Apr_04_2001_L622.txt Shift L622 Start at 2001:094:11:30:00 GMT = 2001 Apr 4 7:30am EDT End 2001 Apr 4 10:00am EDT SOT shift report 2001-04-04 L622 See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Apr_04_2001_L622.txt SOT Lead Bill Podgorski SOT SC/ACA FOT-SI HRC-SI ACIS-SI OTHER Plan: - Loads not currently running due to yesterday's RADMON trip. Could not uplink and restart loads last night due to continued high radiation. Case 1 (APR04) loads not used. Replan APR0501 (review at 11am) segment 1 must be uplinked during the next COMM (3pm - 6pm EDT) to perform a maneuver to a safe attitude for perigee passage. Rest of load contains observations and may be uplinked depending on radiation. Telecon at 2:30pm to go over this. Radiation levels are high. ACE soft proton flux is 100,000 - 200,000 and erratic. EPHIN rates at end of last pass were: Rate Limit E1300 20 ( 10) P4GM 200-300 ( 300) P41GM 3 (8.47) COMM: 094 0830 0930 1030 1045 DSS-24 ( 5:30am 6:30am EDT Wed Apr 4) 094 1800 1900 2200 2215 DSS-34 ( 3:00pm 6:00pm EDT Wed Apr 4) <--- Uplink APR0501, do CTI 095 0305 0330 0530 0540 DSS-27 (11:30pm 1:40am EDT Wed/Thu Apr 4/5) (before 2100) 095 1120 1200 1400 1410 DSS-16 ( 8:00am 10:00am EDT Thu Apr 5) 095 2100 2200 2300 2315 DSS-54 ( 6:00pm 7:00pm EDT Thu Apr 5) Planned Activity in APR0501 load (Case 2 from yesterday): Seq # ObsID It Target start time SI Grat RA dec roll slew ---------------------------------------------------------------------------------------------------------- ---- T_E29 CAL-ER 2001:094:22:20:00.000 1.0 -- -- 278.0000 28.0000 98.11 0.01 ---- GG_29 00 CAL-ER 2001:095:02:34:30.000 3.6 -- -- 181.5000 23.8000 204.04 138.66 ---- T_X30 00 CAL-ER 2001:095:06:45:44.965 10.0 -- -- 170.5000 23.4000 221.18 16.22 800128 01660 00 V 1121+2327 2001:095:10:00:24.965 72.1 ACIS-I NONE 170.2045 23.4363 221.64 0.44 500177 02000 00 CRAB NEBULA 2001:096:06:35:28.982 22.5 ACIS-S NONE 83.6141 22.0331 272.06 79.05 ORBITAL EVENTS: 2001:095:03:19:46.149 EPERIGEE 229 ORBIT PERIGEE 2001:096:11:02:40.332 EAPOGEE 230 ORBIT APOGEE 2001:097:18:46:27.383 EPERIGEE 230 ORBIT PERIGEE 2001:099:02:29:47.513 EAPOGEE 231 ORBIT APOGEE EVENTS DONE OBSID -------------- ---- ----- Start Shift 094:1130 No COMM this shift. End of shift 094:1400 NOTES/ISSUES/PROBLEMS --------------------- 1) Notes from 9:00am meeting: Operations (Dave): - Loads inactive due to RADMON TRIP - 3 supports yesterday, 1 34m 2 26m, dumps up to date Mission Planning (Dan): - Case 1 replan load built, reviewed but not uplinked due to continued high radiation last night - Case 2 loads built, to be reviewed at 11am today. S/C Engineering(Jeff): - Discussed lack of star acquisition on obsid 2062 (2 stars) Cannot find reason for it. Eric suggested that we may have to revisit this attitude during a perigee passage to diagnose the problem. Roger directed that the issue be placed onto the technical problems list. - Impromptu telecon held on OTG patch yesterday (MSFC/TRW/FOT). TRW was asked to work on option 2 method of patching. Will have more comprehensive review in OTG telecon next week. OTG group to send E-mail comments on option selection. SOT(Bill): - ACE flux levels in 130-214 keV channel about 100,000-200,000 and erratic. - EPHIN levels during last pass: Rate Limit E1300 20 ( 10) P4GM 200-300 ( 300) P41GM 3 (8.47) - GOES-8 P2 channel about 40 now (equates to 130 in P4GM channel) - Will discuss alternative replans to Case 2 in load review at 11. - Telecon at 2:30pm to go over radiation. DSOPS(Joy) - One quick look (see below) GOT(Mike/Chris): - All is OK. Meetings/events: - 10am, star selection mtg. - 11am, load review for APR0501 - 1pm, engineering mtg - 2:30pm, radiation telecon Roger: - Passport to Knowledge TV show went well, had favorable comments. - Anne Kinney from NASA HQ will visit tomorrow. 2) Quick look data: Seq # ObsID It Target start time SI Grat Comment ---------------------------------------------------------------------------------------------------------- 600196 02062 00 NGC 4314 2001:092:19:53:05.178 16.5 ACIS-S NONE Two stars missing