To:sot_shift from: Dan Schwartz date: 28 Jun 01, 12:00noon EDT Subject: SOT shift report 2001-06-28 L707 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Jun_28_2001_L707.txt. Shift L707. Start at 179:12:00 GMT = 08:00am 28 Jun EDT End 12:00 noon 28 Jun SOT Lead DAS (Times will be given in GMT on day 179.) PLAN ---- Continue running load JUN2501B. In perigee passage. Then do OBSID 2089, ACIS-S/HETG observation of the AGN NGC 4593 for the next day. Next Comms: 179:13:00 to 15:00 179:23:15 to 00:15 180:07:00 to 09:00 180:16:40 to 17:40 181:02:00 to 03:00 181:11:30 to 12:30 181:16:15 to 17:15 182:02:15 to 03:15 182:12:00 to 14:00 182:23:00 to 23:55 Orbital events: 2001:179:18:16:43.727 261 PERIGEE 2001:181:02:00:23.400 262 APOGEE 2001:182:09:44:05.319 262 PERIGEE 2001:183:17:28:11.097 263 APOGEE 2001:185:01:12:31.556 263 PERIGEE 2001:186:08:56:16.170 264 APOGEE EVENTS ------ Status at LOS, 179:05:59, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 174.750 deg Dec = -37.723 deg ROLL = 245.273 deg Format = 2 OBSID = 2094 NGC 3783 SIM FA = -467 SIM TSC = 74423 (ACIS-S) HETG = IN ( 6.34 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 = 1.0200 mu-a B-leak = 0.2320 mu-a Descending through 100224 km. ACIS focal plane temperature -119.7. 13:15 AOS Status at AOS, 179:13:15, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 8 FIDS = 0 RA = 114.997 deg Dec = -55.002 deg ROLL = 196.294 deg Format = 2 OBSID = 61569 NGC 3783 SIM FA = -467 SIM TSC = -99616 (ACIS-S) HETG = IN ( 6.34 deg) LETG = OUT (78.34 deg) HRC-S HV is ON EPHIN Geom = SMall E1300 = 34.0 LT 10.0 (RADMON P4GM = 1739.8 LT 300. Triggers) P41GM = 0.0 LT 8.47 disabled) A-leak = 1.0200 mu-a B-leak = 0.2280 mu-a Descending through 57897 km. ACIS focal plane temperature -119.9. 15:02 LOS Status essentially unchanged. Ephin rates are higher. Descending through 43587 km. ACIS focal plane temperature -119.9. NOTES/ISSUES/PROBLEMS From the 9am status meeting: Two supports yesterday. The ground station is having CDR problems getting data to us, so while they re-try, we will redump the SSR. Last load segment of JUN2501B was uplinked, on-board loads are good until 183:00:37. There will be a VCDU rollover tomorrow at 180:15:46. Hardware problems with OFLS 1 RAID caused scheduling delays yesterday, until it could be set up on the 3rd string. A JUL0201B schedule has been created and products will be out soon. Load review planned for 3 or 3:30pm today -- following the FDB. RAID problem was an "abnormal" disk failure, i.e., didn't indicate which disk had failed. SGI will be in this morning to diagnose. ASVT testing yesterday developed techniques to get the spacecraft into the Normal Sun Mode. Today will exercise the procedure to get out of NSM. Lockheed is here today for discussion of the data system migration. One of the unsung heroes behind the ACIS success has been Andy Northrup. Andy was personally responsible for turning almost all of the ACIS procedures into FOT procedures which could be run on Chandra. He stepped up to the previously unrecognized job of being the science instrument liaison engineer. Recently, Andy has been the lead engineer on developing the fault trees and procedures to respond to the unlikely occurrence of a failed SIM translation to protect ACIS during a radiation belt transit. Tomorrow will be Andy's last day, before leaving for graduate school at UT-Austin. We wish him success and satisfaction. Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 2094 NGC 3783 177:10:17 ACIS-S HETG First 56 of 168 Ksec. 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 -------------------------------------------------------