Sep_14_1999_M54.txt Shift M54 Start at 1999:257:20:00:00 GMT = 1999 Sep 14 4:00pm EDT End 1999 Sep 15 4:00am EDT SOT Lead Bill Podgorski SOT SC/ACA FOT-SI Eric Martin HRC-SI ACIS-SI Paul Plucinsky, Beverly LaMarr, et. al. Plan: Run P14b load, ACIS-S/HETG observation of HR1099 EVENTS DONE OBSID -------------- ---- ----- Start Shift 257:2000 ----- Out of Contact------ AOS DSS-61(Madrid) 257:2110 (approx) ----- Real time------ In middle of maneuver to HR1099 for OBSID 64 257:2117 64 Verify maneuver configuration and end of maneuver 257:2117 (See notes 1 and 2 below) Verify Chandra configuration 257:2121 (See note 3) Perform diagnostics on HETG failure to insert 257:2130 (See note 4) Execute CAP 432 to insert HETG and change 257:2225 62539 OBSID to 62539 Exectue CAP 433 to change OBSID to 62538 257:2235 62538 LOS DSS-61 257:2300 AOS DSS-24(Goldstone) 258:0055 Verify Chandra configuration 258:0105 62538 (See note 5) Dump SSR 258:0105 LOS DSS-24 258:0135 ----- Out of Contact------ AOS DSS-24 258:0600 ----- Real time------ Verify Chandra configuration - is nominal 258:0600 62538 (See note 7) Noticed that we lost one star (dimmest of 5 at 9.6 mag) 258:0650 Recovered star 258:0652 Dump SSR 258:0703 Noticed that we lost then recovered same star 258:0705 (I'll stop noting this as it is a pattern) Complete SSr dump 258:0730 End of shift 258:0800 NOTES/ISSUES/PROBLEMS --------------------- 1) There was a concern that the star acquisition and transition to normal pointing mode for observation 64 (HR1099) would be compromised by the long time spent in normal maneuver mode earlier in the day. This maneuver started at about 257:2053 and would complete at about 257:2121. Extra support was requested and obtained to observe the results of this maneuver. 2) The PCAD configuration was nominal at AOS. Chandra was in NMM, Format 2, OBSID 64. Attitude was ramping towards target: RA = 54.215947 DEC = 0.573743 ROLL = 100.272391 At end of maneuver NPT mode was successfully obtained with all 5 stars and 3 FIDS being tracked. 3) As noted above in note 2, the Chandra maneuver was successful and NPT mode obtained. Other parameters were as follows: SIM FA: -467 SIM TSC: 75615 (ACIS-S) Format: 2 OBSID: 64 HETG: 81 deg - OUT!!!!!! 4) The last grating motion was an LETG retraction in load P13: ATS,OTG,GRATING='NONE',TIME=1999:256:04:36:47.748 P13 was terminated on 256:0838 to allow for ACIS bakeout. It was discovered during a real-time contact starting at 256:0730 that the LETG retraction had been completed but that the MCE voltages were still on. CAP 416 was run on 256:0741 to reset the MCE voltages to zero, but it was determined today that some software flags were in the wrong state, thus causing the failure of the HETG insertion today: ATS,OTG,GRATING='HETG',TIME=1999:257:21:12:00.000 This failed insertion reset these flags, however, so we were able to run a CAP to insert the HETG, CAP 432. The HETG insertion this time ran to completion and turned off the MCE voltages. (I am not certain about the software flags). During this CAP we set the OBSID to 62539. After the HETG was in we set the OBSID to 62538, which should be the OBSID to use for the HETG/ACIS-S observation. 5) Chandra configuration at 258:0105 was nominal with parameters as follows: PCAD MODE = NPT Stars: = 5 FIDS = 3 RA = 54.215947 DEC = 0.573743 ROLL = 100.272391 Format = 2 OBSID = 62538 SIM FA = -467 SIM TSC = 75615 (ACIS-S) 6) Extra real-time coverage has been requested for day 259 to support added ACIS diagnostic testing. They do not as yet know what coverage can be obtained. 7) Chandra configuration is same as in note 5.