----------------------------------------------------------------- SSOC Tohban's Report for Week 39 (22 Sep 1997 - 28 Sep 1997) ----------------------------------------------------------------- SSOC : H. Hara & J-P. Wuelser KSC : S. Sano & Y. Iizuka 0. Meeting attendance (in alphabetical order): H. Hudson, S. Kubo, D. McKenzie, Y. Ogawara, M. Sawa, A. Sterling, T. Watanabe, J-P. Wuelser 1. Solar Activity: Solar activity continued to be moderate. The GOES X-ray level was at mid-B. Most of the activity was due to AR 8088, which newly emerged a week ago near the SE limb. It produced two M-class flares, and numerous C-class flares. The M-class flares (M5.9 and M3.0) both happened on Sep 24 during Yohkoh nights. Good observations of several of the C-class flares were obtained, among them a long duration event that was probably associated with the halo CME observed by SOHO. 2. Standard Operation: 2.1 SXT Table Uploads: The following SXT tables were uploaded last week. ------------------------------------------------------------ Pass ID Pass # Table ID ------------------------------------------------------------ Monday 970922-0517 4 970922 P4 ARS1 STD Tuesday 970923-0618 4 970923 P4 ARS1 DKCAL Wednesday 970924-0515 3 970924 P3 ARS0 JET Wednesday 970924-0722 5 970924 P5 ARS1 DIFF Thursday 970925-0619 5 970925 P5 ARS1 STD Saturday 970927-0207 2 970927 P2 ARS0 JET Saturday 970927-0413 4 970927 P4 ARS1 STD ------------------------------------------------------------ 2.2 STT timer setting: We set the STT timer during pass 4 on 23 Sep, Tuesday (970923-0618). The next STT timer setting is due on 30 Sep, Tuesday. 2.3 Off-pointing for Terminators : None 2.4 HXT, BCS, and WBS calibrations : On Sep 23 and 26, BCS acquired special calibration observations during Yohkoh night. 3. Errors and Problems 3.1 SXT Errors and Problems: 3.1.1 SXT Errors One SXT error occured at the second pass on 25 Sep (970925-0412). The error was recovered during the next pass (970925-0516). 3.1.2 SXT Table Cancellation The table that was planned to be sent at the fourth pass on 25 Sep was cancelled because of the SXT error recovery. The table was sent on the fifth pass. 3.2 BCS Errors and Problems: None 4. DSN Communications: 4.1 DSN Final schedule for W39: 1 pass was cancelled by the DSN. 4.2 DSN Final schedule for W40: 5 passes were canceled, these were too close to other DSN passes. 4.3 DSN Preliminary Schedule for W41: 14 passes were canceled, these were too close to other DSN passes. 4.4 DSN Strawman schedule for W42: 58 passes were canceled, these were too close to other DSN passes. 4.5 Data Transmission from DSN: (/home/flare1/yohkoh/dsn_corrupt/97_39) 245 76 0431 corrupted tape Requested 05 Sep. corrupted tape Requested 09 Sep. no response tape Requested 12 Sep. no response tape Requested 17 Sep. no response Requested 19 Sep. no response Requested 24 Sep. 246 80 0450 corrupted tape Requested 05 Sep. corrupted tape Requested 09 Sep. no response tape Requested 12 Sep. no response tape Requested 17 Sep. no response Requested 19 Sep. no response Requested 24 Sep. 246 76 0632 corrupted tape Requested 05 Sep. corrupted tape Requested 09 Sep. no response tape Requested 12 Sep. no response tape Requseted 17 Sep. no response Requested 19 Sep. no response Requested 24 Sep. 255 76 0046 not received Requested 19 Sep. no response Requested 26 Sep. 256 76 0104 corrupted tape Requested 19 Sep. no response tape Requseted 26 Sep. 256 80 0430 corrupted tape Requested 19 Sep. Closed/ correct data 259 76 2252 corrupted tape Requested 19 Sep. no response tape Requested 26 Sep. 263 16 0447 corrupted tape Requested 26 Sep. 265 76 0025 not received Requested 26 Sep. 267 76 2338 corrupted tape Requested 26 Sep. 4.6 DSN scheduling interface tasks change Starting past week, September 21, 1997, the scheduling interface tasks for Yohkoh and ASCA has been shifted from DSN to the Wallops Flight Facility (WFF). The E-mail mailing list has been updated. 5. KSC Pass Conflicts and Schedule 5.1 YOHKOH/ASCA/AKEBONO/HALCA Pass Conflicts at KSC: Week 39: 10 passes were canceled due to conflict with HALCA and AKEBONO. Week 40: 1 pass will be canceled due to conflict with HALCA. 5.2 Future Schedule: 6. Special Operations: None. 7. Holiday Schedule: The next holiday will be 5 Oct, Sunday. 8. Hikitsugi Items: 8.1 Tohbans for W40 SSOC : S. Kubo & M. Sawa KSC : Y. Iizuka & Y. Saito 8.2 OP and Command Sheet Status The command sheets and the OP for Monday (29-Sep-97) have been created. And the OP has already been transferred. 8.3 OPOGNEW instead of OPOGEDT ----From W37 report ---------------------------- We continued to use the revised version of OPOGEDT, OPOGNEW. OPOGNEW is the same as OPOGEDT except that the printing out of the OP is simpler. The SSOC tohbans should press the PF4 key (`print') on the mainframe and then print out the OP by typing: IDL> print_op ***** NOTE ******* Similarly, in order to print out the OG, type: IDL> print_ogall IDL> print_ogsel ***** These softwares are not available. See A/I ****** It is also possible to use the mainframe emulator on flare20 instead of the mainframe terminal for some situations: flare20% telnet mainf1 17 s88239 ex op(opognew) PF3 is {Esc}3 PF4 is {Esc}4 etc. --------------------------------------------------------------------------- 8.4 STT_PLOT ----From W37 report ---------------------------- It is possible to check the STT Tracking by using the routine `STT_PLOT': First make sure you are on the HOME directory of the yohkoh account then type: IDL> stt_plot (,'DD-MM-YY') This will plot a time variation of the STT output signal level. If the STT is working properly, the signal level should stay in between 400--800, and should vary only in the time period set by the timer. See sample plots in the tohban's manual. --------------------------------------------------------------------------- 8.5 Sirius Data Nothing to report. 8.6 Suggestion to DSN selection rule: mail from JPL ----Quoted from the previous week's report --------------------------------- 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 vice 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) --------------------------------------------------------------------------- 9. Action Items 9.1 Further software development 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. 9.2 Week-35-A/I-1 SSOC tohbans The SSOC tohbans should inspect the horizon maps sent by JPL and think about whether it would be possible to determine whether the acceptable minumum altitude (Is 10 degrees really the best estimate or is less accepatble?). Please refer to Hudson-san for further information. 9.3 Week-37-A/I-1 /Hudson/status open The following IDL softwares do not work well. Hudson-san will fix them. IDL> print_ogall IDL> print_ogsel end of report