To:sot_shift from: Dan Schwartz date: 26 Feb 02, 12:00noon EST Subject: SOT shift report 2002-02-26 L950 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Feb_26_2002_L950.txt. Shift L950. Start at 057:13:00 GMT = 08:00am 26 Feb EST End 11:00am 26 Feb SOT Lead DAS (Times will be given in GMT on day 057.) PLAN ---- Continue running load FEB2502B. Finish obsid 3445, ACIS-S observation of the redshift z=1.786 cluster of galaxies around 3C 294. Then do OBSID 3092, ACIS-S observation of the very red quasar FTM0729+3336. Next Comms: 057:1300 to 1400 057:1650 to 2215 ACA dark field calibration 057:1825 to 1925 058:0500 to 0600 058:1445 to 1545 059:0115 to 0215 059:0900 to 1000 059:1830 to 1930 060:0200 to 0300 060:0915 to 1015 060:1910 to 2110 Orbital events: 2002:056:17:42:50.944 EAPOGEE 353 ORBIT APOGEE 2002:058:01:27:59.916 EPERIGEE 353 ORBIT PERIGEE 2002:059:09:10:41.154 EAPOGEE 354 ORBIT APOGEE 2002:060:16:54:31.944 EPERIGEE 354 ORBIT PERIGEE 2002:062:00:37:50.503 EAPOGEE 355 ORBIT APOGEE 2002:063:08:21:08.436 EPERIGEE 355 ORBIT PERIGEE 2002:064:16:04:44.138 EAPOGEE 356 ORBIT APOGEE 2002:065:23:48:54.344 EPERIGEE 356 ORBIT PERIGEE 2002:067:07:32:04.327 EAPOGEE 357 ORBIT APOGEE 2002:068:15:16:50.776 EPERIGEE 357 ORBIT PERIGEE EVENTS ------ Status at AOS, 057:13:02, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 211.706 deg Dec = 34.190 deg ROLL = 104.570 deg Format = 2 OBSID = 3445 3C 294 SIM FA = -467 SIM TSC = 75623 (ACIS-S) HETG = OUT (79.46 deg) LETG = OUT (77.96 deg) HRC-I HV is ON EPHIN Geom = LARG E1300 = 0.0 LT 10.0 (RADMON P4GM = 0.0 LT 300. Triggers) P41GM = 0.0 LT 8.47 A-leak = 1.0200 mu-a B-leak = 0.3920 mu-a Descending through 97847 km. ACIS focal plane temperature -118.7. 0900 LOS Status is essentially unchanged. Descending through 93754 km. ACIS focal plane temperature -118.7. NOTES/ISSUES/PROBLEMS ACIS is somewhat warm for a science observation, although still within the tolerance of 2 deg C for which gain change is deemed negligible. Is the earth in the field of view? From the 9am status meeting: Three supports the past day, all nominal. One load segment uplinked, onboard loads good through 060:21:40. CAP 779 was run to patch the EPS parameters to the default Medium Eclipse settings, following the end of the current eclipse season. MAR0402B products are out, there will be a load review telecon at 2pm today. Planning a transition to OFLS 9.1C later this week, following finalization of products. Dark current calibration will commence at 16:50. The overlapping support at 1825 to 1925 will be a test with DSS-16 to see if the 26m antenna can capture the ACA dark current data with the same fidelity. Solar radiation low, not an issue. The ACIS team is looking into an apparent systematic decrease, of up to a relative 20%, in low energy QE over the past two years. Quick look data: No new quick looks. ------------------------------------------------------- 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 -------------------------------------------------------