See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Oct_17_2001_M818.txt. Shift M818. Start at 290:17:45 GMT = 02:45pm 17 Oct EDT End 06:00pm 17 Oct SOT Lead Mark Freeman (Times will be given in GMT on day 290.) PLAN ---- Perform CTI measurements surrounding perigee passage, then resume science with OBSID 1602, the GPS quasar Q0615+820, on day 291:03:16. Radiation environment is currently benign, although there continue to be dire warnings from the space weather folks. Today's: "Another and much more intense region is rotating into view at the southeast limb today, this region could be capable of major flaring." Next Comms: 290:2110 to 2310 291:0700 to 0900 291:1655 to 1855 292:0400 to 0640 292:1640 to 1840 292:2325 to 0125 293:0525 to 0625 293:1155 to 1340 293:2010 to 2110 294:0300 to 0500 294:1215 to 1315 294:2200 to 2300 Orbital events: 2001:290:14:17:14.151 303 ELECTRON1 RADIATION ENTRY0 2001:290:19:56:27.978 303 ORBIT PERIGEE 2001:291:00:23:14.151 304 ELECTRON1 RADIATION EXIT0 2001:292:03:40:23.730 304 ORBIT APOGEE 2001:293:04:56:09.891 304 ELECTRON1 RADIATION ENTRY0 2001:293:11:23:43.788 304 ORBIT PERIGEE EVENTS TIME OBSID ------ -------- ----- Start shift 290:1845 AOS (DSS-46) 290:2110 Status of Chandra nominal (note 1) 290:2117 61437 End shift 290:2200 LOS (planned) 290:2310 NOTES/ISSUES/PROBLEMS --------------------- (1) Chandra status just after AOS: UTC 2001:290:21:16:19 (Oct17) f_ACE 8.89e+01 F_CRM 0.00e+00 Kp 1.3 R km 28437A OBT 2001:290:21:14:17 CTUVCDU 3611007 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 119740457.06 ONLVCDU 3610992 OBC Errs 0 OBSID 61437 EPState SUN SIM TTpos -99616 HETG Angle 79.46 PCADMODE NPNT RA 129.002 Bus V 29.93 SIM FApos -467 LETG Angle 77.96 PCONTROL NPNT Dec 35.001 Bus I 34.06 AOFSTAR GUID Roll 72.632 ACA Object SSSSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang 6.85 Yaw Rate -0.12 HRC-S HV ON ACA CCD Temp -10.4 Dith Zang 5.16 Pitch Rate 0.24 OBSMode NEXT ACA Int Time 1.698 Roll Rate -0.08 Door OP UNAC AOACSTAT OK FSS SunBeta SUN Door CL UNAC FSS Alfa -0.18 Batt 1 SOC 100.00% Avg HRMA Temp 70.58 FSS Beta 7.25 Batt 2 SOC 100.00% ACIS Stat7-0 67 Avg OBA Temp 51.37 SA Resolv 82.21 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 16.44 RadMon DISA HRMA power 130.10 SCS 128 ACT -Y SA Amps 17.43 EPHIN Geom SMAL OBA power 105.60 SCS 129 ACT +Y SA Temp 113.89 E150 1598439.0 SCS 130 ACT -Y SA Temp 114.51 E300 6.0 Roll Mom. 3.745 SCS 107 INAC E1300 2.2 Pitch Mom. 17.715 UpL Cmd Acc 16875 EPH A-Leak 1.0200 P4GM 15609.8 Yaw Mom. -1.483 Cmd Rej A 111 EPH B-Leak 0.2640 P41GM 212.1 (2) Current Radiation Situation (inside magnetosphere, rad safed): UTC 2001:290:21:16:19 (Oct17) f_ACE 8.89e+01 F_CRM 0.00e+00 Kp 1.3 R km 28437A Currently scheduled FPSI, OTG : HRC-S NONE Costello Kp : 1.33 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 8.89e+01 Orbit Start Time : 2001:290:19:59:00 Geocentric Distance (km), Orbit Leg : 28110 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 (3) No quick-look data today.