SSOC Tohban Report for Week 12 (17 Mar -- 23 Mar 1997) SSOC : S. Masuda, M. Ohyama & L. Bargatze KSC : K. Ichimoto & K. Kumagai 0. Meeting Attendance: Culhane, Sakao, Savy, Sawa, Shimizu, Sterling, Yasuno, Ohyama 1. Solar Activity: The Sun was quiet thoughout Week 12. The GOES X-ray flux slowly decreased from near B class level decaying to less than A class level by March 22. A small active region which passed the central meridian last week was still present as were several X-ray bright points. An active region was beginning to come into view on the East limb. 2. Standard Operation: 2.1 SXT Table Uploads: ------------------------------------------------------------ Pass ID Pass # Table ID ------------------------------------------------------------ Mon 970316-1548 2 970316 P2 ARS1 STD+LONG Tue 970318-0101 2 970318 P2 ARS1 DKCAL Wed 970319-0102 3 970319 P3 ARS1 STD+DIFF Thu 970319-1547 2 970319 P2 ARS1 STD+LONG Sat 970321-1445 2 970321 P2 ARS1 STD ------------------------------------------------------------ 2.2 STT timer setting: The STT timer was set during pass 4 (970318-0308) on 18 Mar 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: A BCS error occurred in Pass 970316-1445 and it was recovered on the next Pass 970316-1548. 3.2 SXT Errors and Problems: No SXT errors were detected last week. 3.3 Others The internet connection was down between KSC and Sagamihara on Thu, Mar 20th. The network was down only about one hour and there were no serious problems at that time. 4. DSN Communications: 4.1 DSN Final schedule for W13: Five passes were canceled. 4.2 DSN Preliminary schedule for W13: 1 pass was canceled by SSOC. 4.3 DSN Strawman schedule for W14: 32 passes were canceled. 4.4 Data Transmission from DSN:(/home/flare1/yohkoh/dsn_corrupt/97_12) 057 16 0448 corrupted tape Requested 28 Feb. no response tape Requested 04 Mar. no response tape Requested 10 Mar. no response tape Requested 14 Mar. Closed / correct data 064 16 1846 not received Requested 10 Mar. no response Requested 14 Mar. Closed / correct data 068 46 1450 not received Requested 13 Mar. Closed / correct data 068 46 1635 not received Requested 13 Mar. Closed / correct data 068 16 2359 not received Requested 13 Mar. Closed / correct data 076 66 0945 corrupted tape Requested 19 Mar. 078 17 1829 corrupted tape Requested 21 Mar. 078 17 2013 corrupted tape Requested 21 Mar. #10591- blocks count: 13679(65.8% less than) JPL FAX(19-Mar) : Antenna keyhole pass. 5. YOHKOH/ASCA/AKEBONO/HALCA Pass Conflicts at KSC: 5.1 Canceled passes for W11-12 Week 12: 1 pass was canceled for ASCA and 6 passes were canceled for AKEBONO. Week 13: 7 pass will be canceled for HARCA and no other passes were canceled. 6. Special Operations: Nothing. 7. Holiday Schedule: The next holiday will be 30-March-1997. 8. Hikitsugi Items: 8.1 Tohbans for W12 SSOC: M. Sawa & S. Yasuno & Agematsu KSC: K. Kumagai & S. Kubo 8.2 STT Timer setting The STT timer set is due on Tuesday (25th). 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 Santiago stations If tobans cancel Santiago passes used on 28, 29, and 30 March, please give notice of the deletion to Seko-san. 8.7 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 last week. 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-09-A/I-1 /Freeland, Slater/ status: Open "No GOES Event Data Available" in goes_summary plot. GOES event data has not been created since week 3 of this year. Tohbans is asking Freeland-san (via Slater-san) to fix the problem. 9.5 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. 9.6 Week-12-A/I-1 /Shimizu/ status: Open ``cancel_dsn'' command doesn't be used on flare14. Shimizu-san will investigate the cause. Please execute the command on flare20. ---end of report