To:sot_shift from: Dan Schwartz date: 22 Mar 06, 12:00noon EST Subject: SOT shift report 2006-03-22 L2435 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/web-cxc/htdocs/acis/SOT_reports/Mar_22_2006_L2435.txt. Shift L2435. Start at 081:13:00 GMT = 08:00am 22 Mar EST End 10:00am 22 Mar SOT Lead DAS (Times will be given in GMT on day 081.) PLAN ---- Continue running load MAR2106C. Do several calibration observations of E0102-72 with ACIS, then 3 Cas A calibrations with HRC-I, ACIS-I, and ACIS-S. Next Comms: 081:2150 to 2250 082:0345 to 0445 082:1200 to 1300 082:1950 to 2050 083:0330 to 0415 083:1040 to 1140 083:2035 to 2130 Orbital events: 2006:080:12:04:05.555 914 EPERIGEE ORBIT PERIGEE 2006:081:19:48:05.623 915 EAPOGEE ORBIT APOGEE 2006:083:03:31:22.939 915 EPERIGEE ORBIT PERIGEE 2006:084:11:16:06.366 916 EAPOGEE ORBIT APOGEE 2006:085:18:59:13.547 916 EPERIGEE ORBIT PERIGEE 2006:087:02:44:09.914 917 EAPOGEE ORBIT APOGEE 2006:088:10:28:00.480 917 EPERIGEE ORBIT PERIGEE EVENTS ------ Status at LOS, 081:11:59, was as follows: PCAD MODE = NMAN CONTROL LAW FLAG = NPNT Stars: = 0 FIDS = 0 RA = 15.732 deg Dec = -72.062 deg ROLL = 194.893 deg Format = 2 OBSID = 6748 maneuvering to E0102 SIM FA = -535 SIM TSC = 92903 (ACIS-I) DITHER = ENAB HETG = OUT (79.09 deg) LETG = OUT (77.59 deg) HRC-S HV is ON EPHIN Geom = SMAL E150 = 50.3 E300 = 4.6 E1300 = 6.2 LT 20.0 (RADMON P4GM = 0.0 LT 300. Triggers) P41GM = 0.0 LT 8.47 A-leak = 1.0200 mu-a B-leak = 0.0000 mu-a Ascending through 121796 km. ACIS focal plane temperature -119.7 degC. EPH temp: 109.34 degF EPH 27V: 9.39 NOTES/ISSUES/PROBLEMS From the 9am status meeting: Three supports over the past day. COG crashed but was restarted with no impact. Three segments of MAR2106C were uplinked, on-board loads are good until 083:12:39. Ran CAP's 893A to disable SCS 29, and 675 to enable SCS 107. The MAR2106C replan was approved yesterday. It dropped obsid 6747, an 8ks E0102/ACIS-I calibration observation. This was due to thermal reasons; because of the SCS 107 run, we were not in as cool an attitude as we would have been in the MAR2006C schedule. A total of 10.25 ks scheduled on-target time was lost due to the shutdown. Since we lost one of the Venus pathfinder observations which was scheduled for the last perigee, we plan to rework loads today to run both tests during the perigee passage tomorrow. Loads expected out late today for a review tonight or tomorrow morning. Meanwhile MAR2706 schedule is awaiting continuity, and possible modification of how the Venus observations will be carried out. The STEREO (Solar TErrestrial RElations Observatory) mission was launched this morning. This is especially good for Chandra because otherwise it would have impacted our DSN schedules over the next days. Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 6904 4C19.44 079:15:22 ACIS-S NONE Looks good. ------------------------------------------------------- Dan Schwartz, MS #3 das@head-cfa.harvard.edu phone: (617)495-7232 cell phone: (617)512-5627 pager: email to 6175125627@vtext.com -------------------------------------------------------