To:sot_shift from: Dan Schwartz date: 22 May 03, 12:00noon EDT Subject: SOT shift report 2003-05-22 L1400 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/May_22_2003_L1400.txt. Shift L1400. Start at 142:13:00 GMT = 08:00am 22 May EDT End 10:00am 22 May SOT Lead DAS (Times will be given in GMT on day 142.) PLAN ---- Continue running load MAY1903B. Perigee passage followed by CTI measurements. No Comm this shift. Next Comms: 142:2010 to 2210 143:0140 to 0340 143:1000 to 1100 143:2030 to 2130 144:0400 to 0500 144:1300 to 1400 144:2345 to 0045 145:0750 to 0950 145:2050 to 2150 146:0200 to 0300 146:0900 to 1000 146:2010 to 2210 147:0130 to 0220 147:0940 to 1040 147:2010 to 2110 Orbital events: 2003:142:14:27:24.261 523 EPERIGEE ORBIT PERIGEE 2003:143:22:11:23.635 524 EAPOGEE ORBIT APOGEE 2003:145:05:55:01.307 524 EPERIGEE ORBIT PERIGEE 2003:146:13:39:29.127 525 EAPOGEE ORBIT APOGEE 2003:147:21:23:29.869 525 EPERIGEE ORBIT PERIGEE 2003:149:05:07:58.375 526 EAPOGEE ORBIT APOGEE 2003:150:12:52:38.768 526 EPERIGEE ORBIT PERIGEE EVENTS ------ Status at LOS, 142:08:23, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 6 FIDS = 0 RA = 110.000 deg Dec = 12.998 deg ROLL = 254.339 deg Format = 2 OBSID = 60732 ACIS cti SIM FA = -535 SIM TSC = -99616 (HRC-S) DITHER = ENAB HETG = OUT (79.46 deg) LETG = OUT (77.59 deg) HRC-S HV is ON EPHIN Geom = SMAL E150 = 50341.5 E300 = 99.3 E1300 = 0.3 LT 10.0 (RADMON P4GM = 85.7 LT 300. Disabled) P41GM = 0.0 LT 8.47 A-leak = 1.0200 mu-a B-leak = 0.3480 mu-a Descending through 61217 km. ACIS focal plane temperature -119.9. NOTES/ISSUES/PROBLEMS From the 9am status meeting: Three supports, no issues. Last segment of MAY1903B was uploaded. On-board loads good until 145:23:57. May2603A loads signed by Flight Director yesterday. JUN0203 in work. A momentum dump is needed that week, probably on Wed evening, Day 154. Sim translation motor temperature hit 45 deg C yesterday. Not unexpected since we were in a hot attitude. ASVT testing of eclipse patches continues today. Followed by IRU testing of the restart products. Safe mode testing planned for tomorrow. Telecon on Status of the Chandra IRU-1 Gyro-1 Current Fluctuations will be today, 1-3pm EDT, on 405-244-5060 #1165. See http://occwww.cfa.harvard.edu/occweb/FOT/engineering/anomalies_and_tech_issues/IRU1_current/presentations/IRU1%20Current%20Anomaly%20Satus%20Briefing.ppt Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 4168 FORNAX CLUSTER 140:23:14 ACIS-I NONE 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 -------------------------------------------------------