GENERAL

Activity continues to be quite high, with many C flares, several M flares, and still no X flares, supporting the Hudson heuristic: "Big flares only occur in the rising and declining phases of solar activity."

SXT TECHNICAL

The new terminator aquisition cycle has begun this week following the Yohkoh repoint on 2 July. The Sirius mainframe will be taken offline on 11-July, we will upload a standard table with an Al.1 terminator image to run until that Thursday.

The CCD bakeout will likely take place the following week.

SXT SCIENCE

For Web material see...

Current Week:	http://www.solar.isas.ac.jp/sxt_co/SXTweekly.html
Current Week:	http://www.solar.isas.ac.jp/sxt_co/990708.html
Index:	http://www.solar.isas.ac.jp/sxt_co/index.html

CAMPAIGNS

For more information on campaigns, see:
http://sec.noaa.gov/solcoord/solcoord.html

For SXT plans, see:
http://isass1.solar.isas.ac.jp/sxt_co/sxt_future.html

PERSONNEL

SEMINARS

We won't be able to upload any tables until the SIRIUS mainframe is back on line. We will plan on a new table load on Thursday. No coordination with other observatories is planned for this week, and the following week we will likely do a CCD bakeout.

JST Day         UT Start Time      Pass   Table ID

Thursday	15-JUL-99 03:01    2      970715 P2 ARS1 DARK
Friday          16-JUL-99 03:15    2      970716 P2 ARS1 DIFFUSER 
Saturday        17-JUL-99 03:30    3      970717 P3 ARS1 STANDARD 

This plan is subject to change.

Continuing requests:

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).

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 Tohbans: In general flare mode supersedes table upload, i.e. 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.