To:sot_shift from: Dan Schwartz date: 14 Sep 01, 12:00noon EDT Subject: SOT shift report 2001-09-14 L785 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Sep_14_2001_L785.txt Shift L785. Start at 257:12:00 GMT = 08:00am 14 Sep EDT End 12:00 noon 14 Sep SOT Lead DAS (Times will be given in GMT on day 257.) PLAN ---- Continue running load SEP1001B. Doing ACIS-S/HETG observations of the galactic black hole candidate E1740.7-2942, OBSID 2491. HETG to be retracted at 258:00:46 Next Comms: 257:1250 to 1450 257:2040 to 2240 258:0320 to 0520 258:1300 to 1500 258:2230 to 2330 259:0710 to 0810 259:1725 to 1925 Orbital events: 2001:257:18:40:41.693 291 ORBIT APOGEE 2001:259:02:25:52.442 291 ORBIT PERIGEE 2001:260:10:08:37.117 292 ORBIT APOGEE 2001:261:17:52:25.226 292 ORBIT PERIGEE 2001:263:01:35:45.272 293 ORBIT APOGEE 2001:264:09:18:50.346 293 ORBIT PERIGEE 2001:265:17:02:37.520 294 ORBIT APOGEE EVENTS ------ Status at AOS, 257:12:51, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 265.962 deg Dec = -29.730 deg ROLL = 268.981 deg Format = 2 OBSID = 2491 E1740.7-2942 SIM FA = -467 SIM TSC = 72440 (ACIS-S, offset) HETG = IN ( 6.34 deg) LETG = OUT (77.96 deg) HRC-I HV is ON EPHIN Geom = LARG E1300 = 0.0 LT 10.0 (RADMON P4GM = 0.7 LT 300. Triggers) P41GM = 0.0 LT 8.47 A-leak = 1.0200 mu-a B-leak = 0.2280 mu-a Ascending through 129850 km. ACIS focal plane temperature -119.9. 14:52 LOS. Status essentially unchanged. Ascending through 137107 km. ACIS focal plane temperature -119.9. NOTES/ISSUES/PROBLEMS From the 9am status meeting: Two 26m supports, all SSR data dumps are current. SEP1701E loads have been approved. Will get formal signoff and start uploading at the 20:40 pass this afternoon. Radiation is high. Rates are about 10,000. Total attenuated dose is only ~4.4 E8 since HETG is in. We could tolerate rates up to 100,000 until HETG is removed at 00:46 tomorrow, and/or rates of ~20,000 for the subsequent 54ksec of this orbit with no grating. WE WILL CALL a telecon this afternoon for before the 4:20pm EDT pass, (unless the ACE rates nosedive down toward ~1000 before then.) Be alert for a page to sot_red_alert. The Draper parking lot at 1 Kendall will be closed tomorrow for paving. Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 2088 FAIRALL 9 254:23:49 ACIS-S HETG Looks good. 1022 NGC6624 255:22:35 ACIS-S HETG 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 -------------------------------------------------------