To:sot_shift from: Dan Schwartz date: 16 Jun 03, 12:00noon EDT Subject: SOT shift report 2003-06-16 L1425 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Jun_16_2003_L1425.txt. Shift L1425. Start at 167:13:00 GMT = 08:00am 16 Jun EDT End 10:30am 16 Jun SOT Lead DAS (Times will be given in GMT on day 167.) PLAN ---- Continue running load JUN1603C. Doing OBSID 3748, a 100ks ACIS-S/HETG observation of Eta Carinae. Next Comms: 167:1220 to 1420 167:2330 to 0030 168:0900 to 1000 168:2010 to 2350 169:0150 to 0250 169:1205 to 1305 169:2100 to 2200 170:0713 to 0813 170:1220 to 1420 Orbital events: 2003:167:17:23:47.813 533 EAPOGEE ORBIT APOGEE 2003:169:01:08:15.250 533 EPERIGEE ORBIT PERIGEE 2003:170:08:51:49.536 534 EAPOGEE ORBIT APOGEE 2003:171:16:35:40.389 534 EPERIGEE ORBIT PERIGEE 2003:173:00:19:52.134 535 EAPOGEE ORBIT APOGEE 2003:174:08:03:53.709 535 EPERIGEE ORBIT PERIGEE 2003:175:15:48:13.446 536 EAPOGEE ORBIT APOGEE 2003:176:23:32:52.194 536 EPERIGEE ORBIT PERIGEE 2003:178:07:16:56.162 537 EAPOGEE ORBIT APOGEE 2003:179:15:02:09.967 537 EPERIGEE ORBIT PERIGEE 2003:180:22:45:43.478 538 EAPOGEE ORBIT APOGEE EVENTS ------ Status at AOS, 167:12:21, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 161.250 deg Dec = -59.665 deg ROLL = 247.182 deg Format = 2 OBSID = 3748 Eta Carinae SIM FA = -467 SIM TSC = 72911 (ACIS-S) DITHER = ENAB HETG = IN ( 6.34 deg) LETG = OUT (77.59 deg) HRC-I HV is ON EPHIN Geom = LARG E150 = 18.0 E300 = 0.3 E1300 = 0.0 LT 10.0 (RADMON P4GM = 0.1 LT 300. Triggers) P41GM = 0.0 LT 8.47 A-leak = 1.0200 mu-a B-leak = 0.5400 mu-a Gyro 1 Curr 1 127.20 Gyro 1 Curr 2 100.80 Ascending through 128419 km. ACIS focal plane temperature -119.7. 14:17 LOS. Status is essentially unchanged. Ascending through 129917 km. ACIS focal plane temperature -119.7. NOTES/ISSUES/PROBLEMS Gyro A1 current reading about 127ma. Has increased from 96ma following hot restart, but still below previous level at ~145ma. From the 9am status meeting: Eight supports over the weekend. No issues. Three Stored Command Sequences were loaded, on-board loads good until 171:09:55. JUN2303 in work, hopefully out late today for a load review tomorrow. Some temperature violations over the weekend, including SIM translation, but expected due to attitude. IRU 1A current has increased, and has also undergone very noisy, ~10ma rms, intervals over the weekend. Eric noted a change of the roll gyro bias from ~ -0.563 to ~ -0.555 deg/hr. A meeting is planned later this week to discuss criteria for a cold restart and to review the cold restart CAP. Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 4402 LALA CETUS FIELD/LAL 166:17:40 ACIS-I NONE 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 -------------------------------------------------------