Planning week 8 - 15 Sep 2018


The week began with a very quiet Sun. An old decaying active region had just passed disk center. Although a small region emerged on 8-Sep (AR 12721) it was too late for OP1, and we decided to ignore it for OP2. We ended up spending most of OP2 on the north coronal hole. Another small AR (12722) emerged on 10-Sep and this became the default pointing for OP3.

Interesting studies (for me) were:

  • Loop footpoint study on 8 & 9-Sep.
  • Two long sequences of coronal hole observations on 11 & 12-Sep (28 hours in all!).
  • A drifting sit-and-stare observation in the north coronal hole on 14-Sep.


Saturday 8 September (OP1)

AIA 193 image

HOP 81 was supported with a single large raster at 11:27 UT. The coronal hole was clearly seen, so should be a good data-set.

The old decaying AR had a few "tufts" in 171, so I chose one of these for a footpoint study with Cool_loop_resp_v2 beginning at 19:45 (2 rasters). SP should be observing this footpoint. IRIS is taking large format (320x320) rasters, so should also cover footpoint. [UPDATE: the 171 footpoint is nicely centered in the rasters and is quite compact.]

Sunday 9 September (OP1)

AIA 193 image

A quiet Sun spectral atlas was scheduled 03:08 UT at disk center (no tracking).

The footpoint study continued at 06:46 UT (44 rasters), and again at 18:32 UT (11 rasters).

Monday 10 September (OP1)

AIA 193 image

HOP 336 (cycle 25 bright points) was supported at 10:12 UT (north) and 13:42 UT (south) with Large_CH_Map.

Tuesday 11 September (OP2)

AIA 193 image

HOP 206 (north coronal hole) was supported with a single large raster at 10:41 UT.

I scheduled Cool_loop_resp_v2 at 17:50 for 19 hours (!), corresponding to 75 repeats. I chose a pointing in the north coronal hole that was dark but partly contained a plume. Note that the CP did not implement the spacecraft-SOT offset, so the SP scans will be offset from EIS by (+20,+34).

Wednesday 12 September (OP2)

AIA 193 image

I continued the coronal hole monitoring with Cool_loop_resp_v2 from 17:52 UT, with another 32 rasters.

Thursday 13 September (OP2)

The coronal hole sequence continued till 03:00 UT.

Thursday 13 September (OP3)

AIA 193 image

I scheduled 7 runs of HPW021_VEL_260x512v2 on AR 12722 in this OP, the first at 10:16 UT.

HOP 79 was supported from 11:16 UT onwards, although I only did 5 of the 20 pointings. (These pointings still cover the whole of the solar diameter.)

I took advantage of one of the empty HOP 79 pointings to schedule Atlas_60 on AR 12722 at 16:09 UT.

Friday 14 September (OP3)

AIA 193 image

The next 4 runs of HPW021 on AR 12722 were scheduled at 00:52, 04:40, 10:50 and 16:22 UT.

HOP 206 was supported at the north pole with a single large raster at 18:13 UT. I took advantage of some spare time at this location to schedule two repeats of Cool_loop_stare at about 23:00 UT. Note that a fixed satellite pointing was used so the target will drift with time.

Saturday 15 September (OP3)

AIA 193 image

The two final runs of HPW021 on AR 12722 were scheduled on 01:46 and 06:37 UT.


Page maintained by Dr Peter R Young.