To:sot_shift from: Dan Schwartz date: 26 Feb 04, 12:00noon EST Subject: SOT shift report 2004-02-26 L1680 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/web-cxc/htdocs/acis/SOT_reports/Feb_26_2004_L1680.txt. Shift L1680. Start at 057:13:00 GMT = 08:00am 26 Feb EST End 12:00 noon 26 Feb SOT Lead DAS (Times will be given in GMT on day 057.) PLAN ---- Continue running load FEB2304B. Perform CTI measurements surrounding perigee passage. Then obsid 5305, a DDT/TOO with the HRC-S/LETG to monitor the spectral evolution of RXJ0720-3125. Next Comms: 057:1425 to 1515 057:2300 to 0100 058:0345 to 0445 058:1100 to 1200 058:2210 to 0010 059:0250 to 0450 059:1255 to 1355 059:1945 to 2045 060:0150 to 0350 060:1215 to 1315 060:2000 to 2100 061:0345 to 0445 061:1245 to 1445 Orbital events: 2004:057:21:34:02.738 629 EPERIGEE ORBIT PERIGEE 2004:059:05:17:56.829 630 EAPOGEE ORBIT APOGEE 2004:060:13:02:31.765 630 EPERIGEE ORBIT PERIGEE 2004:061:20:45:58.915 631 EAPOGEE ORBIT APOGEE 2004:063:04:30:29.823 631 EPERIGEE ORBIT PERIGEE 2004:064:12:13:46.664 632 EAPOGEE ORBIT APOGEE 2004:065:19:57:42.980 632 EPERIGEE ORBIT PERIGEE EVENTS ------ Status at AOS, 057:14:27, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 8 FIDS = 0 RA = 130.998 deg Dec = -18.999 deg ROLL = 312.962 deg Format = 2 OBSID = 60357 descending CTI SIM FA = -467 SIM TSC = -99615 (HRC-S) DITHER = ENAB HETG = IN ( 6.34 deg) LETG = OUT (77.59 deg) HRC-I HV is ON EPHIN Geom = LARG E150 = 0.4 E300 = 0.0 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 = 0.8000 mu-a Descending through 66325 km. ACIS focal plane temperature -118.7. EPH temp 84.10 15:14 LOS Status is essentially unchanged. Descending through 62008 km. ACIS focal plane temperature -119.1. EPH temp 83.17 NOTES/ISSUES/PROBLEMS ACIS was warm, -118.7, at start of comm, indicating that it may have been warm during the end of the previous observation. The MIT acis process monitor at http://acis.mit.edu/asc/acisrt.html appears to be frozen at VCDU 65350:80 From the 9am status meeting: Two supports over the last 24 hours. DSS-66 had a transmitter failure which caused failure to command. This led to SRR rollover at 057:08:27. DSS-66 has subsequently fixed the problem, so we anticipate no issues with future contacts. MAR0104A products were reviewed yesterday. One field had insufficient stars, so it was pulled from the schedule and MAR0104B products are out for review, email by 1pm today. ASVT has a problem with the EPS test set power supply. This is postponing today's rehearsal of the safe mode recovery SIM. The SIM will be scheduled about a week after successful execution of the rehearsal. Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 4820 IRAS 13349+2438 053:07:00 ACIS-S HETG Complete. 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 -------------------------------------------------------