See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Jul_01_2002_M1075.txt. Shift M1075. Start at 182:23:40 GMT = 07:40pm 01 Jul EDT End 9:00pm 01 Jul SOT Lead PPP (Times will be given in GMT on day 182.) ACIS Paul Plucinsky, Catherine Grant, Joe DePasquale PLAN ---- Observe the beginning of OBSID 3662, which is a CAL observation of Her X-1. ACIS is concerned if the source ends up on a FI CCD or if dither were to fail with the source on S3. SUMMARY: ---------- There were problems with the DSN station 16. First there was a power outage at the station. Second, after we had come up on the spacecraft for only two minutes, there was a hydraulic failure on the antenna. We then switched to DSS-66 and had intermittent TLM. However, ACIS got enough TLM to verify that Her X-1 was indeed on S3 and the count rate was about as expected. So, ACIS is safe,the observation is good, and the load will continue. 1) Detailed Timeline GMT 182:23:47 AOS on DSS-16 182:23:49 ACIS and OC confirm that the SIM is at the correct position (79111) and that the spacecraft was dithering. 183:00:06 OC gets contingency time on DSS 66 183:00:13 AOS on DSS-66 183:00:16 Catherine confirms that there is an image of a bright source on S3. 183:00:17 count rate on S3 appears to be about 20 c/s, FI CCDs look low, about 5 cts/s 183:00:23 count rate on S3 and the FI CCDs appears to be stable 183:00:30 OC starts a dump 183:00:45 S3 is averaging 19 cts/s 183:01:00 LOS on DSS-66 3) Chandra state at the beginning of the Pass 182:23:48 UTC 2002:182:23:51:18 (Jul 1) f_ACE 2.47e+02 F_CRM 4.18e+07 Kp 1.7 R km 108974A OBT 2002:182:23:49:13 CTUVCDU 6414079 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 141954553.43 ONLVCDU 6414064 OBC Errs 0 OBSID 3662 EPState SUN SIM TTpos 79111 HETG Angle 79.46 PCADMODE NPNT RA 254.487 Bus V 30.40 SIM FApos -467 LETG Angle 77.96 PCONTROL NPNT Dec 35.370 Bus I 29.75 AOFSTAR GUID Roll 207.081 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang 7.58 Yaw Rate 0.07 HRC-S HV ON ACA CCD Temp -10.4 Dith Zang -7.57 Pitch Rate -0.14 OBSMode NEXT ACA Int Time 1.698 Roll Rate -0.09 Door OP UNAC AOACSTAT OK FSS SunBeta SUN Door CL UNAC FSS Alfa -0.35 Batt 1 SOC 100.00% Avg HRMA Temp 70.58 FSS Beta -26.81 Batt 2 SOC 100.00% ACIS Stat7-0 64 Avg OBA Temp 51.21 SA Resolv 116.66 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 14.30 RadMon ENAB HRMA power 121.70 SCS 128 ACT -Y SA Amps 15.07 EPHIN Geom LARG OBA power 100.30 SCS 129 ACT +Y SA Temp 108.97 E150 1.5 SCS 130 ACT -Y SA Temp 109.58 E300 0.0 Roll Mom. -3.735 SCS 107 INAC E1300 0.0 Pitch Mom. 4.132 UpL Cmd Acc 5039 EPH A-Leak 1.0200 P4GM 0.0 Yaw Mom. -5.920 Cmd Rej A 129 EPH B-Leak 0.5200 P41GM 0.0 4) Chandra state at the end of the Pass 184:01:00 UTC 2002:183:00:59:05 (Jul 2) f_ACE 2.32e+02 F_CRM 4.45e+07 Kp 1.7 R km 112625A OBT 2002:183:00:58:39 CTUVCDU 6430335 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 141958719.04 ONLVCDU 6430320 OBC Errs 0 OBSID 3662 EPState SUN SIM TTpos 79111 HETG Angle 79.46 PCADMODE NPNT RA 254.488 Bus V 30.55 SIM FApos -467 LETG Angle 77.96 PCONTROL NPNT Dec 35.372 Bus I 26.46 AOFSTAR GUID Roll 207.081 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang 1.66 Yaw Rate -0.13 HRC-S HV ON ACA CCD Temp -10.4 Dith Zang -4.03 Pitch Rate -0.02 OBSMode NEXT ACA Int Time 1.698 Roll Rate -0.09 Door OP UNAC AOACSTAT OK FSS SunBeta SUN Door CL UNAC FSS Alfa -0.30 Batt 1 SOC 100.00% Avg HRMA Temp 70.58 FSS Beta -26.80 Batt 2 SOC 100.00% ACIS Stat7-0 64 Avg OBA Temp 51.21 SA Resolv 116.66 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 12.76 RadMon ENAB HRMA power 104.00 SCS 128 ACT -Y SA Amps 13.33 EPHIN Geom LARG OBA power 100.30 SCS 129 ACT +Y SA Temp 108.70 E150 0.8 SCS 130 ACT -Y SA Temp 109.28 E300 0.0 Roll Mom. -3.817 SCS 107 INAC E1300 0.0 Pitch Mom. 3.869 UpL Cmd Acc 5048 EPH A-Leak 1.0200 P4GM 0.0 Yaw Mom. -5.601 Cmd Rej A 136 EPH B-Leak 0.6440 P41GM 0.0