SSOC Tohban's Report for Week 07 (08-Feb-99 -- 14-Feb-99) SSOC : R.Kano, M.Sawa KSC : S.Akiyama, T.Ishii 0. Meeting Attendance L.Acton, H.Hara, H.Hudson, R.Kano, J.Khan, T.Kosugi, Y.Ogawara, M.Sawa, G.Slater, T.Watanabe -------------------------------------------------------------- 1. Solar Activity Solar activity gradually increased through the week. The background level changed from B up to C1-level. There was one M-class flare (M1.5) at the Yohkoh-night on 12-Feb, and some late C-class flares. -------------------------------------------------------------- 2. Standard Operations 2.1 SXT Table Uploads The following SXT tables were uploaded in week 07. ===================================================== UT Time Pass Table ID ===================================================== 08-FEB-99 04:56 1 990208 P1 ARS1 TERM 06:39 2 990208 P2 ARS2 STD 09-FEB-99 05:13 2 990209 P2 ARS2 DARKCAL 10-FEB-99 05:29 2 990210 P2 ARS2 DIFF 11-FEB-99 04:02 2 990211 P2 ARS2 STD 13-FEB-99 04:33 2 990213 P2 ARS1 STD ===================================================== 2.2 STT Timer setting The STT timer was set during pass 2 on 09-Feb-99 (Tuesday UT). The next timer setting should be done on 16-Feb-99 (Tuesday UT). -------------------------------------------------------------- 3. Errors and Problems 3.1 BCS Errors We found a BCS error ( MEM CHK SUM ) at pass 1 on 10-Feb-99, 990210-0308. BCS Recovery procedure was successfuly executed at the same pass. 3.2 SXT Errors no error 3.3 NASA Tracking Stations Nothing to report. -------------------------------------------------------------- 4. Special Operations 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 =================================================================== Final 07 1 passes deleted by DSN Final 08 2 passes deleted by SSOC & 1 pass by DSN Preliminary 09 no passes deleted by SSOC Strawman 10 75 passes deleted by SSOC =================================================================== 5.2 Data Transmission from NASA Ground Stations -(Refer to /home/flare1/yohkoh/dsn_corrupt/99_07)------------ * 026 17 0845 not received Requested 02 Feb no response Requested 05 Feb Closed/ NO DATA 032 76 0157 40% corrupted tape Requested 05 Feb no response tape Requested 10 Feb * 026 17 0845 No Data DR# G04560 --Software/MPA open unable to move antenna to point, had no alarms even though had interface with MPA. Attempted to move antenna manually without success. Rebooted MPA and had loss of I/F with MPA with "FAILED W/D" alarm. Perfomed complete reboot of MPA/MPR to clear problem but not in time to recover any data. -------------------------------------------------------------- 6. KSC Pass Conflicts and Schedule In week 07, we gave five contacts to Asuka, five to Haruka, and one to Akebono. In week 08, we will give eight contacts to Asuka, one to Haruka. -------------------------------------------------------------- 7. Hikitsugi Items 7.1 Tohbans for week 08 SSOC: Khan, Akita KSC: Ishii, Kawashima 7.2 STT timer setting The next timer setting should be on Tuesday, 16-Feb-99 (UT) 7.3 Holiday Schedule The holiday in week 08 will be on Sunday, 21-Feb (JST). 7.4 Eclipse on 16-Feb-99 The solar eclipse occurres on 16-Feb-99. Yohkoh encounters two events during day time. R.Kano and T.Watanabe will prepare some special commands for the Yohkoh orbital timer. 7.5 GEOTAIL operation at KSC There will be the following GEOTAIL operations at KSC. 2/28 13:00 - 20:00 UT 3/ 1 14:00 - 18:30 UT Three Yohkoh contacts will conflict with the operations. It will be negociated at the Thursday meeting in a few week. ====== The following is the same as the previous week's report. ====== 7.old-1 Manual and Checksheet A new version of the English Tohban Manual was generated during the week, along with a corresponding new Tohban Checksheet. The new (and all future) Tohbans are requested to note any changes or mistakes in the manual, and to notify A. Sterling of the changes. If the changes involve the DSN procedures or the ~yohkoh/wallops/README file, Hugh Hudson san should also be notified. Please include your name (or initials) next to your suggested corrections. Current Version Yohkoh Tohban Duties Manual Rev. 1-Feb-99, A. Sterling README (Manual for Wallops/DSN Operations) Ver.5.2 28-Sep-98, H. Hudson The Japanese SSOC Tohban Manual was last modified on 23-Nov-98 by Ishii and Ichimoto san-tachi. 7.old-2 Some Problems in OP_FIRST_GUESS - NASA tracking passes Hudson san has modified DSN_INPUT.PRO to take care of an op_first_guess problem in picking up some NASA passes occurring near 0 hours UT (see week 98_37 SSOC report for a detailed description of the problem). All seems to be fine now, but for a while Tohbans should double check that all the passes assigned to us by NASA in the latest final schedule are actually included in the OP. - Maximum Elevation In determining zenith passes, Tohbans should use the maximum altitude listed in the Weekly Visible Diagram, rather than the value on the command sheets. (See week 99_04 SSOC Tohban report for more details). 7.old-3 DSN Pass Additions (from week48_98 report) Pass addition requests can now conveniently be made (preferably at the Preliminary Schedule stage) using the add_dsn routine. See the wallops directory README file, and the Tohban Manual section on DSN Scheduling. ---------------------------------------------------------------------------- 8. Action Items 8.1 Further software development. Status CONTINUING. It would be greatly appreciated if the SSOC tohbans could recommend any software development that they think will save future tohbans time and which improves the reliability of their work. 8.2 Week-48-A/I-1 /Hudson/status AJAR. PRINT_OGALL still does not work well. Hudson will fix it. 8.3 DSN Santiago Station / Ogawara and Hudson/ CLOSED DSN Santiago Station(#74) has been not available since 1 Oct. 1998. We get strawman listings and are trying to confirm that these are really to be ignored. The policy may switch. (HSH, 22-Jan-98) Since the negotiations between our and NASA, DSN Santiago Station(#74) will be available for YOHKOH and ASCA. However, the duration of reserving tracking support for Yohkoh is not fixed. (M.S, 8-Feb-99) DSN Santiago Station(#74) is available for YOHKOH and ASCA. The duration of reserving tracking support for all NASA mission including Yohkoh and ASCA is two hours/day. (Ogawara, 15-Feb-99) 8.4 Wallops pass conflicts between ASCA and Yohkoh. / Hudson We have determined that the Wallops staff can resolve these conflicts. It is possible (and likely) that Wallops can handle both satellites simultaneously (HSH, w04). === END ===