To:sot_shift from: Dan Schwartz date: 26 Oct 01, 12:00noon EDT Subject: SOT shift report 2001-10-26 L827 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Oct_26_2001_L827.txt. Shift L827. Start at 299:12:00 GMT = 08:00am 26 Oct EDT End 12:00 noon 26 Oct SOT Lead DAS (Times will be given in GMT on day 299.) PLAN ---- Continue with instruments safed for high radiation, no observations being conducted. We plan to resume observations tomorrow with obsid 1956, at roughly 300:1100 No comm this shift. Next Comms: 299:1800 to 1900 299:2315 to 0015 300:1330 to 1430 300:0415 to 0615 300:2030 to 2130 301:0545 to 0645 301:1320 to 1420 301:2340 to 0040 Orbital events: 2001:300:02:02:59.615 307 ORBIT APOGEE 2001:301:03:17:33.488 307 ELECTRON1 RADIATION ENTRY0 2001:301:09:46:33.612 307 ORBIT PERIGEE 2001:302:17:30:39.098 308 ORBIT APOGEE 2001:304:01:13:51.942 308 ORBIT PERIGEE 2001:305:08:58:32.407 309 ORBIT APOGEE 2001:306:16:42:15.779 309 ORBIT PERIGEE 2001:308:00:27:00.241 310 ORBIT APOGEE EVENTS ------ Status at LOS, 299:08:59, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 7 FIDS = 0 RA = 60.000 deg Dec = 4.001 deg ROLL = 72.249 deg Format = 2 OBSID = 61427 SIM FA = -467 SIM TSC = -99616 (HRC-S) HETG = OUT (79.46 deg) LETG = OUT (77.96 deg) HRC-I HV is ON EPHIN Geom = LARG E1300 = 0.1 LT 10.0 (RADMON P4GM = 2.5 LT 300. Triggers) P41GM = 0.0 LT 8.47 A-leak = 0.6320 mu-a B-leak = 0.1200 mu-a Ascending through 108654 km. ACIS focal plane temperature -119.9. NOTES/ISSUES/PROBLEMS Due to high solar radiation, "SCS 107 was run to safe the science instruments and stop the on-board loads at 2001:298:23:17." ACE fluxes were 35000-40000, so that 2.6e9 fluence could have accumulated IF we had performed just the first observation and then stopped the load at the next comm. Because this was anticipated prior to the pass, FOT/MP started work early and made a rebuild of next week's loads incorporating the final observation, obsid 1956 of SN1998BW, from the present schedule. This is now planned to resume tomorrow morning. NOTE THAT there was another CME yesterday, which will hit us Oct 27 or 28. Note that we change to standard time at 2am EDT Sunday morning, 301:06:00 GMT. At that instant the time becomes 1am EST. We will subsequently need to add 5 hours to local time, EST, to get GMT. From the 9am status meeting: Two supports, no uplinks. Ran CAP 593 to activate SCS 107 and safe the science instruments for high levels of soft protons. We currently continue running under OBSID 61427, which was used for ACIS CTI measurement. The loads for next week have been rebuilt to resume on Saturday, including the last observation from the OCT2301A load. This new schedule is called OCT2801A. Products are out for a load review today at 2pm EDT. Uplink is planned for the contact at 2315GMT today, with a final opportunity at the 300:0415 comm. CAP 675 must be run to re-enable SCS 107. Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 2484 CHVC125 298:01:34 ACIS-S NONE Target not visible 3035 SDSS094108+594725 298:08:45 ACIS-S NONE Target not visible ------------------------------------------------------- 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 -------------------------------------------------------