SSOC Tohban Report for Week 93_14 (5-11 April 1993) H. Miyazaki and N. Nitta Version 0.0 12-Apr-93 before the WOM Revised Version 1.0 13-Apr-93 0. Overview NIXT was initially planned to be launched around 18:05 UT on 8 April and SPARTAN, following the launch of Discovery on the 6th, was supposed to start observing on 9 April. However, because of one day slip of the shuttle launch that naturally led to an equal delay of SPARTAN observing, NIXT is now sheduled for launch around 17:15 UT on the 12th. We had hectic moments during the week to comply with this change. Otherwise, Week 93_14 saw peaceful operation, no SEUs for SXT or BCS, no problem with auto_toban, etc. Kano san has been very helpful making a command sequence (OP) for collaborations with NIXT. 1. Solar Activity We did not have high solar activity during the week. Except for the period between 18:00 on the 6th and 12:00 on the 7th, the GOES background level was generally below C1 (See Figure 1). The largest flare was M1.5. 2. Special Activities OG Upload on 8 April, Pass1 (930408-0721) Two new OGs were uplaoded. No. 115 S/C EAST (5.43') No. 116 S/C WEST (4.16'). These are for the planned coordinated observations with SPARTAN. They were tested on 8 April during the second and third passes. 3. SXT Table Write 5 April, Pass 1 (930405-0722) ``930405 T1 P1 CCD WARMUP 2'' 6 April, Pass 4 (930406-0930) ``930406 T1 P4 ARS1 LONG EXP'' 7 April, Pass 2 (930407-0723) ``930407 T1 P2 CCD CAL SEQ'' 8 April, Pass 2 (930408-0824) ``930408 T1 P2 SPARTAN TEST'' 8 April, Pass 4 (930408-1031) ``930408 T2 P4 ARS1 LONG EXP'' 11 April, Pass 4 (930411-0516) ``930411 T1 P2 SPARTAN OBS1'' 4. STT Timer Set After setting the STT timer on 5 April at Pass 2 (930405-0825), STT tracking has been confirmed to be OK. Next update should be done on 12 April. 5. SXT CCD Bakeout 5 April, Pass 1 (930405-0722): TEC off 5 April, Pass 4 (930405-1032): Heater on 6 April, Pass 1 (930406-0619): Heater off 6 April, Pass 4 (930406-0930): TEC on 6. Errors SXT BITMAP ERROR 7 April, Pass 4 SXT BITMAP ERROR 10 April, Pass 1 7. SXT Error Recovery Rehearsal for NIXT Yobi B ROG 44H SXT SETUP FLUSH ROG 45H SXT GUARD BAND ===> Full Recovery SXT CTL AUTO Tested 7 April, Pass 1 8 April, Pass 1 8. Problems 8.0 Security issues At one time we were unable to edit OP on mainframe 2 for 20 min, because a file used in OPOGEDT was locked by another user. Indeed, the accessibility of mainframe 2 over the network can allow access to some of the programs that can affect operation. For security reasons, we propose to forbid access to any operation-related utilities from outside ISAS. ---> Kosugi san will investigate this. 8.1 Minor ones o FAX machine at B toh occasionally became picky. o Flare1 laser printer gives lousy prints even after toner replacement. o The graphic printer (Versatec?) at KSC is reportedly working. o Telephone line to JPL was sometimes very noisy. o DSN Real-time mixed up Yohkoh and Asuka (and even Geotail) schedules. o We still need a small revision to op_first_guess handling DSN. o Same is true for cancel_prelim. o Visual diagram produced at SSOC is not of good quality. o Mainframe 2 was down on Sunday. Had to wait 30 minutes for restart. 8.2 Needs decision It is so frustrating and painful to have to organize into folders various printouts on flare1. One wonders how many people have actually benefitted from these printouts. Cron jobs on flare1 have sometimes done harm to network environment. We propose to abolish all the cron jobs on flare1 that print out GOES time profiles, optical pictures coming from NOAA/SEL, NOAA region information, Hawaii Stokes polarimeter data (may not have to do with flare1 cron). The reason is that these printouts do not deserve our efforts to file them in time order. Most of the stuff is already on line anyway and accessing it on a workstation gives you much more flexibility than looking at the printout. For example, one can say in IDL plot_goes,'2-apr-93 03:30','2-apr-93 06:00' to get GOES time profiles for a GIVEN interval. Incidentally, we are getting 3 second GOES digital data, which should be utilized more within the Yohkoh team. In addition, the most frequently-used routine "yodat" can access ground-based images from BBSO, Kitt Peak, NOAA (SOON), etc. Consult the User's Guide of IDL routines provided by LPARL. We may still benefit from a sunspot sketch FAX from NAOJ/Mitaka and region summary from Hawaii. But they should go to Bldg D for scientific planning. There may be no need for filing them, however. An equivalent of the Hawaii region summary is available on line. Try plot_nar,'5-apr-93'. ---> No objections. The cron jobs will be removed from flare1. 8.3 Most serious WE DEFINITELY NEED MORE USER-FRIENDLY AND PRACTICAL MANUALS. It would be a full-time job to write and maintain the manuals. As an example of difficulty, it took long time to figure out which manual contained necessary information, such as exact command names. Of course, an easier thing for a green Toban is to ask an experienced person every time he/she comes up with a question. However, that means that experienced people (not many in number) always have chance to be called, even on something trivial that can be found in some manual. If one could EASILY find necessary information in the manual, experienced people would find themselves free from distractions given by a novice. It is probably a good idea to have a committee within the team that is devoted to updating and maintaining manuals written in both English and Japanese. ---> Kosugi san and Watanabe san will spend a half day reviewing all the manuals that are scattered in the operation room and reorganize them with help of other experienced scientists. 9. Hikitsugi The present OP covers until the fifth pass on Monday, but we are planning to upload another one during the fourth pass that is specifically designed for NIXT. The same OP also covers 2 days, since Tuesday is scheduled to have no operation activities at KSC. For joint observations with SPARTAN, we made an offset pointing to the east during the first pass and to the west during the fourth pass on 11-Apr-93. We will go back to the normal position during the third pass on 12-Apr-93. T. Shimizu and G. Linford are currently scheduled for this week's SSOC tobans. However, both of them will be extremely busy in connection with setting up the new workstations. ---> At the operation meeting on 12 April 1993, it was complained that operation duties have not been shared evenly among the Yohkoh team members. Some people enjoy analyzing data without helping operation, whereas others, especially some of young graduate students, are allocated Toban jobs too frequently. Looking at those who are somehow exempt from operation work, the latter people tend to be demoralized. Kosugi san explained how difficult it is to allocate Tobans evenly among Yohkoh people, but he will come up with a more democratic plan, reviewing the past statistics of the toban rotation. It was also agreed that other duties such as SXT Chief Observers and Workstation Managers, etc. should be regarded as major contributions to operation, and that those people undertaking them do not have to do toban work as frequently as others. Finally, Kosugi san will try to introduce more help from NAOJ techinician type people. Tobans: KSC SSOC 5-11 April Hara, Takeda Miyazaki, Nitta 12-18 April Takeda, Fukushima Shimizu, Linford 19-25 April Fukushima, Choi Shibata, Sawa Recipients of Toban Report (based on Tsuneta/Hudson input) ops1: ogawara@flare12, tsuneta@flare1, kosugi@laputa.mtk.mao.ac.jp, watanabe@uvlab.mtk.nao.ac.jp, sakao@flare2, cdp@41887.dnet.nasa.gov, rdb%isasxc.dnet@isass0, as@41887.dnet.nasa.gov, acton@isass0, bruner@isass0, strong@isass0, lemen@isass0, nitta@isass0, hudson@isass0, slater@isass0, freeland@isass0, morrison@isass0, linford@isass0 ops2: hiei@spot.mtk.nao.ac.jp, shibata@spot.mtk.nao.ac.jp, uchida@dept.astron.s.u-tokyo.ac.jp, jlc@19709.dnet.nasa.gov, canfield@mamane.ifa.hawaii.edu, martens@isass0, myoshimori@solar.stanford.edu, kmarubashi%crlhir@rd.tksc.nasda.go.jp, suematsu@spot.mtk.nao.ac.jp, ichimoto@spot.mtk.nao.ac.jp, senome@helio_gw.nro.nao.ac.jp, akioka@planet.hi.crl.ac.jp, sxt@flare1, yohkoh@flare1, sakurai@spot.mtk.nao.ac.jp ops3: hara@flare1, hayashi@flare2, masuda@flare2, shimizu@flare1, hara@flare1, kano@flare2, yaji@flare2, morimoto@flare2, khan@apsun2.astron.s.u-tokyo.ac.jp, ahm@apsun2.astron.s.u-tokyo.ac.jp, suga@flare2, takahashi@uvlab.mtk.nao.ac.jp, yatagai@kugi.kyoto-u.ac.jp