To:sot_shift from: Dan Schwartz date: 03 Jan 00 , 12:00noon EST Subject: SOT shift report, Shift L164 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Jan_03_2000_L164.txt. Shift L164. Start at 03:13:00 GMT = 08:00am 03 Jan EST End 12:00 noon 03 Jan SOT Lead DAS (Times will be given in GMT on day 03. In general times are rough, not precise.) PLAN Continue running load 26DEC99d. Emerge from belts, perform CTI measurement. Next Comms: 003:15:20 to 17:10 003:23:20 to 01:20 004:04:05 to 05:30 004:14:00 to 16:00 004:22:00 to 00:00 EVENTS Status at LOS, 003:08:45, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 0 RA = 94.697 deg DEC = 1.319 deg ROLL = 339.724 deg Format = 2 OBSID = 62241 (ACIS CTI) SIM FA = -467 SIM TSC = -99616 (HRC-S) HETG = OUT (81.0 deg) LETG = OUT (79 deg) HRC-S HV is ON EPHIN: A-Leak = 0.2440 mu-a B-Leak = 0.0400 mu-a 15:21 AOS. Status essentially the same as above, except A-Leak 0.3760 B-Leak 0.0960 16:57 LOS. Status essentially the same as above, except A-Leak 0.4800 B-Leak 0.1200 NOTES/ISSUES/PROBLEMS Notes from 9am status meeting, covering Dec 24 to today: 33 supports, 35 dumps, 2 were repeated. Only Y2K problem -- wall clocks froze and had to be reset. Thanks to all who worked the Holidays! FOT MPS starting with 9 Jan ORs, tight schedule to plan that week, expect 16 Jan ORs today. CAP 539 was run 31 Dec to load a "deadman" safe pointing, in case Y2K prevented subsequent loads. This has been disabled as of 1 Jan. Days 358-361 observed at pitch angles less than 60 deg from the sun. TFTE, Aft cylinder, optical bench all warmed more than usual. HRMA had a transient gradient which settled in about 4 hours, the bench gradients settled in 6 to 10 hours. Rino G will do more trend analysis on this period. We are planning an ACIS flight software patch, Rev B. This will provide a fix to the FEP 0 problem, allow CC 3x3 to choose standard TE grade selections and to run with event histogram. Plan is to approve this patch at a Level II board meeting held in conjuction with the Flight Director's Board meeting this THursday. Then the actual patch would be uploaded on Saturday, assuming we can get an extended comm contact. Meetings: CXC staff, Tuesday, Jan 4, 9:30-11:30 in Pratt Our next Bi-Monthly review will be either Jan 18 or 19, at the OCC. Quick Look data review: OBSID Target Time Comment ----- ------ -------------- ------- 00672 NGC 1851 1999:359:09:40 HRC-S/LETG,hard continuum spectra, abs. lines? 00656 PSR J0218+4232 1999:356:05:35 HRC-I. Source seems to be ~12 arcmin off-axis, was that intended? 00652 V382 Vel 1999 ACIS-I/S2. Bright source streaked on readout. Prominent bright pixel near edge of S2. 00840 PKS0548-322 ACIS-I/S3 Looks good. 00814 Q0135-4001 ACIS-S/I2,I3 No obvious detection. 00846 PKS0521-365 ACIS-S. Bright source streaked on readout. Extended? ------------------------------------------------------- Dan Schwartz, MS #3 das@head-cfa.harvard.edu phone: (617)495-7232 FAX: (617)495-7356 cell phone: (617)512-5627 pager: 800-759-8352 PIN 1636502 or e-mail 1636502@skytel.com -------------------------------------------------------