2 June 1996 Nariaki Nitta Mark Weber Hugh Hudson SXT CHIEF OBSERVER REPORT AND TABLE PLAN SXT CHIEF OBSERVER'S REPORT for Week 22: 27-MAY-96 to 2-JUN-96 SOLAR ACTIVITY Solar activity continued to be extremely low. Big Bear reported on the fifth new cycle plage (with pores) since 10 May. SXT INSTRUMENT STATUS The vertical streak reported last week is no longer visible and an analysis is under way by Hugh Hudson to characterize its behavior. Apart from an SEU, SXT was in fine working order. CAMPAIGNS We switched to another X-ray bright point campaign with Karen Harvey and observed two regions specified by her. SEMINARS On Thursday, 30 May, we had a regular Yohkoh seminar. The speaker and title were: N. Nitta, "Superhot flares: a comparison between imaging and spectral observations." SXT TABLE PLAN FOR WEEK 23 (2-Jun-96 to 9-Jun-96) The Schmieder campaigns start on Monday, and we intend to prepare for this by doing the dark calibration table first. Then we will probably load two tables each day, as circumstances permit, to follow the different targets as coordinated with Meudon and SoHO. The table upload plan may change as the campaign unfolds. KSC Time (start) in JST Pass Table ID _____________(= UT + 9 hrs)______#_______________________________ Sunday 3-JUN-96 00:53 2 960602 P2 ARS1 DKCAL Tuesday 4-JUN-96 23:49 1 960604 P1 ARS0 STD+FIL Tuesday 5-JUN-96 04:57 4 960604 P4 ARS1 STD+LONG Wednesday 5-JUN-96 22:26 1 960605 P1 ARS0 STD+FIL Wednesday 6-JUN-96 03:33 4 960605 P4 ARS1 STD+LONG Thursday 6-JUN-96 22:44 1 960606 P1 ARS0 STD+FIL Thursday 7-JUN-96 03:52 4 960606 P4 ARS1 STD+LONG Friday 7-JUN-96 21:25 1 960607 P1 ARS0 STD+FIL Friday 8-JUN-96 02:28 4 960607 P4 ARS1 STD+LONG Saturday 8-JUN-96 23:22 2 960608 P2 ARS1 STD+LONG *** Please note that this table plan may change *** Dumping Patrol images: We request that KSC tohbans continue to dump a patrol image each time an SXT table is loaded to facilitate the study of optimizing ARS parameters for an awfully, awfully quiet period. SSOC TOHBAN, please fax the preliminary OP list to D-tou when it contains a terminator so that the Chief Observer can suggest which OG's to use. PREPARATION OF OGs: New OGs were made last week, but no terminator images have been taken since then. We may change OGs this again this week.