SSOC Tohban Report for Week 14 (1 April - 5 April 1997) SSOC : S. Tsuneta & S. Savy KSC : M. Shimojo & S.Kubo 0. Meeting Attendance: T. Watanabe, L. Acton, D. Alexander, L. Culhane, S. Savy, Hara, Y. Saito, A. Sterling, C. Foley, Sawa 1. Solar Activity: Solar activity increased significantly last week. 7 C-class flares occurred, four of them on April 1st. 2. Standard Operation: 2.1 SXT Table Uploads: ------------------------------------------------------------ Pass ID Pass # Table ID ------------------------------------------------------------ Tue 970331-1444 5 970331 P5 ARS1 DKCAL Wed 970401-1238 3 970401 P3 ARS1 STD+DIFF Wed 970401-1341 4 970401 P4 ARS1 STD Thu 970402-1238 4 970402 P3 ARS1 STD ------------------------------------------------------------ 2.2 STT timer setting: The STT timer was set during pass 2 (ID: 970401-1238) on 01-Apr-97 (Tue). 2.3 Offpointing for Terminators ----------------------------- Date Time S/C Pointing ----------------------------- no offset pointing ----------------------------- 3. Errors and Problems 3.1 BCS Errors and Problems: No BCS errors were detected last week. 3.2 SXT Errors and Problems: None 3.4 Others None. 4. DSN Communications: 4.1 DSN Final schedule for W15: No passes were canceled. 4.2 DSN Preliminary schedule for W16: No passes were canceled by SSOC. 4.3 DSN Strawman schedule for W17: 25 passes were canceled. 4.4 Data Transmission from DSN: (/home/flare1/yohkoh/dsn_corrupt/97_14) 076 66 0945 corrupted tape Requested 19 Mar. no response tape Requested 25 Mar. no response tape Requested 31 Mar. Closed/correct data 078 17 1829 corrupted tape Requested 21 Mar. no response tape Requested 25 Mar. no response tape Requested 31 Mar. Closed/correct data 078 17 2013 corrupted tape Requested 21 Mar. no response tape Requested 25 Mar. no response tape Requested 31 Mar. Closed/same data 079 46 1310 blocks differ with FAX Requested 25 Mar. no response Requested 31 Mar. Closed / correct data 082 66 0629 not received Requested 31 Mar. Closed /No data 085 76 1033 blocks differ with FAX Requested 31 Mar. Closed / correct data 085 76 1216 blocks differ with FAX Requested 31 Mar. Closed / correct data 085 17 1714 corrupted tape Requested 31 Mar. Closed/same data 5. YOHKOH/ASCA/AKEBONO/HALCA Pass Conflicts at KSC: 5.1 Canceled passes for W14, 15 Week 14: 12 passes were canceled for HARCA. Week 15: 10 passes will be canceled for HARCA. 6. Special Operations: There was an HXT calibration on pass 1 on 4-Apr-97 (ID: 970404-0826), and on passes 1 (ID: 970405-0927) and 2 (ID: 970405-1030) on 5-Apr-97. 7. Holiday Schedule: The next holiday will be 13-April-1997. 8. Hikitsugi Items: 8.1 Tohbans for W14 SSOC: Y. Saito & S. Yashiro KSC: M. Shimojo & M. Yamamoto 8.2 STT Timer setting The STT timer set is due on Tuesday (08-Apr.-97). 8.3 Sirius Data Nothing to report. 8.4 Suggestion to DSN selection rule: mail from JPL I understand that you access RASM and choose the passes that are made available to you. We would like you to use the Wallops (WFF) passes as much as possible. In other words, if a pass from one of the DSN sites (Goldstone, Madrid or Canberra) can be substituted by a WFF pass, please use the WFF pass and delete the DSN pass, instead of vise versa. Please understand we are not asking you to give up any coverage but if the same coverage can be accomplished by using WFF instead of the DSN, we would like you to do so. (Albert Chang) 8.5 Changes in OP_FIRST_GUESS Lemen-san has made a modification of the op_first_guess to surpress Campaign obs. between the first and second passes of KSC on the next day. Now the version is 4.3 and it seems to be working well. Regarding other more important changes, please see the reports from week 10. 8.6 Manual The japanese Houben-manual was updated in W11, but the parts of the DSN-related jobs should be reviewed carefully. 9. Action Items 9.1 Week-42-A/I-1 /Lemen/ status: almost CLOSE? The new version (v4.3) of OP_FIRST_GUESS was installed week 09. This version tries to create more terminator opportunities. It's seemingly working excellent. After the revision work is done, all the changes should be included in the manual. 9.2 Week-07-A/I-1 /Hudson, Sawa/ status: OPEN Sawa-san raised the doubt that the CCD bake-out affect the temperature structure on YOHKOH and hence HXT calibration. H. Hudson investigated it and found that the temprature increase was negligible compared to the fluctuation caused by HV-off etc. Further investigation is in progress. 9.3 Week-08-A/I-1 /Hudson, Shimizu/ status: OPEN SXTSPT software started to give unnecessary warnings after its revision about one month ago. Fujitsu poeple are working on it. 9.4 Week-10-A/I-1 /Shimizu/ status: OPEN There is no manual describing how to get ORBIT TIMER command for ``ORBIT TIMER ENA'' OG. Need a brief manual for next eclipses. ---end of report