02 May 1998 David McKenzie SXT CHIEF OBSERVER'S REPORT AND TABLE PLAN CHIEF OBSERVER'S REPORT for Week 18 27-Apr-98 to 02-May-98 SOLAR ACTIVITY Solar activity was moderate, with one X flare (Apr 27) and two M flares (Apr 29 and May 01). All three were generated by active region NOAA 8210, the first two (and maybe the third?) were associated with Earth-directed CMEs. SXT INSTRUMENT STATUS SXT has been working fine, no problems were reported. SXT SCIENCE For Web material see Current Week: http://www.solar.isas.ac.jp/sxt_co/SXTweekly.html Index: http://www.solar.isas.ac.jp/sxt_co/index.html CAMPAIGNS There were no formal campaigns this week. PERSONNEL Nariaki Nitta, Hugh Hudson, and Dick Canfield departed. David McKenzie arrived. SEMINARS No seminar this week. SXT TABLE PLAN FOR WEEK 98_19 (04-May-98 - 10-May-98) SXT Chief Observer: McKenzie There are two Joint Observing Programs (JOPs) running this week, we will try to support at least one of them, if activity permits. Note that this plan is subject to change, some tables in the plan may be replaced by special JOP tables. The Chief Observer will try to keep everyone informed of changes/updates. ________________________________#_______________________________ JST Day UT Start Time Pass Table ID Monday 03-May-98 22:44 4 980503 P4 ARS1 STD Tuesday 04-May-98 17:53 1 980504 P1 ARS1 DARK Tuesday 04-May-98 23:02 4 980504 P4 ARS1 STD Wednesday 05-May-98 16:29 1 980505 P1 ARS1 DIFF Wednesday 05-May-98 19:54 3 980505 P3 ARS1 STD Thursday 06-May-98 21:55 4 980506 P4 ARS1 STD Friday 07-May-98 17:03 2 980507 P2 ARS1 STD Saturday 08-May-98 15:39 1 980508 P1 ARS1 STD Sunday 09-May-98 17:39 2 980509 P2 ARS1 STD Continuing requests: SSOC Tohban: On the weekly visible diagram, please mark the official five passes first and then cross out those passes that will be given to other satellites. That way we can keep the numbering straight in the Yohkoh software system. SSOC Tohban: SXT operations do not currently include terminator off- pointing. It is unnecessary this week to ask the SXT Chief Observer for terminator off-pointing information. KSC & SSOC Tohbans: If any KSC passes are likely to be cancelled (for example due to a typhoon) or an SXT table cannot be uploaded for some reason, please telephone and e-mail the Chief Observer immediately. (sxt_co@isass0.solar.isas.ac.jp, copy to sxt_st@flare2.solar.isas.ac.jp). KSC Tohbans: In general flare mode supersedes table upload, ie if a flare is in progress please do not upload a new table, and contact the chief observer. Normally it is OK to go ahead with the planned table without change on the next pass, if it is available. Chief observers should keep an eye on this.