To:sot_shift from: Dan Schwartz date: 06 Nov 01, 12:00noon EST Subject: SOT shift report 2001-11-06 L838 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Nov_06_2001_L838.txt. Shift L838. Start at 310:12:00 GMT = 08:00am 06 Nov EST End 12:00 noon 06 Nov SOT Lead DAS (Times will be given in GMT on day 310.) PLAN ---- No observing program due to SCS107 activation by RADMON trigger last Sunday. Need to debug ACIS T-plane latchup anomaly, plan for restart of observing program. Next Comms: 310:1315 to 1415 310:2350 to 0150 Plan ACIS CAP 754 to dump memory & warm boot 311:0800 to 1000 311:1650 to 1850 312:0315 to 0415 Plan to load NOV0801A to resume observing 312:0630 to 0730 Extra pass to enable check of EPHIN rates 312:1310 to 1410 312:2000 to 2100 313:0500 to 0600 313:1400 to 1500 313:2240 to 0040 314:0700 to 0900 314:1510 to 1610 315:0045 to 0245 315:1000 to 1100 315:1900 to 2100 Orbital events: 2001:310:15:55:48.552 311 EAPOGEE ORBIT APOGEE 2001:311:17:08:04.685 311 EE1RADZ0 ELECTRON1 RADIATION ENTRY0 2001:311:23:40:55.031 311 EPERIGEE ORBIT PERIGEE 2001:312:04:18:04.685 312 XE1RADZ0 ELECTRON1 RADIATION EXIT0 2001:313:07:24:21.071 312 EAPOGEE ORBIT APOGEE 2001:314:14:13:25.118 312 EE1RADZ0 ELECTRON1 RADIATION ENTRY0 2001:314:15:08:54.429 312 EPERIGEE ORBIT PERIGEE EVENTS ------ Status at AOS, 310:13:30, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 0 RA = 141.001 deg Dec = 59.999 deg ROLL = 74.143 deg Format = 2 OBSID = 61417 SIM FA = -467 SIM TSC = -99616 (HRC-S) HETG = OUT (79.46 deg) LETG = OUT (77.96 deg) HRC-I HV is ON EPHIN Geom = Smal E1300 = 129.1 LT 10.0 (RADMON is P4GM = 2785.9 LT 300. disabled) P41GM = 25.9 LT 8.47 A-leak = 1.0200 mu-a B-leak = 0.4760 mu-a Ascending through 137672 km. 1413 LOS. Status essentially unchanged. Ascending through 137980 km. ACIS focal plane temperature -119.9. E1300 = 168.7 LT 10.0 (RADMON is P4GM = 2357.7 LT 300. disabled) P41GM = 26.9 LT 8.47 NOTES/ISSUES/PROBLEMS EPHIN rates are still 10 to 50 times higher than the 1/3 trigger levels at which we would possibly re-enable loads. OBSID 2010, of PSR0628-28, got only ~2700 out of 20Ksec before the loads were terminated by RADMON. It therefore needs to be rescheduled. The T-plane lockup of S2 which occured during this run does not compromise the observation of the target on S3. From the 9am status meeting: Intercept load NOV0801A is being planned to resume with OBSID 1624 at 312:09:45. Products expected out this morning for an email load review today, and a 2pmEST final review tomorrow (Wed.). That final review will also include a review for CAP 753, to start ACIS CTI measurements, if allowed by the radiation conditions during the two load opportunities at 312 0315 to 0415, or 312 0630 to 0730. Products for NOV1201B, the "Leonid week" are expected later today. These will require at least one more iteration for star catalog updates and possibly momentum dumps. ASVT testing yesterday was successful at testing the momentum pre-loading products. The slave EHS machine in the ACIS room had been planned for replacement last Friday by TST9. However, that machine served another function, and now TST8 is planned to replace the old SUN IPX later today. MEETINGS: Telecon at 1pm EST, 405 244 5060 pin 1159# status of ACIS T-plane lockup anomaly and review of CAP 754 to dump acis memory and warm boot. Telecon at 4pm EST, 405 244 5060 pin 1165# Leonid review telecon. We discussed inserting the HETG during the time ACIS-I is at the aim point during the Leonid peak. It was decided that because this was such a short duration, ~2 hours, that the dynamic range of protection was very small. Instead, we have continuous comm through this time and can either activate SCS 107, or run an existing CAP to insert the HETG, if deemed necessary by radiation conditions at the time. Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 3195 ZWICKY 2701 308:05:30 ACIS-S NONE Looks Good 2010 PSR0628-28 308:17:11 ACIS-S NONE Shows the T-Plane lockup. Thanks to Jen Lauer for discovering this yesterday. ------------------------------------------------------- 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 -------------------------------------------------------