To:sot_shift from: Dan Schwartz date: 28 Feb 01, 12:00noon EST Subject: SOT shift report 2001-02-28 L587 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Feb_28_2001_L587.txt. Shift L587. Start at 59:13:00 GMT = 08:00am 28 Feb EST End 12:00 noon 28 Feb SOT Lead DAS (Times will be given in GMT on day 59. In general times are rough, not precise.) PLAN ---- Continue running load FEB2601c. The entire orbit will be OBSID 2091, an ACIS-S/HETG observation of NGC 3783, simultaneous with HST/STIS to study the X-ray & UV absorbers. During the subsequent perigee passage we will do the monitor window acquisition test and ACA dark field calibration. Next Comms: 059:13:00 to 14:00 059:22:00 to 23:00 060:06:20 to 07:20 060:11:00 to 15:50 Dark Field calibration 060:23:00 to 00:00 061:08:00 to 09:00 061:15:45 to 17:45 062:01:45 to 03:45 062:06:20 to 08:20 062:13:25 to 14:50 062:21:40 to 23:30 063:08:10 to 10:10 063:14:00 to 15:00 063:23:10 to 00:10 Orbital events: 2001:060:18:16:05.507 216 ORBIT PERIGEE ACA operations. 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 AOS, 059:13:01, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 174.752 deg Dec = -37.758 deg ROLL = 19.218 deg Format = 2 OBSID = 2091 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 = 0.4 LT 300. Triggers) P41GM = 0.0 LT 8.47 A-leak = 0.7640 mu-a B-leak = 0.1400 mu-a Descending through 140367 km. 13:59 LOS Status essentially unchanged. Descending through 139810 km. ACIS focal plane temperature -119.7. P4GM = 0.0 NOTES/ISSUES/PROBLEMS From the 9am status meeting: 3 supports, last segment of FEB2601c load was uplinked. On-board loads good until 063:04:30. Tomorrow at 6am starts a 4.83 hr support during which the monitor window workaround will be tested (via stored command load) and the dark current calibration performed. Rob C, Tom A, and Eric M on console. Load review for MAR0501 yesterday went well, identified some problems with continuity which have been fixed in the MAR0501b products which have been sent out for load review at 2pm today. CSC has identified the problem with long gaps in the 2 week schedule as arising from a fixed size array in their OFLS code. When this array is filled, the code cannot examine any more possibilities. This problem could show up in a one week schedule which had large numbers of OR/ER's. It is said to be minor patch fix, more definite plans will be made in tomorrow's weekly telecon. We are roughly 2 weeks behind what we thought our 9.1 schedule would be. Went through longest eclipse of this season yesterday, all performance was nominal. We are in a series of medium eclipses now. Next week we'll upload a patch to do a short eclipse, the final one of the season. email from Jeff Shirer yesterday, with actual contact times as revised by Ken Gage, reports: "Ken was able to get us the requested comm for the OTG patch uplink and testing. They are: Monday, Ap 2, 11:25 - 15:25 GMT (6:25 a.m. - 10:25 a.m. EST) Thursday, Ap 5, 03:30 - 08:30 GMT (10:30 p.m. (4/4) - 3:30 a.m. (4/5) EST) Saturday, Ap 7, 19:05 - 01:05 GMT (2:05 p.m. - 8:05 p.m. EST) Ken is trying to get a better time of day for the second support, when we will be doing the flight test." Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 02090 NGC 3783 055:19:01 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 -------------------------------------------------------