SSOC Tohban Report for Week 37 (6-Sep-99 -- 12-Sep-99) SSOC: K.Akita, M.Sawa KSC: Y. Suematsu, W. Yoneshima 0. Meeting Attendance J.Khan, T.Kosugi, N.Nitta, T.Sakao, M.Sawa, K. Akita, Te.Watanabe -------------------------------------------------------------- 1. Solar Activity Activity was low. The GOES background level remained mid B-class. An M-class flare occurred on 8-Sep. -------------------------------------------------------------- 2. Standard Operations 2.1 SXT Table Uploads The following SXT tables were uploaded during week 36: ===================================================== UT Date & Time Pass Table ID ===================================================== 06-SEP-99 02:16 2 990906 P2 ARS1 STD 07-SEP-99 02:29 3 990906 P3 ARS1 DARK 07-SEP-99 23:17 1 990907 P1 ARS1 DIFF 08-SEP-99 04:27 4 990907 P4 ARS1 STD 08-SEP-99 21:50 1 990908 P1 ARS1 1FFI 09-SEP-99 01:14 3 990908 P3 ARS1 STD 10-SEP-99 01:28 3 990909 P3 ARS1 STD 10-SEP-99 20:41 1 990910 P1 ARS0 ILHRQD 11-SEP-99 01:42 4 990910 P4 ARS1 STD ===================================================== 2.2 STT Timer setting STT timer was set during Pass 3 of 07-Sep-99. The next Timer Set is due on Tuesday, 14-Sep-99 (UT). -------------------------------------------------------------- 3. Special Operations None -------------------------------------------------------------- 4. Errors and Problems 4.1 BCS Error BCS error was found in the pass 2 of 6-Sep, and in the pass 1 of 9-Sep. It was recovered properly. 4.2 SXT Error None 4.3 DSN Final Schedule Format. The DSN Final Schedules since w35 were not readable by op_first_guess in its original form. This is the same problem which has been reported for these weeks. There are 5-digit numbers in PASS NO. column of final schedule. Once the leading "4" is manually removed, the problem was fixed. The situation was the same last week. -------------------------------------------------------------- 5. NASA Station Scheduling 5.1 Contact pass cancelations/additions The following DSN/NASA passes were added/deleted: =================================================================== DSN/NASA Schedule Week Schedule Changes =================================================================== Real-time 37 2 cancelations, 1 by SSOC and 1 by NASA Final 38 4 cancelations by SSOC Preliminary 39 8 cancelations by SSOC Strawman 40 86 cancelations by SSOC + Seko-san =================================================================== 5.2 Data Transmission from NASA Ground Stations -(From /home/flare1/yohkoh/dsn_corrupt/99_37)--------------- 235 46 1620 missing requested 26-Aug same data requested 30-Aug no response requested 01-Sep no response requested 07-Sep Closed/ same data 236 66 1913 missing requested 26-Aug same data requested 30-Aug no response requested 01-Sep no response requested 07-Sep Closed/ same data 238 46 1519 missing requested 30-Aug no response requested 01-Sep no response requested 07-Sep Closed/ same data 240 80 2135 corrupted tape requested 30-Aug corrupted tape requested 03-Aug Closed/ same data -------------------------------------------------------------- 6. KSC Pass Conflicts and Schedule In Week 37, 10 KSC contacts were lost, 10 to ASCA. In Week 38, 10 KSC contacts will be lost, 10 to Asuka. Note: For future weeks, it would be nice if Yohkoh could get passes 4 and 5 prior to each weekend operation, and passes 1 and 2 immediately following. Doing this would allow us to retain the maximum number of NASA passes through the weekend. -------------------------------------------------------------- 7. Hikitsugi Items 7.1 Tohbans for week 38 SSOC: Y. Hanaoka, H. Hudson KSC: W. Yoneshima, K. Fujiki 7.2 STT timer setting The next STT TIMER SET is due on 14-Sep-99 (UT). 7.3 Holiday Schedule Next Yohkoh holiday will be Sunday, 19-Sep-99 (JST). 7.4 Final Schedule Format Take note of the format of the w38 Final Schedule as discussed in Section 4.3 above. 7.5 Orbital elements update on Tuesday ( not Wednesday )this week This Wednesday (15-Sep) is a national holiday. 7.6 DSN Pass addition may be needed. Many KSC passes will be lost due to the conflict with ASCA. In order to conpensate for the coverage loss, SSOC tohbans should consider DSN pass addition for the final schedule. ------------- The Following is Unchanged from Last Week -------------- 7.5 Tohban Manual The English-language version of the Tohban Manual was updated; only minor changes were required. A corresponding checksheet was also generated. 7.6 Software problems pr_gev with /hc keyword produces a temporary output file but does not print it at the printer. 7.7 If possible, please schedule terminator opportunities on any weekend table (i.e., if room permits). 7.8 KSC pass conflicts ASCA conflicts cause the loss of about 10 KSC contacts per week at this time. We do not know which contacts Yohkoh will lose until the weekly meeting. Santiago contacts occur on the same orbits as KSC contacts. Therefore, keep as many Santiago contacts as possible in the DSN Strawman and Preliminary Forecasts. 7.9 Command glossary We need a shorthand glossary for common OP and command-sheet commands. This already exists pretty much in the Sakao manual in Japanese, and the Week 26 tohbans started accumulating an English version on "yohkoh.glossary" === END ===