Sep_22_1999_M62.txt Shift M62 Start at 1999:265:13:00 GMT = 1999 Sep 22 9:00am EDT End 1999 Sep 20 5:00pm EDT REVISED 9/23 TO CORRECT ERROR ABOUT STARS AND FIDS SOT Lead Ed Kellogg FOT-SI ACIS Yousaf Butt HRC-SI (Times: hhmm or ddd:hhmm, not precise.) Plan: Continue with load EVENTS day 264 DONE OBSID -------------- ---- ----- AOS 1400 62381 AOS, 0 fids, 4 stars 1450 LOS 1600 NOTES/ISSUES/PROBLEMS --------------------- 2145 CAP for ACA fidlite patch is now prepared by Eric Martin. S/C state at 1458: PCAD MODE= NPNT,KALM Stars: = 4 FIDS = 0 RA = 268.2010 est. DEC = -68.4991 est. ROLL = -90.903 est. Format = 2 OBSID = 62381 SIM FA = -535 SIM TSC = -99616 HETG = 81, 82 (out) LETG = 82, 80 (out) Summary from 9 am meeting ------------------------- Ken Gage reports 2nd portion of p17b rebuild went fine. The next is p17c for perigee attitude change. Will be reviewed Thurs AM, deals with rad entry, zone passage, exit. The p18 load products to be out Thurs. night, reviewed Fri noon, uplink late Sat. He is thinking about a new way to implement ACIS CTI measurements, to address the problem that the SIM move isn't in the OR and makes difficulties for processing data. Peter Ford brtought up the issue about simultaneous issuance of OBSID and ACIS Start Science. It is being worked by Ken Gage and Tom Hushka. Ron Felice reported that yesterday's appaerent thermal anomaly was a result of bad TLM data that was not caught. Ed Kellogg reported that he had reviewed the ACA fid patch documentation, obtained from Linda Vester. The only added issue might be that with the patch installed, ACA could not track fidlites when the SIM is moving, but that does not appear to be a problem. The CAP for the patch will be written by Eric Martin this afternoon, and execution is planned for tomorrow during the 10 am pass. Roger Brissenden reported that the NASA HQ briefing went well - they were quite supportive of our approach to the ACIS issue. Dan Shropshire summarized a forthcoming email that outlines needed improvements to mission planning operations. The FOT mission planning people need to get ahead of the curve more on the cycle of load preparation, review and upload. Tasks like archiving & documenting are not being done because of the press of events. Dan Muleady is working on a report on the grating operation, with the punch line being why we're OK. Summary from 11 am Calibration meeting -------------------------------------- HRC does have a gain variation with position, which will be explored in an impending AR Lac observation. HRC PI team have corrected for broadening of the HRC-I image by data reduction. This has not yet been incorporated into the pipeline. Almus is expected shortly to produce the next version of a degap map for HRC-I. Nothing new yet for HRC-S. On HRC-S, we can remove a lot of background events by selecting pulse height channels, by a factor of ~3. On HRC-I, the gain is higher, which prevents a similar selection.