To:sot_shift from: Dan Schwartz date: 28 Sep 00, 12:00noon EDT Subject: SOT shift report 2000-09-28 L434 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Sep_28_2000_L434.txt. Shift L434. Start at 272:12:00 GMT = 08:00am 28 Sep EDT End 12:00 noon 28 Sep SOT Lead DAS Spac/Aspect FOT/Sci liason HRC ACIS (Times will be given in GMT on day 272. In general times are rough, not precise.) PLAN ---- Continue running load SEP2400c. Finish HRC-S/LETG observation of the supersoft X-ray source RX J0019.8+2156, obsid 75. Then safe SI's for radiation belt passage. After exiting belts, perform HRC-S/LETG observations of the M-dwarf eclipsing binary system YY Gem, obsid 28, and of the magnetic cataclysmic variable AM HER, obsid 645. Next Comms: No comm this shift. 272:20:10 to 22:10 273:06:30 to 07:30 273:16:20 to 17:20 274:00:30 to 01:30 274:06:50 to 08:50 274:17:00 to 18:00 Orbital events: 273:09:08 ORBIT PERIGEE 274:16:51 ORBIT APOGEE 276:00:34 ORBIT PERIGEE 277:08:18 ORBIT APOGEE 278:16:02 ORBIT PERIGEE EVENTS ------ Status at LOS, 272:11:08, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 4.984 deg DEC = 21.969 deg ROLL = 180.273 deg Format = 1 OBSID = 75 RX J0019.8+2156 SIM FA = -990 SIM TSC = -99616 (HRC-S) HETG = OUT (79.8 deg) LETG = IN ( 4.5 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 = 0.7320 mu-a B-leak = 0.1240 mu-a Descending through 133049 km. ACIS focal plane temperature -119.9. NOTES/ISSUES/PROBLEMS From the 9am status meeting: Discussion of the impending TOO. It looks as if the LETG can be removed during extension of a comm starting at 273:06:30. The TOO observation itself could be done from 273:16:20 to about 273:20:00 (or slightly later). The LETG would be inserted during a new comm to be obtained from ~20:00 to 22:00. The first part of YY Gem would be deleted from the present load (but be subject to rescheduling of the time). YY Gem, HRC-S/LETG, would resume around 273:22:00. The flight mission planners (Kevin) will look to get products out as soon as possible (mid to late afternoon expected), with a load review hoped to be around 8pm, but To Be Announced. Rob Cameron will be SOT representative for grating retraction at 06:30, which is 2:30am EDT tomorrow. Mike Garcia, a co-I on the TOO and in contact with the PI, reports that the team is considering leaving the LETG in place for the TOO observation, due to the expected brightness of the X-ray afterglow. That decision will come later this afternoon and not impact any OFLS products. The TOO will be sequence number 500084, OBSID 598. OBSCAT changes will need to be made, and since that won't happen before scheduling I understand all changes need to be identified to the arcops group for implementation. Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- 1452 SIRIUS B 271:00:56 HRC-S LETG Looks good 608 NGC 1360 269:06:41 HRC-S LETG 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 -------------------------------------------------------