SSOC Tohban Report for Week 21 (19 May - 25 May 1997) SSOC : Hara, Shinohara KSC : Okubo, Hashizume 0. Meeting Attendance: L.Culhane, H. Hara, J. Khan, J. Koyama, L. McDonald, M. Noguchi S. Savy, M. Sawa, T. Watanabe, M. Weber 1. Solar Activity: The solar activity seems to be gradually increasing. One M-class flare, two C-class flares, and a number of B-class flares occurred during this week. 2. Standard Operation: 2.1 SXT Table Uploads: ------------------------------------------------------------ Pass ID Pass # Table ID ------------------------------------------------------------ Monday 970519-1237 2 970519 P2 ARS1 STD+LONG Tuesday 970520-1238 3 970520 P3 ARS1 DKCAL Wednesday 970521-1239 3 970521 P3 ARS1 STD+DIFF Thursday 970522-1136 2 970522 P2 ARS1 STD+LONG ------------------------------------------------------------ 2.2 STT timer setting: The STT timer was set during pass 4 (970519-1444) on 20-May-97. The next timer setting is planned for 26-May-97 (Monday evening). 2.3 Offpointing for Terminators None. 2.4 HXT calibration HXT calibration: 970521-1135, 970522-0929, 970522-1136, 970524-1134 HXT gain change: 970523-1136 3. Errors and Problems 3.1 BCS Errors and Problems: None. 3.2 SXT Errors and Problems: A bit-map error was found in the contact 970524-1030, and it was cleared during the same pass by Yobi-command C. 3.3 Transmission Problems from Last Week. None. 3.4 FAXes from SSOC to KSC. There was no problem in the week 21. 3.5 Bug in Command Sheet Generation Code. No problem in the week 21. 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 W21: None. 4.2 DSN Final schedule for W22: We canceled 4 passes for W22. 4.3 DSN Preliminary Schedule for W23: We canceled 4 passes for W23. 4.4 DSN Strawman schedule for W24: We canceled 40 passes. 4.5 Data Transmission from DSN: (/home/flare1/yohkoh/dsn_corrupt/97_21) 116 80 1640 not received Requested 06 May. Closed / correct data 117 76 1841 not received Requested 06 May. no response Requested 13 May. no response Requested 16 May. 126 46 0914 corrupted tape Requested 14 May. Closed/ correct data 129 76 1415 corrupted tape Requested 14 May. Closed / same data 134 76 1040 not received Requested 21 May. 139 17 1529 corrupted tape Requested 23 May. 5. YOHKOH/ASUKA/AKEBONO/HARUKA Pass Conflicts at KSC: 5.1 Canceled passes for W21, W22 Week 21: Eight passes were canceled for Akebono Week 22: Eleven passes were canceled, three for Haruka, five for Akebono 5.2 Future Schedule: There was a long-term planning meeting with Nagase-sensei and the representatives of all four satellites on May 15. Yohkoh will have a two-day holiday on June 29 and 30 due to maintenance at KSC. 6. Special Operations: None. 7. Holiday Schedule: The next holiday will be Sunday, June 1. 8. Hikitsugi Items: 8.1 Tohbans for W22 SSOC : Noguchi, Koyama KSC : Hashizume, Hanaoka 8.2 STT Timer setting Due on Monday evening (970526-1031; already included in command sheets). 8.3 OP and Command Sheet Status The command sheets and OP for Monday evening (26-May UT) have been sent to KSC and checked. 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-20-A/I-1 /Watanabe/ status: Open False Flares: Watanabe san to see if the SXS rates look normal during the false flares of 15 May and on 6 May at about 17:08. If so, then the false flares are ``probably due to a seasonal change in SAA structure, not something to worry about,'' according to Hudson san.