS 107 DISA E1300 859.8 Pitch Mom. -7.366 UpL Cmd Acc 11592 EPH A-Leak 1.0200 P4GM 14308.9 Yaw Mom. -11.153 Cmd Rej A 75 EPH B-Leak 0.5440 P41GM 3.6 Current Data: UTC 2001:327:22:20:07 (Nov23) f_ACE 8.60e+03 F_CRM 0.00e+00 Kp 1.3 R km 32389A Currently scheduled FPSI, OTG : HRC-S NONE Costello Kp : 1.33 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 8.60e+03 Orbit Start Time : 2001:327:20:29:00 Geocentric Distance (km), Orbit Leg : 32264 A CRM Region : 3 (Magnetosphere) External Proton Flux (p/cm^2-s-sr-MeV) : 0.00000000000e+00 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 0.00000000000e+00 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 0.00000000000e+00 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 0.00000000000e+00 2) Radiation: The Chandra radiation environment is high. ACE EPAM P3: 2 hr fluence is 6.3e7 vs. threshold 3.6e8. CRM-based orbital fluence is 0.0e0 vs. threshold 3.0e9. GOES-8 P2 rate = 597 and rising. GOES-8 P5 rate = 4.26 and falling. Thus predicted EPHIN P4GM and P41GM rates remain above RADMON thresholds. Chandra is in the magnetosphere. 3) Quick look data: ObsID Target SI Grat Comment ---------------------------------------------- 3363 V 410 TAU ACIS-S NONE ok.