SSOC Tohban Report for Week 27_95 (3 July - 10 July 1995) SSOC: Koshiishi, Bushimata KSC : Fujiki, Tonooka 1. Solar Activity ----------------------------------------------------- Solar activity was very low. There was no large flare from AR7885, AR7886. and AR7887. 2. Standard Operations ------------------------------------------------ 2.1 SXT Table Uploads : 9 tables --------------------------------------------------------------------- KSC Time (start:JST=UT+9) Pass# Table ID --------------------------------------------------------------------- 03-JUL-95 (18:34) 3 950703 P3 ARS1 DKCAL 04-JUL-95 (18:54) 3 950704 P3 ARS0 FILAMENT 05-JUL-95 (14:06) 1 950705 P1 QT CORONA 05-JUL-95 (20:56) 5 950705 P5 ARS0 FILAMENT 06-JUL-95 (14:24) 1 950706 P1 QT CORONA 06-JUL-95 (21:16) 5 950706 P5 ARS0 FILAMENT 07-JUL-95 (13:02) 1 950707 P1 QT CORONA 07-JUL-95 (19:52) 5 950707 P5 ARS0 FILAMENT 08-JUL-95 (13:20) 1 950708 P1 ARS1 STD+LONG --------------------------------------------------------------------- Every time a block command "BC 8C 05(HEX)" was also uploaded . This is for dumping SXT patrol images. 2.2 STT Timer Setting The STT Timer was set on 2(Mon) July (in UT; 950703-0620). The next setting is due on 10(Mon) July (in UT). 3. Errors & Problems ------------------------------------------------- 3.1 BCS Error A BCS error(BCS Memory CheckSum Error) was detected on 4(Tue) July, Pass 5. The BCS Recovery plan was successfully executed in the same pass. 3.2 SXT Error A SXT error(SXT Bitmap Error) was found in Pass 2 on 5(Wed) July, and were succeedingly recovered by the command Yobi-C. 3.3 Data Lost at Santiago Station The operation of Santiago station was listed in the final W26 schedule and the OP on DOY 180(29 June) included the down-loading operation at Santiago station. But the operation time was 1047(BOT)-1058(EOT) and was outside the normal supporting time for YOHKOH/ASCA at the station. We asked JPL whether Santiago station received the data, or not. They responded that Santiago did not support the pass. Then, the data sets through 083055-105703 29(Sat) June were lost. 3.4 Data Reformat KSC tohban reported that they could not confirm the reformat of the real/playback data since 30(Fri) June. The cause of this problem was reported on 6(Thu) July. 4. DSN Communications ------------------------------------------------------ 4.1 DSN Strawman Schedule for W30 We cancelled 41 DSN contacts from the strawman schedule for W30. 4.2 DSN Forecast Schedule for W29 We cancelled 4 DSN contacts from the forecast schedule for W29. 4.3 DSN Final Schedule for W28 No cancellation request for W28 was sent in last week. 4.4 DSN Final Schedule for W27 We did not requested the real-time cancellation for W27 in last week. 4.5 Re-transmission Requests We sent the re-transmission request for data as follows; DSS 16 172/0427-0437 DSS 16 180/0152-0202 DSS 16 180/0334-0345 DSS 16 180/0519-0530 DSS 16 181/0030-0039 DSS 16 181/0212-0221 DSS 16 181/0355-0405 DSS 16 182/0558-0808 DSS 16 183/0617-0626 DSS 16 184/0454-0503 DSS 16 185/1842-1853 DSS 46 180/2032-2042 DSS 46 181/0142-0149 DSS 46 181/1908-1919 DSS 46 181/2051-2102 DSS 46 184/1823-1834 DSS 46 184/2007-2017 DSS 46 185/1842-1853 DSS 66 173/0023-0034 DSS 66 180/1805-1815 DSS 66 184/1557-1605 DSS 74 180/1047-1058 DSS 76 179/0019-0031 DSS 76 179/0509-0519 We re-requested to transmit the following data sets; DSS 16 174/0523-0534 DSS 16 180/0152-0202 DSS 16 180/0334-0345 DSS 16 180/0519-0530 DSS 16 183/0617-0626 DSS 16 184/0454-0503 DSS 66 173/0023-0034 DSS 66 184/1557-1605 DSS 76 179/0019-0031 4.6 START/STOP Time in Post-Pass/Transmission Report The START/STOP time of the several Post-Pass/Transmission Report received in W27 were the planned START/STOP times of the DSN operation instead of the actual dump times used before. Katano_san was confused in this case and we requested JPL to use the former START/STOP time. They responded it after 6(Thu) July. 5. YOHKOH/ASCA/SFU Pass Conflicts at KSC ---------------------------------- In week 27, The six KSC passes were lost because of the conflicts with ASCA and SFU. In week 28, There exist 11 conflicts with ASCA and SFU. 6 of them will be lost. 6. Special Operation 6.1 Offset Pointing (Terminator Images) 03-JUL-95 08:11 OG34 03-JUL-95 11:24 OG34 03-JUL-95 14:39 OG34 03-JUL-95 16:17 OG34 03-JUL-95 22:46 OG34 04-JUL-95 06:51 OG35 04-JUL-95 21:27 OG35 05-JUL-95 00:41 OG35 05-JUL-95 07:10 OG36 05-JUL-95 08:47 OG36 05-JUL-95 21:45 OG36 05-JUL-95 23:22 OG36 06-JUL-95 02:36 OG36 06-JUL-95 07:28 OG85 06-JUL-95 09:05 OG85 06-JUL-95 13:57 OG85 06-JUL-95 22:03 OG85 07-JUL-95 01:18 OG85 07-JUL-95 02:55 OG85 07-JUL-95 04:31 OG86 07-JUL-95 06:09 OG86 07-JUL-95 09:24 OG86 6.2 Curtailment of the KSC Operation Because of the conflicts with ASCA, the operation time of Pass 4 and Pass 5 on 7(Fri) July was Curtailed by a minute and two minutes respectively. 7. Holiday Schedule The next holiday will be Sunday, 16 July. 8. Attendance of the MON(Monday Operation Meeting) on 10(mon) July Alexander, Hara, Hashizume, Hori, Hudson, Khan, Koshiishi, Linford, Masuda, Nagata, Ogawara, Sakao, Sawa, Watanabe, Yoshida (alphabetical order) ************************************************************************** 9. Hikitsugi Items -------------------------------------------------- 9.1 Tohbans for Week 28 KSC : Tonooka and Magara SSOC : Hori and Nagata 9.2 ASCA/SFU Pass Conflicts (KSC) Toward the regular use of Santiago Station, we negotiate KSC schedules up to 3 weeks ahead. The weekly meeting with ASCA/SFU is held by Nagase-san (ex.2611) on Thursday from 13:30 on A-6F. In this meeting, please fix final KSC schedule on week 29 and negotiate about KSC pass conflicts with ASCA/SFU on week 31. 9.3 DSS-74(Santiago) Passes As the data transmitted from Santiago station was correct, operations for Santiago station are done in the same mode as other DSN stations since week 24. Note that Yohkoh and ASCA share at most 2 Santiago contacts in a day, because of the limitation of the operation time in Santiago. Santiago's committed support hours are 1300 to 2345 UT Monday through Thursday, and 1245 to 2330 UT Friday through Sunday. 9.4 DSS-74(Santiago) Transmitted Data Although the data seem OK now, SSOC tohbans should still be careful and send DSN detailed reasons when problems happen. 9.5 STT Timer Setting The next STT timer set is due on 10(Mon) July. 9.6 Terminators. The terminator-offpointing program will be continued this week. The SSOC tohbans will be required to manually insert the off-point OGs for the terminators into the OP tables following to suggestion by SXT_CO. After OP_FIRST_GUESS, SSOC tohbans should send drafts of OP to SXT_CO at D-tou. SXT_CO will send a request about terminators and associated offpoints if necessary. We are using the following offpoint OG's and are going through them in sequence cyclically. That is, change each time(day) to the next number please: OG 33 S/C W03 N00 (all OG numbers are decimal) OG 34 S/C W17 N00 OG 35 S/C W10 S01 OG 36 S/C W04 N00 OG 85 S/C W02 N17 OG 86 S/C W19 N01 OG 87 S/C W16 N00