To:sot_shift from: Dan Schwartz date: 26 Feb 01, 12:00noon EST Subject: SOT shift report 2001-02-26 L585 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Feb_26_2001_L585.txt. Shift L585. Start at 57:13:00 GMT = 08:00am 26 Feb EST End 12:00 noon 26 Feb SOT Lead DAS (Times will be given in GMT on day 57.) PLAN ---- Continue running load FEB2201b. Finish OBSID 2090, ACIS-S/HETG observation of NGC 3783, simultaneous with HST/STIS, to study the X-ray & UV absorbers. Then perform CTI measurements around the perigee passage, transitioning to load FEB2601c. Next Comms: 057:14:45 to 15:45 058:00:00 to 02:00 058:10:00 to 11:00 058:20:00 to 21:00 059:02:55 to 04:55 059:13:00 to 14:00 059:22:00 to 23:00 Orbital events: 2001:058:02:48:02.141 215 ORBIT PERIGEE 2001:059:10:32:11.372 216 ORBIT APOGEE 2001:060:18:16:05.507 216 ORBIT PERIGEE 2001:062:02:00:38.395 217 ORBIT APOGEE 2001:063:09:45:27.201 217 ORBIT PERIGEE 2001:064:17:29:28.632 218 ORBIT APOGEE 2001:066:01:14:57.917 218 ORBIT PERIGEE 2001:067:08:58:01.308 219 ORBIT APOGEE 2001:068:16:43:00.267 219 ORBIT PERIGEE EVENTS ------ Status at LOS, 057:07:37, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 174.750 deg Dec = -37.759 deg ROLL = 21.949 deg Format = 2 OBSID = 2090 NGC 3783 SIM FA = -467 SIM TSC = 74423 (ACIS-S) HETG = IN ( 6.71 deg) LETG = OUT (78.34 deg) HRC-S HV is ON EPHIN Geom = LARG E1300 = 0.0 LT 10.0 (RADMON P4GM = 0.0 LT 300. Triggers) P41GM = 0.0 LT 8.47 A-leak = 0.7680 mu-a B-leak = 0.1400 mu-a Descending through 125169 km. ACIS focal plane temperature -119.7. Status at AOS, 057:14:48, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 174.749 deg Dec = -37.762 deg ROLL = 21.950 deg Format = 2 OBSID = 2090 NGC 3783 SIM FA = -467 SIM TSC = 74423 (ACIS-S) HETG = IN ( 6.71 deg) LETG = OUT (78.34 deg) HRC-S HV is ON EPHIN Geom = LARG E1300 = 0.0 LT 10.0 (RADMON P4GM = 2.5 LT 300. Triggers) P41GM = 0.0 LT 8.47 A-leak = 0.7520 mu-a B-leak = 0.1360 mu-a Descending through 99979 km. ACIS focal plane temperature -119.5. 14:45 LOS. Status essentially unchanged. Descending through 95494 km. ACIS focal plane temperature -119.5. P4GM rate is 5.4. NOTES/ISSUES/PROBLEMS From the 9am status meeting: Over the weekend, 8 ground supports dumped all stored data. Uploaded two command segments, on-board load good until 060:12:01. FOT mission planning is working on changes to the current FEB2601c load to restore the HDF-N time lost to the TOO last week, and for a gamma ray burst TOO, coordinated followup with HST of last week's TOO. The plan is to incorporate these new observations on March 4, and move the start of the MAR0501 load earlier by one day. This would presumeably postpone the HRC-I calibration observations of COMA and NGC 2516. Load review at 2pm EST today. There are still issues with the testing of OFLS 9.1. Problems exist with being able to fill gaps in the schedule. We are progressing nominally through the eclipse season. The longest eclipse, 49.7 minutes, occurs tomorrow, at 03:51 GMT. This is number 7 of 11 this season. GOT plans to replace the recalled power supplies on SGI servers tomorrow, during the 10 hour gap between passes. The dark current measurement and monitor window test are scheduled for Thursday, 6 to 11 am EST. A CAP review will be held tomorrow, at 1pm EST. ACIS telecon at 4pm EST today. Meet-me line will be: 405-244-5060, passcode 1159#. Slot 7 has a warm pixel of ~170 counts, at about pixel -436,-411. Lower level warm pixels, in slot 6. Ground station (Goldstone, DSS-24) reports that antenna was set for incorrect bit rate (set too high). But data was apparently being received correctly. We receive data at the expected rate of 32 Kbps, and it doesn't hurt if the rate is set higher. (A rate set at lower than 32 Kbps would cause data loss.) Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 02233 HDF-N 2001:053:04:16 ACIS-I Looks good 02423 HDF-N 2001:054:07:16 ACIS-I 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 -------------------------------------------------------