----------------------------------------------------------------- SSOC Tohban's Report for Week 45 (03 Nov 1997 - 09 Nov 1997) ----------------------------------------------------------------- SSOC : Kumagai & Watanabe KSC : Kubo & Kasahara 0. Meeting attendance (in alphabetical order): Bargatze, Kosugi, Nitta, Ogawara, Sawa, Sterling, Watanabe 1. Solar Activitity Solar activity increased much during the week thanks to the active region NOAA 8100: Remarkable growth occurred in NOAA 8100 (S19W19) on Nov 03/15:30. Since the X9.4 proton flare at 11:55 UT, NOAA 8100 has reduced its sunspot area and simplified/weakened most of its magnetic structure. Despite the indications of decay, it is prudent to expect one or two moreflare events of up to class M5 before NOAA 8100 disappears from the visible disk (BEALERT). 2. Standard Operation: 2.1 SXT Table Uploads: The following SXT tables were uploaded last week. ------------------------------------------------------------ Pass ID Pass # Table ID ------------------------------------------------------------ Monday 971103-0620 2 971103 P2 ARS1 STD+DKEXP Friday 971107-0515 2 971107 P2 ARS1 DKCAL Saturday 971108-0516 2 971108 P2 ARS1 STD Monday 971110-0414 2 971110 P2 ARS1 STD ------------------------------------------------------------ 2.2 STT timer setting: The previous tohbans set the STT timer during pass 4 on Nov 03, Monday UT (971103 -0826) and it has not been changed since then. 2.3 Off-pointing for Terminators : None 2.4 HXT, BCS, and WBS calibrations : None 3. Errors and Problems 3.1 SXT Errors and Problems: No SXT errors occurred this week. 3.2 BCS Errors and Problems: No BCS errors occurred this week. 4. DSN Communications: 4.1 DSN Final Schedule for W45: One pass was cancelled by SSOC tohbans. 4.2 DSN Final Schedule for W46: No passes cancelled. 4.3 DSN Preliminary Schedule for W47: No passes cancelled. 4.4 DSN Strawman Schedule for W48: The meeting for ASCA pass conflicts resolution was held on Nov 7. Twenty-eight (28) passes were cancelled by SSOC tohbans. 4.5 Data Transmission from DSN: (/home/flare1/yohkoh/dsn_corrupt/97_45) 294 66 2358 not received Requested 28 Oct. no response Requested 31 Oct. Closed/ Correct data *298 66 2328 not received Requested 28 Oct. no response Requested 31 Oct. Closed/ Give up *299 66 2203 not received Requested 28 Oct. no response Requested 31 Oct. Closed/ Give up 300 80 0437 not received Requested 31 Oct. Closed/ Correct data 301 66 2240 not received Requested 31 Oct. Closed/ Correct data 303 76 0533 corrupted tape Requested 31 Oct. Closed/ Give up 304 76 2318 the blocks differ with email Requested 06 Nov. 306 76 0302 the blocks differ with email Requested 06 Nov. 307 74 1204 the blocks differ with email Requested 06 Nov. 308 80 2106 corrupted tape Requested 06 Nov. * DOY-298 2328,DOY-299 2203 Madrid :No data due to DSN antenna problem. 5. KSC Pass Conflicts and Schedule 5.1 YOHKOH/ASCA/AKEBONO/HALCA Pass Conflicts at KSC: Eight (8) Yohkoh passes are lost for week 46. 5.2 Future Schedule: None 6. Special Operations: None 7. Hikitsugi Items: 7.1 Bug in op_first_guess SSOC tohbans should be aware of a bug in op_first_guess. "% OP_START_END: Problem with detection of LOS/AOS/DSN Repro Events" appears when we have close enough contacts (more than two downlinks in an orbit). We avoided the problem, when using op_first_guess, by responding to "Change any standard op_first_guess options?" by choosing yes, then in response to "Enter BDR optimization (1 or 2), by choosing 1. 7.3 Tohbans for W46 SSOC : Bargatze & Sterling KSC : Kubo & Sasaki 7.4 OP and Command Sheet Status The command sheets and the OP for Monday (10-Nov-97) have been created, checked, and transferred to KSC. 7.5 STT timer setting STT timer setting is due on 11 Nov, Tuesday. Hard copy of the SOP/SAOCS is already available. 7.6 Holiday Schedule: The next holiday will be 16 Nov, Sunday. 7.7 OPOGEDT ----From W37 report ---------------------------- We continued to use the revised version of OPOGEDT. (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 CAUTION : The account, `s80670', for FTP transfering OP from main frame is used. This account's password, as well as s80671, must be changed every month, same as s88239's one!!! ***** 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. 7.8 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. --------------------------------------------------------------------------- 7.9 Sirius Data Nothing to report. 7.10 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) --------------------------------------------------------------------------- 8. Action Items 8.1 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. 8.2 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. 8.3 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 -------------------------------------------------------------------------------