SSOC Tohban Report for Week 35 (23-Aug-99 -- 29-Aug-99) SSOC: M. Irie, H. Hara KSC: M. Hata, S. Fujimaki -1. "TODAY IS THE 8TH YOHKOH BIRTHDAY" 0. Meeting Attendance H.Hara, H.Hudson, M.Miyashita, N.Nitta, Y.Ogawara, T.Sakao M.Sawa, A.Sterling, Te.Watanabe -------------------------------------------------------------- 1. Solar Activity Activity becomes higher than last week. 5 M-class flares and an X-class flare occurred. -------------------------------------------------------------- 2. Standard Operations 2.1 SXT Table Uploads The following SXT tables were uploaded during week 35: ===================================================== JST Date Pass Table ID ===================================================== 23-AUG-99 07:32 1 990823 P3 ARS1 STD 24-AUG-99 09:29 3 990824 P3 ARS1 DARK 25-AUG-99 09:43 3 990825 P3 ARS1 DIFF 26-AUG-99 04:51 1 990826 P1 ARS1 STD 27-AUG-99 06:46 2 990827 P2 ARS1 STD 28-AUG-99 08:43 3 990828 P3 ARS1 STD ===================================================== 2.2 STT Timer setting STT timer was set during Pass 5 of 24-Aug-99. The next Timer Set is due on Tuesday, 31-Aug-99 (UT). -------------------------------------------------------------- 3. Special Operations 3.1 Change of flare-trigger level Flare-trigger level of SXS was changed at the first KSC contact on 23 Aug. Level was changed into 255 cnt/s from 127 cnt/s. 3.2 Change of normal-point OG & its execution The satellite normal-point OG#032 was updated and was executed at the first contact on 27 Aug. The change of pointing position was small, 5 pixels north, 3 pixels east from the previous position in the SXT-CCD coordinate. -------------------------------------------------------------- 4. Errors and Problems 4.1 BCS Error None 4.2 SXT Error None 4.3 DSN Final Schedule Format. The DSN Final Schedule for w35 was not readable by op_first_guess in its original form. This is the same problem which was reported last week. There are 5-digit numbers in PASS NO. column of final schedule. Once the leading "4" is manually removed, the problem was fixed. -------------------------------------------------------------- 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 35 0 cancelations by SSOC Final 36 1 cancelations by SSOC Preliminary 37 3 cancelations by SSOC Strawman 38 71 cancelations by SSOC + Seko-san =================================================================== The deletion of final schedule for W36 was not updated, we sent a request of deletion again on 30 Aug. 5.2 Data Transmission from NASA Ground Stations -(From /home/flare1/yohkoh/dsn_corrupt/99_35)--------------- 231 74 1411 corrupted tape requested 24-Aug Closed/ same data 231 74 1738 corrupted tape requested 24-Aug Closed/ same data *234 16 0744 missing requested 24-Aug Closed/ **234 46 1747 missing requested 24-Aug Closed/ ***234 66 2209 missing data requested 24-Aug Closed / 232 80 0543 corrupted tape requested 26-Aug no response tape requested 26-Aug 232 74 1609 corrupted tape requested 26-Aug 235 46 1620 missing requested 26-Aug 236 66 1913 missing requested 26-Aug *234 DSS-16 0744 - 0753 17172 blocks SOLA TLM DUMP was incomplete; support was short approx.49 seconds. **234 DSS-46 1747 - 1759 15663 blocks Unable to aquire main beam at biginning of track. Dump data may be degraded throughout support. Attempted to acquire main beam using the acq aid antenna with no success. Went to program track and back to auto track but signal levels were still low. ***234 DSS-66 2209 - 2219 10579 blocks At beginning of track receivers were locked to a sidelobe. Selected acq aid antenna and receivers were in lock. -------------------------------------------------------------- 6. KSC Pass Conflicts and Schedule In Week 35, 13 KSC contacts were lost, 4 to Akebono, 2 to Haruka, 7 to Asuka. In Week 36, 13 KSC contacts will be lost, 9 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 36 SSOC: Te.Watanabe, M. Miyashita KSC: M. Hata, Y. Suematsu (2 Sep -) 7.2 STT timer setting The next STT TIMER SET is due on 31-Aug-99 (UT). 7.3 Holiday Schedule Next Yohkoh holiday will be Sunday, 05-Sep-99 (UT). 7.4 Final Schedule Format Take note of the format of the w36 Final Schedule as discussed in Section 4.3 above. ------------- 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 ===