To:sot_shift from: Dan Schwartz date: 15 May 01, 12:00noon EDT Subject: SOT shift report 2001-05-15 L663 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/May_15_2001_L663.txt. Shift L663. Start at 135:12:00 GMT = 08:00am 15 May EDT End 12:00 noon 15 May SOT Lead DAS (Times will be given in GMT on day 135.) PLAN ---- Continue running load MAY1401D. Do a long ACIS-I observation, 1881, of the "starburst analog", NGC 346 in the LMC. No comm this shift. Next Comms: 135:17:00 to 18:40 136:02:00 to 03:00 136:09:30 to 10:30 136:20:00 to 21:00 137:02:05 to 03:05 137:11:30 to 12:30 137:20:00 to 21:00 Orbital events: 2001:136:02:57:52.724 245 ORBIT APOGEE 2001:137:10:41:38.662 245 ORBIT PERIGEE 2001:138:18:25:38.652 246 ORBIT APOGEE 2001:140:02:08:54.994 246 ORBIT PERIGEE EVENTS ------ Status at LOS, 135:08:58, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 14.846 deg Dec = -72.178 deg ROLL = 145.094 deg Format = 2 OBSID = 1881 NGC 346 SIM FA = -535 SIM TSC = 92903 (ACIS-I) HETG = OUT (79.84 deg) LETG = OUT (78.34 deg) HRC-S HV is ON EPHIN Geom = LARG E1300 = 0.0 LT 10.0 (RADMON P4GM = 0.2 LT 300. Triggers) P41GM = 0.0 LT 8.47 A-leak = 1.0200 mu-a B-leak = 0.2400 mu-a Ascending through 121988 km. ACIS focal plane temperature -119.9. NOTES/ISSUES/PROBLEMS From the 9am status meeting: Comments received by email on MAY2101A loads. MAY2101B have been issued, and there will be a load review at 2pm today. There will still be new star catalogs needed for a cleanup re-issue tomorrow. Review of 9.1a went well. There are two minor problems which have workarounds: the blank spaces in traceid and an error in the SOE file when we use more than 13 aca slots (e.g., no fids and all different guide and acquisition stars). These both have workarounds and won't delay promotion of 9.1a. However, if CSC can deliver a patch creating 9.1b, and we can do a diff on products to confirm no changes except the fixes, then we will promote that 9.1b instead. Otherwise, we will wait for the fixes to appear in 9.2. 9.2 must be fixed anyway for other problems. Notably, momentum dumps are scheduled at the ends of maneuvers rather than the beginning as is our operational practice. This means if they are longer than predicted they are truncated when we start to acquire stars. Placing them at the beginning of the maneuver requires that the momentum buildup prediction then proceed during the remainder of the maneuver. ASVT testing yesterday on the stubout patches for SCS 2 and 80 was successful. Products have been circulated for the ASVT testing of the changes to the grating CSD to use the patched OBC software. Ken needs to writeup the test plan. He requires 16 hours of ASVT testing. Quick look data: No new quick look. An old clock correlation file got moved into the archive, and was picked up since it was the most recent file in the archive. This had prevented processing of the AR Lac calibration observations with HRC-S. The situation is now understood. ------------------------------------------------------- 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 -------------------------------------------------------