See https://cxc.harvard.edu/mta/SOT_reports/sot-shift.html Shift L7951. Start at 118:13:00 GMT PLAN ---- Finish: Obsid: 25013 SI: HRC-S, LETG (25 ksec) Target: H1821+643 Then: 2021:118:18:05:12 Grating: NONE 2021:118:18:33:45 Obsid: 24611 SI: ACIS-S (20 ksec) Target: A1795 2021:119:00:32:22 Obsid: 24610 SI: ACIS-S (20 ksec) Target: A1795 2021:119:06:55:47 Grating: HETG 2021:119:07:43:36 Obsid: 24789 SI: ACIS-S (21 ksec) Target: NGC 1365 NOTES/ISSUES/PROBLEMS --------------------- From the 9am status meeting: 3 Supports completed in the last 24 hours (total time: 6.9 hours) 2 SSR dumps Radiation: Solar activity is expected to be very low with a chance for a C-class flares on days one, two, and three (28 Apr, 29 Apr, 30 Apr). MP: May0321 loads will be released today for a review tomorrow. Eng: No issues. GOT: No issues. Quick look data: ---------------- OBSID Target Instr Grat ----- ------ ----- ---- 22946 H1821+643 HRC-S LETG Next Comms: ----------- Support (GMT) BOT EOT Station Site Track time (local) --------------- ---- ---- --------- --------- ------------------------- 118/1205-1420 1305 1405 DSS-24 GOLDSTONE 0905-1005 EDT, Wed 28 Apr 118/1845-2100 1945 2045 DSS-36 CANBERRA 1545-1645 EDT, Wed 28 Apr 119/0100-0315 0200 0300 DSS-56 MADRID 2200-2300 EDT, Wed 28 Apr 119/1040-1255 1140 1240 DSS-24 GOLDSTONE 0740-0840 EDT, Thu 29 Apr 119/2245-0115 2345 0100 DSS-65 MADRID 1945-2100 EDT, Thu 29 Apr SNAPSHOT summary: ---------------- UTC 2021:118:02:54:02 (Apr28) f_ACE 2.29e+01 F_CRM 1.00e+00 Kp 1.0 R km 71158A OBT 2021:118:02:51:08 CTUVCDU 13108863 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 735965468.11 ONLVCDU 13108856 OBC Errs 0 OBSID 46392 EPState SUN SIM TTpos -99616 HETG Angle 77.96 PCADMODE NPNT RA 74.001 Bus V 28.20 SIM FApos -990 LETG Angle 76.46 PCONTROL NPNT Dec 64.002 Bus I 27.22 AOFSTAR GUID Roll 313.518 ACA Object SSSSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang -4.46 Yaw Rate -0.07 HRC-S HV ON ACA CCD Temp -10.4 Dith Zang -7.22 Pitch Rate 0.07 SHLD HV 0.0 ACA Int Time 1.698 Roll Rate -0.12 EVT RT 255 AOACSTAT OK FSS SunBeta SUN SHLD RT 0 FSS Alfa -0.40 Batt 1 SOC 100.00% Avg HRMA Temp 72.27 FSS Beta 33.13 Batt 2 SOC 100.00% ACIS Stat7-0 65 Avg OBA Temp 62.08 SA Resolv 56.67 Batt 3 SOC 100.00% Cold Rad -125.5 OBA Tavg Fault NFLT SA Sun Pres ILLM Warm Rad -84.4 OBA Trng Fault NFLT +Y SA Amps 13.53 RadMon DISA HRMA power 0.00 SCS 128 ACT -Y SA Amps 13.33 OBA power 35.10 SCS 129 ACT +Y SA Temp 112.35 SCS 130 ACT -Y SA Temp 112.04 Roll Mom. -1.385 SCS 131 ACT Pitch Mom. -2.456 SCS 132 ACT Ephin Temp 0.0000 UpLCmdAcc 16524 Yaw Mom. -6.136 SCS 133 ACT EIO Temp 0.0000 Cmd Rej A 149 PMTANKP 134.145 SCS 107 INAC EPH temp 152.81 IRU2G2 curr 112.80 M Unload MON IRU2G1 curr 96.00 Roll Bias 0.6123 TSC Move STOP Prop. line 03 90.80 Pitch Bias -2.6625 CTX B PWR 36.69 FA Move STOP Prop. line 04 101.95 Yaw Bias -1.5611 CTX B Volts 3.54 OTG Move DISA UTC 2021:118:12:58:01 (Apr28) f_ACE 2.28e+01 F_CRM 1.00e+00 Kp 0.0 R km 122391A Currently scheduled FPSI, OTG : HRC-S LETG Estimated Kp : 0.0 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 2.29e+01 GOES-R P4 flux, in RADMON P4GM units : 0.081 GOES-R P7 flux, in RADMON P41GM units : 0.018 GOES-R E > 2.0 MeV flux (p/cm^2-s-sr) : 491.0 Orbit Start Time : 2021:117:20:44:01 Geocentric Distance (km), Orbit Leg : 122164 A CRM Region : 3 (Magnetosphere) External Proton Flux (p/cm^2-s-sr-MeV) : 2.1214e+02 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 0.0000e+00 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 9.2460e+07 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 2.4983e+07