SSOC Tohban Report for Week 22 (26 May - 01 Jun 1997) SSOC : Noguchi, Koyama KSC : Hashizume, Hanaoka 0. Meeting Attendance: Sterling, Culhane , McDonald, Hudson, Weber, Slater, Kosugi, Watanabe,Hara, Sawa, Nakajima,Shimizu, Koyama 1. Solar Activity: The solar activity was quietly or moderately active. The largest flare was C4 flare around 10:00 on May 27. 2. Standard Operation: 2.1 SXT Table Uploads: ------------------------------------------------------------ Pass ID Pass # Table ID ------------------------------------------------------------ Monday 970526- 3 970526 P3 ARS1 STD+LONG Tuesday 970527- 2 970527 P2 ARS1 DKCAL Wednesday 970528- 3 970528 P3 ARS1 STD+DIFF Thursday 970529- 3 970529 P3 ARS1 STD+LONG Friday 970530- 2 970530 P2 ARS1 STD+LONG Saturday 970531- 3 970531 P3 ARS1 STD+LONG ------------------------------------------------------------ 2.2 STT timer setting: The STT timer was set during pass 4 (970526-1135) on 26-May-97. The next timer setting is planned for 02-jun-97 (Monday evening). 2.3 Offpointing for Terminators None. 2.4 HXT calibration HXT Calibration:970526-0825 3. Errors and Problems 3.1 BCS Errors and Problems: An error was found on pass 5, 30-May, and the BCS recovered on this pass by a BCS Recovery plan. 3.2 SXT Errors and Problems: None 3.3 Transmission Problems from Last Week. None. 3.4 FAXes from SSOC to KSC. There was no problem in the week 22. 3.5 Bug in Command Sheet Generation Code. No problem in the week 22. 3.6 Failed File Transfer from DSN. None. 3.8 False Flares There was no report on detecting false flares in SAA. 4. DSN Communications: 4.1 DSN Final schedule for W22: We canceled 1 pass for W22. 4.2 DSN Final schedule for W23: We canceled 1 pass for W23. 4.3 DSN Preliminary Schedule for W24: We canceled 1 pass for W24. 4.4 DSN Strawman schedule for W25: We canceled 29 passes. 4.5 Data Transmission from DSN: (/home/flare1/yohkoh/dsn_corrupt/97_22 117 76 1841 not received Requested 06 May. no response Requested 13 May. no response Requested 16 May. Closed/ Give up 134 76 1040 not received Requested 21 May. no response Requested 27 May. no response Requested 30 May. 139 17 1529 corrupted tape Requested 23 May. no response tape Requested 27 May. Closed / same data 143 76 0454 corrupted tape Requested 27 May. no response tape Requested 30 May. 145 80 0531 corrupted tape Requested 27 May. no response tape Requested 30 May. 5. YOHKOH/ASUKA/AKEBONO/HARUKA Pass Conflicts at KSC: 5.1 Canceled passes for W21, W22 Week 22: Eleven passes were canceled, nine for Haruka, three for Akebono Week 23: Six passes were canceled for Haruka 6. Special Operations: None. 7. Holiday Schedule: The next holiday will be Sunday, June 9. 8. Hikitsugi Items: 8.1 Tohbans for W23 SSOC : Nakajima, Shimizu KSC : Hanaoka, Magara 8.2 STT Timer setting Due on Monday evening (970602-0929; already included in command sheets). 8.3 OP and Command Sheet Status The command sheets and OP for Monday evening (02-JUN UT) have been sent to KSC . The OP has also been transfered to KSC. It is still necessary to check tail_dsn however. 8.3 New Manual and Checksheet Versions A new version of the English Tohban Manual is now out. Future tohbans (beginning with this week's) should write corrections and updates directly in the manual, and inform A. Sterling of the changes. Jim Lemen has made a new version of the checksheet to correspond to the new manual. Changes to the checksheet should be marked on the checksheet and reported to A. Sterling. 8.4 Sirius Data Nothing to report. 8.5 Suggestion to DSN selection rule: mail from JPL I understand that you access RASM and choose the passes that are made available to you. We would like you to use the Wallops (WFF) passes as much as possible. In other words, if a pass from one of the DSN sites (Goldstone, Madrid or Canberra) can be substituted by a WFF pass, please use the WFF pass and delete the DSN pass, instead of vise versa. Please understand we are not asking you to give up any coverage but if the same coverage can be accomplished by using WFF instead of the DSN, we would like you to do so. (Albert Chang) 9. Action Items 9.1 Week-22--A/I-1/Watanabe / status: Close We find bug in op_first_guess.The problem may lie in you newly accommodated "BDR optimization" code,perhaps. This particular error happens for the two eliminate contacts,namely U 9:54 and G16 10:21 on 30-May-97. If we elimate one of these passes,the program runs normally. J.Lemen will recover this week.