SXT Status Report July 23 - August 5, 2001 (Weeks 30-31) A. Takeda SOLAR ACTIVITY Solar activity has a little increased during these two weeks. In the week 30, two M-class flares were reported, while there reported three M-class and a bunch of C-class flares during the week 31. Yohkoh could observe some of them including M1.5 on 3-Aug., fortunately. OBSERVING CAMPAIGNS We supported the last run of the JOP 100 campaign on 23-Jul. No other campaign was scheduled for these weeks. Please see our webpages for details about campaigns past and future: http://isass1.solar.isas.ac.jp/sxt_co/sxt_catalog.html http://isass1.solar.isas.ac.jp/sxt_co/sxt_future.html SXT INSTRUMENT STATUS AND CALIBRATION ACTIVITIES After the 6 months interval, CCD bakeout was carried out on 26-Jul. This resulted in a slight decrease of dark current. TELEMETRY DOWNLINKS Week Wallops Santiago Goldstone Canberra Madrid NASA Japan 30 30 0 3 2 0 35 26 31 22 0 1 8 0 31 33 Kagoshima should average 6*5+2 = 32 and the NASA target is 7*6 = 42. SXT OBSERVING SEQUENCE TABLES ====================================================================== JST Day UT Date & Time Pass Table ID Monday PM 23-Jul-01 07:47 3 010723 P3 ARS2 STD+J100 Tuesday PM 24-Jul-01 04:24 1 010724 P1 ARS1 DIFF Tuesday PM 24-Jul-01 07:46 3 010724 P4 ARS1 STD Wednesday PM 25-Jul-01 07:45 3 010725 P3 ARS1 DARK Thursday PM 26-Jul-01 04:22 1 010726 P1 ARS1 BAKE Friday PM 27-Jul-01 04:21 2 010727 P2 ARS1 STD Saturday PM 28-Jul-01 04:21 2 010728 P2 ARS1 STD Monday AM 30-Jul-01 02:38 2 010730 P2 ARS1 STD Tuesday AM 31-Jul-01 00:57 1 010731 P1 ARS1 DARK Tuesday PM 31-Jul-01 06:00 4 010731 P4 ARS1 STD Wednesday AM 1-Aug-01 00:55 1 010801 P1 ARS1 DIFF Wednesday PM 1-Aug-01 05:59 4 010801 P4 ARS1 STD Thursday AM 2-Aug-01 02:36 2 010802 P2 ARS1 STD Friday AM 3-Aug-01 02:35 3 010802 P3 ARS1 STD* Saturday AM 4-Aug-01 00:52 2 010803 P2 ARS1 STD* -------------------------------------------------------------- Data reformatting is complete through June 23, week 25 of 2001. OBSERVING SEQUENCES: We have returned to the flare table with 1x1 (= 64x64 pix) FOV. Res Filter AEC --- ------ --- Full AlMg optimum, no saturation Half AlMg deep & saturated Qrtr AlMg deep & saturated Full AlMg optimum, no saturation Full Be optimum, no saturation Full AlMg deep & saturated This gives a 6-second cadence in full-res AlMgs, 12-second cadence in everything else. There are unsaturated f-res in 2 filters, and deep+saturated images in all three resolutions. SCIENCE NUGGETS: July 27: "A solar "island universe" looks at a group of magnetic regions clustering together into a sort of giant anemone-type structure. This structure does not seem to connect either across its boundaries, all of the same-polarity coronal hole, or outwards into the solar wind as a streamer. August 3: "Magnetic collapse and a flare" examines a possible example of implosion (field collapse) during a solar flare. Maybe... or maybe not... The full list of recent nuggets is kept on http://isass1.solar.isas.ac.jp/sxt_co/index.html and the current week's nugget also normally resides on http://isass1.solar.isas.ac.jp/sxt_co/SXTweekly.html For the complete nugget archive, see one of the following sites. http://isass1.solar.isas.ac.jp/sxt_co/index.html SEMINARS: The seminar this week featured reports from the CESRA meeting by K. Shibasaki (NAO) and H. S. Hudson (SPRC). Their titles are: "Signature of energy release and particle acceleration observed by the Nobeyama Radioheliograph" (KS) "Comments from CESRA" (HSH) PERSONNEL: Hugh Hudson departed. TOHBANS (spacecraft operators) for week 30: SSOC Tohbans : K. Shibasaki & K. Yoshimura KSC Tohbans : H. Komori & T. Miyagoshi SXT_CO: A. Takeda SXT_SW: J. Bartus TOHBANS (spacecraft operators) for week 31 SSOC Tohbans : K. Hori & Tet. Watanabe KSC Tohbans : T. Miyagoshi & K. Kawanabe SXT_CO: A. Takeda SXT_SW: J. Bartus