See http://cxc.harvard.edu/mta/SOT_reports/sot-shift.html Shift L7614. Start at 147:13:00 GMT PLAN ---- Return to science targeted for 149:0100z. NOTES/ISSUES/PROBLEMS --------------------- From the 9am status meeting: 13 Supports completed over the weekend (Total time: -> 36.4 hours) 13 SSR dumps Remarks: - Pass at 145/2010-2225: Safemode Entry at 145/14:17:30z. This comm will go up to and including the next DSS-54 comm - Pass at 146/1300-1745: Safemode Recovery Comm - Pass at 146/1910-2125: Safemode Recovery Comm - Pass at 146/2205-0250: Safemode Recovery Cont - Pass at 147/0900-1250: Normal Sun Mode Recovery Cont CAPs: 7 instances of CAP 1510, DSN Outage Deadman Load, Part 2 Only: 144/0116z, 144/1053z, 144/2048z, 145/0050z, 145/0830z, 145/1344z, 147/1140z. Radiation: Solar activity is expected to be very low on days one, two, and three (26 May, 27 May, 28 May). MP: Working on the eclipse loads, and back to a cooling attitude post-eclipse loads. Eng: On Sunday at the afternoon pass (2020:145 2110-2210z) Chandra was discovered to be in safe mode. The root cause was identified as due to an unintended interaction of commands causing the attitude and rate error monitor to trip. The transition was nominal and all systems functioned as expected. Yesterday and this morning Safe Mode and Normal Sun Mode recoveries were completed and currently we are tracking guide stars at a cooling attitude. ACIS long CTI CAP is running at the moment. The first eclipse of the season will be happening this evening at 2020:148:02:35:13. GOT: No issues. Quick look data: ---------------- None Next Comms: ----------- Support (GMT) BOT EOT Station Site Track time (local) --------------- ---- ---- --------- --------- ------------------------- 147/0900-1250 0945 1235 DSS-24 GOLDSTONE 0545-0835 EDT, Tue 26 May 147/1910-2125 2010 2110 DSS-26 GOLDSTONE 1610-1710 EDT, Tue 26 May 148/0215-0400 0300 0345 DSS-54 MADRID 2300-2345 EDT, Tue 26 May 148/1245-1500 1345 1445 DSS-24 GOLDSTONE 0945-1045 EDT, Wed 27 May 148/2010-2155 2055 2140 DSS-65 MADRID 1655-1740 EDT, Wed 27 May 148/2325-0140 0025 0125 DSS-65 MADRID 2025-2125 EDT, Wed 27 May SNAPSHOT summary: ---------------- UTC 2020:147:12:36:01 (May26) f_ACE 2.08e+01 F_CRM 1.00e+00 Kp 1.0 R km 99341D OBT 2020:147:12:33:28 CTUVCDU 281983 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 706883608.82 ONLVCDU 281976 OBC Errs 0 OBSID 62655 EPState SUN SIM TTpos -99616 HETG Angle 5.96 PCADMODE NPNT RA 217.833 Bus V 28.67 SIM FApos -467 LETG Angle 76.84 PCONTROL NPNT Dec -24.302 Bus I 21.86 AOFSTAR GUID Roll 282.000 ACA Object SSSSSSSS Dither DISA HRC-I HV ON ACA ImFunc TTTTTTTT Dith Yang 0.00 Yaw Rate -0.60 HRC-S HV OFF ACA CCD Temp -2.5 Dith Zang 0.00 Pitch Rate 0.26 SHLD HV 8.0 ACA Int Time 1.698 Roll Rate -0.99 EVT RT 0 AOACSTAT OK FSS SunBeta NSUN SHLD RT 18 FSS Alfa -49.57 Batt 1 SOC 100.00% Avg HRMA Temp 73.93 FSS Beta -49.72 Batt 2 SOC 100.00% ACIS Stat7-0 64 Avg OBA Temp 71.45 SA Resolv 156.65 Batt 3 SOC 100.00% Cold Rad -127.9 OBA Tavg Fault NFLT SA Sun Pres ILLM Warm Rad -86.9 OBA Trng Fault NFLT +Y SA Amps 11.21 RadMon ENAB HRMA power 0.00 SCS 128 DISA -Y SA Amps 10.44 OBA power 35.10 SCS 129 DISA +Y SA Temp 111.12 SCS 130 DISA -Y SA Temp 111.74 Roll Mom. 4.073 SCS 131 DISA Pitch Mom. -0.177 SCS 132 DISA Ephin Temp 0.0000 UpLCmdAcc 48661 Yaw Mom. 4.225 SCS 133 DISA EIO Temp 0.0000 Cmd Rej A 163 PMTANKP 119.757 SCS 107 INAC EPH temp 169.78 IRU1G2 curr 108.00 M Unload MON IRU2G1 curr 96.00 Roll Bias -2.9929 TSC Move STOP Prop. line 03 155.32 Pitch Bias 0.7637 CTX B PWR 36.61 FA Move STOP Prop. line 04 145.12 Yaw Bias -0.2477 CTX B Volts 3.56 OTG Move DISA UTC 2020:147:12:56:01 (May26) f_ACE 2.39e+01 F_CRM 1.00e+00 Kp 1.0 R km 97733D Currently scheduled FPSI, OTG : HRC-S HETG Estimated Kp : 1.0 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 2.39e+01 GOES-R P4 flux, in RADMON P4GM units : 0.097 GOES-R P7 flux, in RADMON P41GM units : 0.010 GOES-R E > 2.0 MeV flux (p/cm^2-s-sr) : 34.4 Orbit Start Time : 2020:145:08:43:01 Geocentric Distance (km), Orbit Leg : 97896 D CRM Region : 2 (Magnetosheath) External Proton Flux (p/cm^2-s-sr-MeV) : 6.2801e+02 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 0.0000e+00 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 8.0832e+08 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 3.2799e+07 Due to transition to GOES-16, what used to be P2 is now P4 and what used to be P5 is now P7 This message will disappear in 01/31/2021