To:sot_shift from: Dan Schwartz date: 21 Mar 05, 12:00noon EST Subject: SOT shift report 2005-02-21 L2069 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/web-cxc/htdocs/acis/SOT_reports/Mar_21_2005_L2069.txt. Shift L2069. Start at 080:13:00 GMT = 08:00am 21 Mar EST End 10:00am 21 Mar SOT Lead DAS (Times will be given in GMT on day 080.) PLAN ---- Continue running load MAR2105C. Go through perigee, then obsid 5844, an ACIS-I observation of the Extended Groth Strip, part of a Very Large Project survey. Next Comms: 080:1700 to 1800 080:2130 to 2330 081:0245 to 0345 081:1120 to 1320 081:2350 to 0050 082:1100 to 1200 082:1445 to 1545 082:2315 to 0115 Orbital events: 2005:080:14:21:35.274 776 EPERIGEE ORBIT PERIGE 2005:081:22:05:35.339 777 EAPOGEE ORBIT APOGEE 2005:083:05:48:59.405 777 EPERIGEE ORBIT PERIGEE 2005:084:13:33:07.978 778 EAPOGEE ORBIT APOGEE 2005:085:21:16:26.390 778 EPERIGEE ORBIT PERIGEE 2005:087:05:00:12.549 779 EAPOGEE ORBIT APOGEE 2005:088:12:43:50.412 779 EPERIGEE ORBIT PERIGEE EVENTS ------ Status at LOS, 080:03:28, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 226.050 deg Dec = -2.794 deg ROLL = 87.330 deg Format = 2 OBSID = 5793 RXC J1504.1-0248 SIM FA = -535 SIM TSC = 90519 (ACIS-I) DITHER = ENAB HETG = OUT (79.09 deg) LETG = OUT (77.59 deg) HRC-S HV is ON EPHIN Geom = SMAL E150 = 365.9 E300 = 1.1 E1300 = 0.0 LT 10.0 (RADMON P4GM = 0.0 LT 300. Disabled) P41GM = 0.0 LT 8.47 A-leak = 1.0200 mu-a B-leak = 1.0200 mu-a Descending through 83850 km. ACIS focal plane temperature -118.6 degC. EPH temp 92.71 degF NOTES/ISSUES/PROBLEMS From the 9am status meeting: Nine supports over the weekend, including two added supports. Numerous issues, all apparently due to problems getting predicts to the stations. We are lagging about one 45min pass worth of playback data -- will be okay if next pass is without incident. Three segments of the MAR2105C program were uplinked. On-board loads are good until 083:11:57. Working MAR2805 products. Expect out for review in a day or two. Yesterday we moved the SIM 3000 motor steps further than it had ever gone on-orbit. This was discussed during the load preparations last week, and a final review held last Friday. The SIM was required to access any point on any SI, and was designed and tested on the ground to do so. Issues of "grit" or solid buildup on the track were discussed with NGST design engineer, and considered non-credible. All parties agreed that the move was safe. The move to the extreme position, and the following move away, were watched by Rich Myers and Bill Podgorski, and Rich reported in near real time that all moves were nominal: " . . . with no overcurrents. Max PWM level was 10 - nominal. No stalls occurred." Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 5767 cl1212+2733 076:22:07 ACIS-I NONE looks good 6073 G21.5-09 077:03:24 HRC-S NONE looks good. Cal obs. 6258 cl0328-2140 077:09:46 ACIS-I NONE looks good 5913 M86 078:07:01 ACIS-I NONE target not obvious 5843 EGS-2 078:17:28 ACIS-I NONE looks good 5685 AX J1257.6+3525 079:06:18 ACIS-S NONE target not obvious 6159 A1795 079:08:08 ACIS-I NONE looks good. Cal obs. 6160 A1795 079:12:45 ACIS-S NONE looks good. Cal obs. ------------------------------------------------------- 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 -------------------------------------------------------