Shift M17 Start at 1999:219:18:00:00 GMT = 1999 Aug 7 2:00pm EDT End 10:00pm EDT SOT Lead/FP Sci MJ Spac/Aspect RAC FOT/Sci liaison HRC GM ACIS YB,RB,PPP (Times will be given in GMT on day 219/220. In general times are rough, not precise.) Plan ---- Continue ACIS Internal Cal Measurements Continue vacuum monitor observations Pitch to 45 for ISIM flexure and focus assembly max temp profiles Events ------ 19:00 Pitch to 45 deg 19:14-16 lost track on fid-lights 19:15 OBSID 62715 19:20 start ACIS science run 22:15 end ACIS science run 22:16 OBSID 62714 22:20 start ACIS science run 22:20 vacuum monitor pressure 8.3e-6 22:45 start CAP 182: switch to 64kbps downlink for low rate SSR dump 23:15 switch to 128kbps downlink 23:50 end ACIS science run 23:51 OBSID 62713 23:55 start ACIS science run 00:30 switch to 512kbps downlink - end CAP 182 01:24 end ACIS science run 01:25 OBSID 62712 01:30 start ACIS science run 01:45 DSN Station swap -- Madrid -> Goldstone Notes/Issues/Problems --------------------- A schedule conflict between the start of ACIS bake-out for door open and the ACA full field search appeared in planning. This is caused by the attitude requirement for the ACA activity (a pitch of 107 deg) and an ACIS requirement for normal sun mode during the bake-out. A default plan is to do as much ACA activity as possible and then maneuver back as soon as comm is re-established just before bake-out is commanded. Issue resolved by delaying start of bake-out to ~1999:220:15:45 (begin uplink of command loads ~14:40 to save procedure time). As expected, track on fid-lights was lost due to excessive stay light while the observatory was at a pitch of 45 deg. Podgorski, Freeman, and Cameron issued flight-note 234 describing SIM flexure motion and fid-light motion. 20-hr Post-IPS5 vector results: apogee 139188.6 perigee 9652.206 period 63:28:43.6 No word from Ball about the PEA patch, TRW states that it hasn't arrived from BALL at the SMF. SOT should check twice per 8-hr shift at both BALL and TRW for progress of patch development (BALL contact: Dan Michaels - pager 1-888-788-0344). PCAD has a desire to change the attitude for the ACA full field search activity from a pitch of 107 to a pitch of 135. This will enable them to get earth sensor data on the descending leg of the orbit.