To:sot_shift from: Dan Schwartz date: 24 Jul 00, 12:00noon EDT Subject: SOT shift report 2000-07-24 L367 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Jul_24_2000_L367.txt. Shift L367. Start at 206:12:00 GMT = 08:00am 24 Jul EDT End 12:00 noon 24 Jul SOT Lead DAS (Times will be given in GMT on day 206. In general times are rough, not precise.) PLAN ---- Run load JUL2300. Finish OBSID 655, ACIS-I image of the globular cluster Terzan 5. In the next 24 hours use ACIS-S to image OBSID 1827 of the soft gamma-burst repeater SGR 1806-20, and OBSID 668 of the faint low mass X-ray binary 1746-331, and then stow instruments for radiation belt passage. Next Comms: 206:11:30 to 12:30 206:19:15 to 21:15 207:02:00 to 03:00 207:08:45 to 09:45 207:17:55 to 19:55 208:03:55 to 04:55 208:10:20 to 12:20 208:20:50 to 22:50 209:07:45 to 08:45 209:17:45 to 18:45 Orbital events 2000:207:06:25:37.246 133 ORBIT PERIGEE 2000:208:14:10:22.535 134 ORBIT APOGEE 2000:209:21:54:58.851 134 ORBIT PERIGEE 2000:211:05:40:00.422 135 ORBIT APOGEE EVENTS ------ Status at AOS, 206:11:32, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 266.996 deg DEC = -24.767 deg ROLL = 270.859 deg Format = 2 OBSID = 655 TERZAN 5 SIM FA = -435 SIM TSC = 92903 (ACIS-I) HETG = OUT (80.2 deg) LETG = OUT (78.3 deg) HRC-I HV is ON EPHIN Geom = LARG E1300 = 0.1 LT 10.0 (RADMON P4GM = 0.7 LT 300. Triggers) P41GM = 0.0 LT 8.47 A-leak = 0.3840 mu-a B-leak = 0.0680 mu-a Descending through 127024 km. ACIS focal plane temperature -119.7. 12:30 LOS. Status essentially unchanged Descending through 124324 km. ACIS focal plane temperature -119.7. NOTES/ISSUES/PROBLEMS --------------------- ACE 130-214keV proton flux ~2000 and fluctuating. EPHIN has continued to decrease, and is nearing levels prior to JUL 13 solar events. We note a report from SOHO: "LASCO and EIT observed a partial halo CME on 2000/07/22. The event was first seen in C2 at 12:30 UT as a bright front in the NW. Later C3 images show that the CME extends over at least 290 degrees, from PA 20 (NE) all along the West limb to PA 90 (E limb). The measured speed of the leading edge was 1106 km/s at PA 280 (W limb)." DSN has rescheduled the present week so that the baseline for 26m antenna Chandra contacts will be the "legacy" equipment, not the new automatic equipment. Problems were reported with the latter last week, and are being worked by DSN. From the 9am status meeting: Over the weekend, 9 supports, 10 SSR dumps. 3 Load segments uplinked, onboard loads good until 210:05:30. The HETG retraction from the onboard stored loads was successful!, at 205:21:04! We still have an issue reconciling the requirement for FORMAT 4 during all grating moves, with the time needed by ACIS to dump the science report. This issue needs work! The routine CAP 563A to check the CPE warm start count was run, count=1 as expected. JUL3000 is proceeding well. Needs updated comet positions and then products can be issued, perhaps at COB today for a possible 1st load review at 2pm tomorrow. ASVT testing will proceed today, Wednesday and Friday, on the products for eclipse operations. Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 121 N132D 201:08:36 ACIS-S HETG Looks good 01828 N132D 202:06:49 ACIS-S HETG Looks good 00636 HD 45348 203:03:53 ACIS-S/HETG 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: 800-759-8352 PIN 1636502 or e-mail 1636502@skytel.com -------------------------------------------------------