Sep_24_1999_M64.txt Shift M64 Start at 1999:267:13:00 GMT = 1999 Sep 24 9:00am EDT End 1999 Sep 24 2:00pm EDT SOT Lead Ed Kellogg ACA/SC FOT-SI ACIS Yousaf Butt HRC-SI (Times: hhmm or ddd:hhmm, not precise.) Plan: continue with load. We are on Capella, ACIS-S HETG, doing diagnostics. We started the shift AOS. S/C state: 1331 GMT --------- PCAD MODE= NPNT,KALM Stars: = 5 FIDS = 3 RA = 79.2059 est. DEC = 45.9794 est. ROLL = 98.062 est. Format = 2 OBSID = 1103 SIM FA = -467 SIM TSC = 75625 HETG = 8, 6.7(in) LETG = 82, 80 (out) EVENTS day 267 DONE OBSID -------------- ---- ----- LOS 1345 1103 Summary from 9 am OCC meeting ------------------------------------ Ken Gage reported that the OFLS scheduler has been running more than 12 hrs trying to schedule p18. He thinks it is spending a lot of time trying to schedule a series of 1 ks HRC observations, trying all possible maneuvers on 70 ORs. If so, it would be nice if it would realize that all the HRC observations are at the same attitude, and skip that part. Kevin handed out the first printout of the new graphical timeline. This uses a perl script to extract all the relevant data from the system, and put it into the plot. This one is for the current week, and includes observations, acquisition, bias, grating, maneuvers, SIM motions, comm, orbit events, and DSN stations. It looks very promision. Kevin plans to post it on the web and put a hard copy in the control room, etc. A breakthrough for ops communication! HETG was deployed in the light path yesterday successfully under onboard control. The ACA fidlite patch is operating, and we see no evidence of dropped fidlites. In order to be confident that it is working properly, we will need to monitor ACA operation for several weeks, i.e. over several orbits and significantly longer than the time it has been taking previously to lose a fidlite. CXC Calibration Meeting ----------------------- Norbert on G21.5 effective area vs. off-axis angle: They started with Cas A, ran into having source counts everywhere, couldn't evaluate the bknd, so they switched to G21.5. They calculate the ratio of measured to expected using spectral fits based on ASCA observations. General conclusion is that relative effective area vs. angle off axis is within about 5% of expectations. Jeremy reports that the LETG plate focus data got processed. At first examination, the focus point seems to be different from that obtained by shutter focus, but more detailed analysis is needed. NOTES/ISSUES/PROBLEMS --------------------- Later comment from Jan Vrtilek on OFLS scheduling: this is the first load using the OFLS scheduling feature - new territory. We may need to find a way to schedule the HRC observations as a block. SOT mp is working with FOT mp on this. Further comment by Ken - we did use the scheduler for ~5 ORs in p17 and it worked OK. We have now excised the HRC observations, and Kevin is still having problems. It seems that the prioritization system in OFLS is not giving us what we really want.