SSOC Tohban Report for Week 26_95 (26 June - 3 July 1995) SSOC: M. Sawa, K. Shinoda KSC : K. Fujiki, S. Sano 1. Solar Activity ----------------------------------------------------- Solar activity was very low. There was no large flare from AR 7882. We would like to expect to the flares from AR 7885 and AR 7886. Today,I confirmed that C or M class flare occured on 2-july 00:00 (UT). 2. Standard Operations ------------------------------------------------ 2.1 SXT Table Uploads : 3 tables --------------------------------------------------------------------- KSC Time (start:JST=UT+9) Pass# Table ID --------------------------------------------------------------------- 26-JUN-95 (23:11) 4 950626 P4 ARS1 DKCAL 27-JUN-95 (18:22) 1 950627 P1 QT CORONA 28-JUN-95 (01:14) 5 950627 P5 ARS1 STD+LONG --------------------------------------------------------------------- Every time a block command "BC 8C 05" was also uploaded . This is for dumping SXT patrol images. 2.2 STT Timer Setting The STT Timer was set on June 26 (in UT; 950626-0722). The next setting is due on 3-July (in UT). 3. Errors & Problems ------------------------------------------------- 3.1 DSN Data Transmission trouble Most of the DSN data from Madrid,Camberra,and Goldstone downlinked on June 19-23 are collapsed,so we sent re-transmission requests to JPL for the collapsed data.Already these data was retransfered except only one data. Now we sent 2nd request to JPL. DSN data downlinked on and after June 24 have no problems. This problem seems to reside in data transfer between JPL and ISAS. 3.2 Reformat data On July 1,sxt chief observer could not receive the data from pass 2 and pass5 . It seem to problem from SIRIUS. 4. DSN Communications ------------------------------------------------------ 4.1 DSN Strawman Schedule for W29 We cancelled 49 DSN contacts from the strawman schedule for W29. 4.2 DSN Forecast Schedule for W28 We cancelled 24 DSN contacts from the forecast schedule for W28. 4.3 DSN Final Schedule for W27 We cancelled 5 DSN contacts from the final schedule for W27. 4.4 DSN Final Schedule for W26 We cancelled 1 DSN contacts cause of low elevation from the final schedule for W26. 4.5 Pass additions Jose Valencia requested that ISAS activate the Yohkoh X-band downlink to assist DSN X-band engineering and testing. This was discussed at the Monday operations meeting. 181 0117 0142 0149 0159 DSS-46 SOLA X/BAND ACQ 1324 C014 - 1A1 4.6 Re-transmission requests We sent a re-transmission request for data follows; DSS 66 169/23:06-23:17 DSS 16 170/05:31-05:41 DSS 66 170/04:15-04:24 DSS 16 170/07:12-07:24 DSS 66 170/21:43-21:53 DSS 16 170/08:57-09:08 DSS 66 170/23:25-23:37 DSS 16 170/10:40-10:51 DSS 66 171/02:51-03:01 DSS 16 171/04:09-04:17 DSS 66 171/22:01-22:13 DSS 16 171/05:49-06:00 DSS 66 171/23:44-23:56 DSS 16 172/04:27-04:37 DSS 66 172/20:40-20:48 DSS 16 172/06:08-06:19 DSS 66 172/22:21-22:32 DSS 16 172/07:52-08:03 DSS 66 173/01:46-01:57 DSS 16 173/04:45-04:56 DSS 66 173/20:57-21:08 DSS 16 174/05:04-05:15 DSS 66 173/22:40-22:52 DSS 16 174/06:47-06:59 DSS 66 174/02:06-02:16 DSS 16 174/08:32-08:42 DSS 66 174/21:17-21:28 DSS 16 175/03:41-03:51 DSS 46 171/01:53-02:02 DSS 46 174/23:45-23:54 DSS 16 172/04:27-04:37(2nd times) DSS 76 179/05:09-05:19(header is broken) 5. YOHKOH/ASCA/SFU Pass Conflicts at KSC ---------------------------------- In week 26, there exist 14 conflicts with ASCA and SFU. 6 of them will be lost. 6. Special operation 6.1 Offset Pointing (Terminator Images) 26-Jun-95 17:26 OG85 26-Jun-95 22:18 OG85 27-Jun-95 09:39 OG85 27-Jun-95 19:22 OG85 28-Jun-95 01:51 OG85 28-Jun-95 03:28 OG85 28-Jun-95 06:43 OG85 28-Jun-95 22:54 OG86 29-Jun-95 02:09 OG86 29-Jun-95 16:43 OG87 29-Jun-95 23:12 OG87 30-Jun-95 02:27 OG87 30-Jun-95 07:18 OG33 1-Jul-95 01:08 OG33 1-Jul-95 09:14 OG33 6.2 OG WRITE and REWRITE For the test of DSN X-band downlink,we used the TMX-ON/OFF OGs by the slots of 43/44(decimal),and after used,change to back(the 43/44 slots to HXT CAL ON/OFF). 7. Holiday Schedule The next holiday will be Sunday, 09 July. ************************************************************************** 8. Hikitsugi Items -------------------------------------------------- 8.1 Tohbans for Week 26 KSC : Tonooka and Fujiki SSOC : Bushimata and Koshiisi 8.2 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 28 and negotiate about KSC pass conflicts with ASCA/SFU on week 30. 8.3 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. 8.4 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. 8.5 STT timer setting The next STT timer set is due in the evening of Monday, July 3 (JST). 8.6 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 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