To:sot_shift from: Dan Schwartz date: 09 May 03, 12:00noon EDT Subject: SOT shift report 2003-05-09 L1387 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/May_09_2003_L1387.txt. Shift L1387. Start at 129:13:00 GMT = 08:00am 09 May EDT End 12:00 noon 09 May SOT Lead DAS (Times will be given in GMT on day 129.) PLAN ---- No load currently running. Plan to uplink MAY0903B to resume observing program. Will pick up with ACIS-S obsid 3795 of the low-mass X-ray binary and neutron star burster MXB 1659-298. Next Comms: 129:1300 to 1420 129:2010 to 2210 130:0500 to 0600 130:1315 to 1415 130:2035 to 2235 131:0600 to 0700 131:1220 to 1420 131:2310 to 0110 132:0300 to 0455 132:1040 to 1240 132:1625 to 2025 132:2025 to 2225 133:0240 to 0440 133:1055 to 1155 133:2030 to 2115 Orbital events: 2003:129:09:10:33.549 518 EPERIGEE ORBIT PERIGEE 2003:130:16:53:52.813 519 EAPOGEE ORBIT APOGEE 2003:132:00:37:54.006 519 EPERIGEE ORBIT PERIGEE 2003:133:08:21:30.091 520 EAPOGEE ORBIT APOGEE 2003:134:16:04:43.547 520 EPERIGEE ORBIT PERIGEE 2003:135:23:48:26.259 521 EAPOGEE ORBIT APOGEE 2003:137:07:32:18.575 521 EPERIGEE ORBIT PERIGEE 2003:138:15:15:27.946 522 EAPOGEE ORBIT APOGEE 2003:139:23:00:09.669 522 EPERIGEE ORBIT PERIGEE EVENTS ------ Status at LOS, 129:11:33, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 0 RA = 262.100 deg Dec = -14.289 deg ROLL = 98.807 deg Format = 2 OBSID = 4063 (State at SCS 107 trip) SIM FA = -467 SIM TSC = -99616 (HRC-S) DITHER = ENAB HETG = IN ( 6.34 deg) LETG = OUT (77.96 deg) HRC-I HV is ON EPHIN Geom = SMAL E150 = 144390.2 E300 = 21630.7 E1300 = 1548.8 LT 10.0 (RADMON P4GM = 10601.6 LT 300. Disabled) P41GM = 8.4 LT 8.47 A-leak = 1.0200 mu-a B-leak = 0.2560 mu-a Ascending through 38712 km. ACIS focal plane temperature -119.7. 13:10 AOS. Status is essentially unchanged. EPHIN geom is LARG and rates are substantially lower. Ascending through 48516 km, ACIS focal plane temperature -119.9. Status at LOS, 129:11:33, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 7 FIDS = 0 RA = 289.598 deg Dec = -24.800 deg ROLL = 96.143 deg Format = 2 OBSID = 60747 for ACIS CTI SIM FA = -467 SIM TSC = -99616 (HRC-S) DITHER = ENAB HETG = IN ( 6.34 deg) LETG = OUT (77.96 deg) HRC-I HV is ON EPHIN Geom = LARG E150 = 1.5 E300 = 0.1 E1300 = 0.0 LT 10.0 (RADMON P4GM = 0.0 LT 300. Disabled) P41GM = 0.0 LT 8.47 A-leak = 1.0200 mu-a B-leak = 0.2120 mu-a Ascending through 55621 km. ACIS focal plane temperature -119.7. NOTES/ISSUES/PROBLEMS Only obsid 3505, a 14.8 ks observation of SCO X-1, was lost due to the SCS 107 shutdown. However, we have also choosen to reduce the observations for the final orbit of this week by about two hours to allow extra margin against radiation shutdown. From the 9am status meeting: Four supports over the last day, one added. Some problems with DSS-66 and DSS-16. Uplinked the MAY0903B loads to resume the observing program. Ran CAP 675 to re-enable SCS 107, and CAP 820 to disable the autonomous momentum dump. The MAY0903 loads have allowed 13h15m pad time prior to perigee passage on entry. MAY1203 will be redone, and MAY1903 will be planned allowing the same margin. MAY2603 is TBD pending further discussion. MAY1203D products expected out this morning for an email review today. IRU A1 current continues noisy and high. ASVT testing today for revised IRU swap products. (We could use existing, tested and approved products if we were forced to a near term swap.) Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 4063 PDS 456 127:03:49 ACIS-S HETG Looks good 4114 F17208-0014 127:00:47 ACIS-S NONE Looks good ------------------------------------------------------- Dan Schwartz, MS #3 das@head-cfa.harvard.edu phone: (617)495-7232 FAX: (617)495-7356 cell phone: (617)512-5627 pager: 877-693-7198 PIN 693-7198 or e-mail 6937198@archwireless.net -------------------------------------------------------