SSOC Tohban's Report for Week 27 (28-Jun-99 -- 4-Jul-99) SSOC: S. Akiyama, S.Tsuneta KSC: Y. Yamauchi, S. Yashiro 0. Meeting Attendance Y. Ogawara, T. Kosugi, M.sawa, T. Sakao, T. Watanabe, T. Shimize, K. Aoki, J. Khan, B. Handy, S. Akiyama -------------------------------------------------------------- 1. Solar Activity Solar activity was very high. There were about 13 M-flares. Yohkoh had good coverages for 6 flare out of 13 flare. Unfortunately, we missed the peak phase of the strongest M flare(M3.1) on June 29 due to Yohkoh night. -------------------------------------------------------------- 2. Standard Operations 2.1 SXT Table Uploads The following SXT tables were uploaded during week 27: ===================================================== JST Date Pass Table ID ===================================================== Mon 28-JUN-99 3 990628 P3 ARS1 STMAX01 Tue 29-JUN-99 2 990629 P2 ARS2 DASTAND Wed 30-JUN-99 2 990630 P2 ARS1 DISTAND Thu 01-JUL-99 2 990701 P2 ARS1 STANDARD Sat 03-JUL-99 3 990703 P3 ARS1 STANDARD ===================================================== 2.2 STT Timer setting STT timer set was done on 29-Jun-99 Pass 1. Next setting will be done Tuesday,6-Jul. -------------------------------------------------------------- 3. Special Operations 3.1 Spacecraft pointing We done the redefinition of the normal pointing on 2-Jul-99 pass 1. The purpose of this redefinition of the normal pointing is to move the solar image 40" E on the CCD, ie S/C to the W by 40". This will reduce the exposure at the NW limb, where SXT has been suffering from dark-current artifacts. TARGET ANGLE-X -0.0857391 (DEG) TARGET ANGLE-Y 0.0158380 (DEG) BLOCK COMMAND ===> 81 00 F9 F1 00 F7 00 00 -0.385680 -0.946381 COMMAND NAME: S/C W.946 N.385 (offset angles in arcmin) -------------------------------------------------------------- 4. Errors and Problems 4.1 BCS Errors: None 4.2 SXT Errors: None -------------------------------------------------------------- 5. NASA Station Scheduling 5.1 Contact pass cancels/adds The following DSN/NASA passes were added/deleted: =================================================================== DSN/NASA Schedule Week Schedule Changes =================================================================== Real-time 27 1 cancel Final 28 6 cancel Preliminary 28 8 add Strawman 29 43 cancel Preliminary 29 7 cancel, 11 add Strawman 30 33 cancel =================================================================== 5.2 Data Transmission from NASA Ground Stations -(From /home/flare1/yohkoh/dsn_corrupt/99_27)--------------- 171 16 1101 missing requested 22-Jun no response requested 25-Jun same data requested 29-Jun Closed/ same data 179 74 1642 - 1656: No Data - Unusale data received, due to receivers problem. -------------------------------------------------------------- 6. KSC Pass Conflicts and Schedule In Week 27, 9 KSC contacts lost . In Week 28, 9 KSC contacts lost 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. This would aid in DSN scheduling. -------------------------------------------------------------- 7. Hikitsugi Items 7.1 Tohbans for week 28 SSOC: K.Aoki, T.Shimizu KSC: S. Yashiro, T.Tonooka 7.2 STT timer setting The next STT TIMER SET is due on pass 1 on 6-Jul-99. 7.3 Holiday Schedule The holiday will be July 11, 1999 (JST). 7.4 If possible, please schedule terminator opportunities on any weekend table (ie, if room permits). 7.5 KSC pass conflicts (from earlier weeks) 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. 7.6 Mainframe Replacement Mainframes will be replaced from 11-Jul(Sun) to 15-Jul(Thu). Caution when SSOC Tohbans make OPs. 7.7 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 ===