15 July 1995 D. Alexander SXT CHIEF OBSERVER REPORT AND TABLE PLAN SXT TABLE PLAN FOR WEEK 29 (17-JUL-95 to 24-JUL-95) This week we will only do filament observing when conditions are suitable. Failing the existence of a good filament we will carry out standard ARS1 observing. We will continue to take offpoint terminator images. The observing objectives of this plan are: - Dark Calibration on Monday (to allow for possible filament observing). - The filament campaign with Mees Observatory. - Quiet corona observations - Take offpoint terminator images. The SXT Table Plan for the week is as follows. PLEASE REMEMBER THAT THIS IS SUBJECT TO CHANGE. Our default mode is ARS1 STD+LONG. An asterisk (*) means that this table may be replaced by a filament table.. KSC Time (start) in JST Pass # Table ID Comments _____(= UT + 9 hrs)___________________________________________________________________ Monday 17-JUL-95 11:06 3 950717 P3 ARS1 DKCAL Tuesday 18-JUL-95 11:26 3 950718 P3 ARS1 STD+LONG Wednesday 19-JUL-95 06:38 1 950718 P1 QT CORONA 19-JUL-95 13:28 5 950719 P5 ARS1 STD+LONG (*) Thursday 20-JUL-95 06:56 1 950719 P1 QT CORONA 20-JUL-95 13:48 5 950720 P5 ARS1 STD+LONG (*) Friday NO TABLE UPLOAD Saturday NO TABLE UPLOAD ********************** KSC HOLIDAY *************************** Terminator-Offpointing: The terminator-offpointing program will continue this week. The SSOC tohbans are required to manually insert the off-point OGs for the terminators in the OP tables. The SSOC tohbans, 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 be used. Dumping Patrol images: We request that KSC tobans continue to dump a patrol image each time an SXT table is loaded to facilitate the study of optimizing ARS parameters for an awfully quiet period. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ SXT CHIEF OBSERVER'S REPORT for Week 28: 10-JUL-95 to 16-JUL-95 Sun remains quiet again this week. Operations were at a minimum since the Hawaii filament campaign was on hold due to a problem with the Mees CCD and the lack of 5 complete passes for the quiet corona observations. SOLAR ACTIVITY There is not much to report in terms of activity at the moment. There were a couple of interesting active regions showing some nice large loops and a large streamer off the SE limb. This was particularly good to see since it appeared almost exactly one rotation prior to the planned Spartan flight (see below). SXT INSTRUMENT STATUS The SXT has been operating without major problem. There was a single bitmap error this week. FILAMENT OBSERVATIONS This ongoing campaign was temporarily on hold this week since filament activity was not too exciting and also due to a hardware problem at Mees. UPCOMING CAMPAIGN Spartan 201-03 is scheduled for launch on 3 August, followed by deployment 24.5 hours later. It will observe solar corona for 43.5 hours. I reminded the UV team of the availability of SXT daily images at CRL, but we will be contacted for more coordination. Observations of the Sun one rotation before the Spartan flight show a large streamer off the SE limb which should provide an excellent target for Spartan. Current plans for SXT are to offpoint to target this region and to minimise pinhole straylight effects. AR7887 was close to the west limb on July 10 and showed some large loop structures. This may prove to be a viable target for Spartan one rotation from now but is unlikely. We will monitor the activity nearer launch and report to the Spartan observers. We will not do anything special for the Northern Coronal Hole observations. We will create a new OG for the planned offpoint in the next week and use this for the offpoint terminators.