SSOC Tohban Report for Week 48 ( 28 November - 4 December 1994 ) SSOC: S. Enome, M. Ohyama KSC : Y. Hanaoka, T. Takano 1. Solar Activity ------------------------------------------------------------ Solar activity was low this week, since, for example, no flare larger than C-class was not observed. NOAA7811 went behind the west limb. New active regions appeared on the east limb. 2. Standard Operation -------------------------------------------------------- 2.1 SXT Table Uploads JST day Pass NO. Table ID --------------------------------------------------- 28-Nov-94 Pass 3 '941128 P3 ARS1 DKCAL' 29-Nov-94 Pass 2 '941129 P2 ARS1 STD+LONG-6' 30-Nov-94 Pass 2 '941130 P2 FILAMENT' 1-Dec-94 Pass 3 '941201 P2 ARS1 STD+LONG-2' 2-Dec-94 Pass 3 '941202B P2 ARS1 STD+LONG-3' 3-Dec-94 Pass 2 '941203 P2 ARS1+FIX FILMNT --------------------------------------------------- 2.2 S/C off pointing OGs in the OP, which are for the offpoint terminators Nov 30 03:59 - 04:10 UT : S 8' (Mg3) 20:12 - 20:30 UT : S 8' (Mg3) Dec 2 15:57 - 16:20 UT : E 8' (Al.1) We rewrite [E 4'] to [E 8'] 19:12 - 19:30 UT : W 8' (Al.1) We rewrite [W 4'] to [W 8'] 2.3 STT Timer Set STT Timer was set on Monday (Pass_2 on 28-Nov-94). 3. Special Operation ------------------------------------------------------- 3.1 Terminator images We collected the offpoint terminator images as listed in 2.2. 3.2 BCS CAL BCS SRC CAL : 2-Dec-94 11:24:16 - 11:34:56 UT by OP BCS STIM CAL : 3-Dec-94 pass3(941202-0930) 14:35:25 - 14:42:59 UT 4. Errors & Problem -------------------------------------------------------- 4.1 Failuer of SXT Table Upload * An SXT table was uploaded at Pass3 on 28 Nov. But KSC toban couldn't check it during the pass , because we forgot the following command : 'SXT CHK DIS, MANU QT H, SXT CHK ENA, ACS MOD H '. The SXT table was uploaded at Pass5 again. ( Pass4 was lost because of conflict with ASCA .) * When an SXT table was uploaded at Pass2( 12:28-12:42 UT : 941201-0825) on 1 Dec, a discrepancy was found between the SXT tables of ISAS computer and YOHKOH. The table of KSC MS computer was same as that of YOHKOH. : New SXT tables were sent from ISAS to KSC twice. Acton-san sent : : second table to KSC at about 04:25, but it was at about 13:35 : : that it was actually sent to KSC. : : The cause of this trouble has not been clearly understood yet. : Acton-san sent the SXT table to KSC again after pass 2. It was uploaded correctly next pass ( pass 3 ). 4.2 KSC control desk trouble KSC control desk was trouble at pass2 on 3 Dec (941203-0723). A frequency which is usually used to track YOHKOH during the operation couldn't be used at that time. YOHKOH was locked after searching locally. 5. DSN Communications ------------------------------------------------------ 5.1 DSN Strawman Schedule for W51 The strawman schedule for W51 arrived on Friday. We cancelled 10 DSN passes in the schedule. There were 15 DSN conflict in the schedule. 5.2 DSN Forecast Schedule for W50 We cancelled four DSN passes of W50, because intervals between them and previous passes are short. 5.3 DSN Final Schedule for W49 We cancelled three DSN passes of W49. DOY DSS BOT EOT ------------------------- 339 16 0907 0915 * This pass is between KSC pass1 and pass2. 339 46 2236 2246 * An interval between this pass and previous pass is about ten minutes. 344 16 2306 2314 * An interval between this pass and previous pass is about fifteen minutes. 5.4 Re-transmission requests DOY 330 07:21 - 07:31 DOY 330 09:35 - 09:44 Both of these data set were broken, so we requested the re-transmission. We received them by Dec.1 . 5.4 Another requests * We had received data ( DOY 325 09:41 - 09:49 ),but we had not received a FAX about it. So we requested sending the FAX. We received it. * We received a FAX about DOY 328. It says that the start and end time of DSS 66 DOY 328 are same ( 04:20:21 ). So we requested sending the FAX with the correct time. We received it on Dec 2. The Correct Time : 04:14:53 - 04:20:21 UT 6. Yohkoh/ASCA Pass Conflicts -------------------------------------------- * Three KSC passes were lost during the week 48 because of conflict with ASCA. ( Pass_4 28-Nov , Pass_5 29-Nov, and Pass_4 2-Dec ) * Two KSC passes will be lost during the week 49. ( Pass_5 of 7 and 8 , Dec ) 7. Holiday Schedule ------------------------------------------------------- The next holiday will be 11-Dec-94. 8. Hikitsugi Item --------------------------------------------------------- 8.1 Tohbans for Week 49 SSOC: Dhani and H. Tonooka KSC: T. Takano and M. Takahashi 8.2 STT Timer Set The next STT timer set is due on Monday (5-Dec-94). It has already been prepared. Please prepare the next one. 8.3 Terminator images ( Offpoint terminator images ) * An interval between 'DAY' and 'CMPN OBS OFF' OGs is 6 blocks. 'OP_FIRST_GUESS' says that it is 4 blocks, so tohban-sans have to change it to 6 blocks on the mainframe. * Add the offpoint OG and the normal pointing OG in the OP during the terminator manually. Next tohban-san should ask the SXT cheif observer which offpoint OG will be added. 8.4 New Offpoint OGs New offpoint OGs should be prepared.