SXT Status Report
                   Jan. 17, 2000, to Jan. 31, 2000 
                            (Weeks 04-05)

                        D. McKenzie, H. Hudson


SUMMARY

Activity was low, the Flare Genesis flight was a great success,
and Y2K bugs persisted.

SOLAR ACTIVITY

Four M-class flares, maximum sunspot area 380 (NOAA 8824, one of the
Flare Genesis targets) on Jan. 17; at the time of writing the level
of activity is extremely low. The huge equatorial coronal hole from
the end of December is back, with high-speed wind properly resulting
from it (see the nugget of 31-Dec).

OBSERVING CAMPAIGNS

The Flare Genesis telescope concluded its very successful flight with
a cut-down and soft landing on the Ross Ice Shelf not too far from
McMurdo. At the time of writing it seemed possible for the recovery
of the data tapes, but not the gondola this season. The second 
circumpolar balloon (Berkeley and Washington) also safely came back
on shore before cutdown.

Please see our webpages for more 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

No particular problems, except that another Y2K bug popped up to cause
a lot of head-scratching. It was then swiftly fixed. Spacecraft pointing
has been stable and there's been no need for an update.

SXT OBSERVING SEQUENCE TABLES

-------------------------------------------------------------
UT Date & Time                    Pass    Table ID
=============================================================
Tuesday   PM   18-Jan-2000 11:35     3    000118 P3 ARS2 FG
Wednesday PM   19-Jan-2000 13:29     4    000119 P4 ARS2 DKCAL
Thursday  PM   20-Jan-2000 08:34     2    000120 P2 ARS2 DIFF
Friday    PM   21-Jan-2000 10:28     3    000121 P3 ARS2 FG
Saturday  PM   22-Jan-2000 07:16     1    000122 P2 ARS2 FG

Monday         24-Jan-2000 05:56     2    000124 P2 ARS2 DKCAL
Tuesday        25-Jan-2000 07:50     3    000125 P3 ARS2 FG
Thursday       27-Jan-2000 03:07     1    000127 P1 ARS2 DIFF
Thursday       27-Jan-2000 08:14     4    000127 P4 ARS1 STD
Friday         28-Jan-2000 03:18     1    000128 P1 ARS1 STD
Sunday         30-Jan-2000 03:41     2    000130 P2 ARS1 STD

============================================================

SCIENCE

January 21: "Motions Above an LDE Arcade" - follows up on last 
year's discovery of flows above arcades. The movies here are
good ones! 

January 28: "Homage to Flare Genesis" - a bit of a reminiscence
about the Stratoscope balloon, a predecessor to the Hubble 
Space Telescope and the last previous U.S. balloon-borne 
telescope. Flare Genesis is a lot more sophisticated and worked
a lot sooner!

The full list of 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 .

SEMINARS

None - we've adopted the rule that a majority of the seminar
organizing committee has to be in residence at ISAS simultaneously.

PERSONNEL

H. Hudson returned from the sigmoids workshop.

TOHBANS (spacecraft operators)

Tohbans for week 04

SSOC:   M. Miyashita, Y. Hanaoka 
KSC:    T.Yamasaki, W. Yoneshima 
SXT_CO: D. McKenzie 
SXT_SW: -


Tohbans for week 05

SSOC:   J. I. Khan, M. Otogawa 
KSC:    W. Yoneshima, M. Hata 
SXT_CO: D. McKenzie, H. Hudson 
SXT_SW: -