SOT shift report, 24 Jan 2000, Shift M185 See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Jan_24_2000_M185.txt. Shift M185. Start at 020:30 GMT = 03:30pm 24 Jan EST End 06:30pm 24 Jan SOT Lead Robert Cameron Spac/Aspect FOT/Sci liason HRC ACIS (Times will be given in GMT on day 024. In general times are rough, not precise.) PLAN Continue running load JAN2300b. In radiation belts. ACIS CTI measurements after exiting at 025:00:25. NGC5139 observations will resume with OBSID 1519 at 025:04:43. Next Comms: 024:22:00 to 23:50 025:06:00 to 08:00 025:14:10 to 15:35 025:21:45 to 00:00 EVENTS Status at AOS, 024:22:03, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 0 RA = 201.701 deg DEC = -47.501 deg ROLL = 66.007 deg Format = 2 OBSID = 62206 (ACIS CTI) SIM FA = -535 SIM TSC = -99616 (HRC-S) HETG = OUT (80.6 deg) LETG = OUT (79.1 deg) Chandra snapshot at AOS: UTC 2000:024:22:03:02 (Mon Jan 24) f_ACE 1.16e+02 F_ACE 0.00e+00 R km 40230A OBT 2000:024:22:02:33 CTUVCDU 6779135 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 65138553.28 ONLVCDU 6779128 OBC Errs 0 OBSID 62206 EPState SUN SIM TTpos -99616 HETG Angle 80.6 PCADMODE NPNT RA 201.697 Bus V 30.08 SIM FApos -535 LETG Angle 79.1 PCONTROL NPNT Dec -47.501 Bus I 35.08 AOFSTAR GUID Roll 66.004 ACA Object SSSSSSSS Dither ENAB HRC-I HV ON ACA ImFunc TTTTTNNN Dith Yang -7.99 Yaw Rate 0.09 HRC-S HV OFF ACA CCD Temp -10.4 Dith Zang -3.38 Pitch Rate -0.07 OBSMode NEXT ACA Int Time 1.698 Roll Rate -0.17 Door OP UNAC AOACSTAT OK FSS SunBeta SUN Door CL UNAC FSS Alfa -0.03 Batt 1 SOC 100.00% Avg HRMA Temp 70.61 FSS Beta 4.23 Batt 2 SOC 100.00% ACIS Stat7-0 67 Avg OBA Temp 50.97 SA Resolv 85.24 Batt 3 SOC 100.00% Cold Rad -123.1 OBA Tavg Fault NFLT SA Sun Pres ILLM Warm Rad -82.0 OBA Trng Fault NFLT +Y SA Amps 16.84 HRMA power 65.30 -Y SA Amps 17.82 EPHIN Geom LARG OBA power 139.40 +Y SA Temp 116.58 E1300 1800 -Y SA Temp 116.95 P4GM 587776 Roll Mom. 5.286 P41GM 9 Pitch Mom. -15.003 UpL Cmd Acc 24358 A-Leak 0.5240 Yaw Mom. 6.264 Cmd Rej A 106 B-Leak 0.0800 Chandra snapshot at LOS: UTC 2000:024:23:51:01 (Mon Jan 24) f_ACE 9.73e+01 F_ACE 0.00e+00 R km 56623A OBT 2000:024:23:49:42 CTUVCDU 6804223 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 65144982.14 ONLVCDU 6804216 OBC Errs 0 OBSID 62206 EPState SUN SIM TTpos -99616 HETG Angle 80.6 PCADMODE NPNT RA 201.701 Bus V 30.40 SIM FApos -535 LETG Angle 79.1 PCONTROL NPNT Dec -47.497 Bus I 29.50 AOFSTAR GUID Roll 66.007 ACA Object SSSSSSSS Dither ENAB HRC-I HV ON ACA ImFunc TTTTTNNN Dith Yang 7.06 Yaw Rate -0.01 HRC-S HV OFF ACA CCD Temp -10.4 Dith Zang 0.75 Pitch Rate -0.03 OBSMode NEXT ACA Int Time 1.698 Roll Rate 0.05 Door OP UNAC AOACSTAT OK FSS SunBeta SUN Door CL UNAC FSS Alfa -0.08 Batt 1 SOC 100.00% Avg HRMA Temp 70.61 FSS Beta 4.17 Batt 2 SOC 100.00% ACIS Stat7-0 67 Avg OBA Temp 50.97 SA Resolv 85.24 Batt 3 SOC 100.00% Cold Rad -120.7 OBA Tavg Fault NFLT SA Sun Pres ILLM Warm Rad -82.0 OBA Trng Fault NFLT +Y SA Amps 13.91 HRMA power 78.10 -Y SA Amps 15.07 EPHIN Geom LARG OBA power 43.20 +Y SA Temp 116.22 E1300 12 -Y SA Temp 116.95 P4GM 7280 Roll Mom. 1.458 P41GM 0 Pitch Mom. -4.894 UpL Cmd Acc 24363 A-Leak 0.4120 Yaw Mom. 2.551 Cmd Rej A 108 B-Leak 0.0640 NOTES/ISSUES/PROBLEMS There was a 2pm IRU status telecon. The pointing stability of Chandra had degraded somewhat due to the change in performance of gyro 2 on January 16, but was still within specification and is currently returning to pre-Jan 16 values. More detailed analysis of IRU bias stability and Chandra pointing stability will be performed. Quick Look data review: OBSID Target Time Comment ----- ------ ---------- ------- 00461 3C 273 022:14:38 HRC-I. Image reconstruction being checked. 00414 NGC 5195 023:06:29 ACIS-S. ok.