Planning week 23-30 August 2025This is a standard planning week, with three OPs. Although the optical eclipse season had finished, the X-ray/EUV eclipse season continued. Going into the week the Sun was fairly quiet. The default AR from the previous week was AR 14188. For OP1 the default AR was 14191, which had a medium size sunspot but was showing little activity. Over the weekend AR 14197 and AR 14199 appeared over the east limb and they were targeted in OP2. 14197 was the target for OP3. There were two HOPs this week.
Saturday 23 Aug [OP1]I ran the studies HPW021VEL260x512v2 (10:57 UT), Atlas_60 (12:42 UT) and HPW021VEL001x512v2 (14:20 UT) on AR 14191. The latter study is a sit-and-stare. Sunday 24 Aug [OP1]HOP 206 was supported with a single run of HOP81_new_study at 11:33 UT. The target was the north coronal hole. Monday 25 Aug [OP1]I took advantage of HOP 349 to perform the quiet Sun spectral atlas using dhb_atlas_120m_30" at 04:02 UT. The target was north of disk center. Note that the satellite pointing is fixed. I repeated the AR sequence from Saturday on AR 14191. I ran the studies HPW021VEL260x512v2 (12:05 UT), Atlas_60 (13:50 UT) and HPW021VEL001x512v2 (15:28 UT). I scheduled Atlas_180 on the AR 14191 sunspot at 23:30 UT. The aim was to have long exposures for the O IV 272 lines. I asked the IRIS planner (Souvik Bose) to schedule an IRIS observation of the O IV lines at this time. UPDATE: this worked well, and the sunspot is nicely centered in the EIS raster. Tuesday 26 Aug [OP2]Two ARs had rotated over the limb during the last OP, and both are producing M flares. For this OP we went for AR 14197 for the first day and AR 14199 for the second. The HPW021/Atlas/HPW021 sequence (see 23 and 25 August) was run on AR 14197, beginning at 22:32 UT. Wednesday 27 Aug [OP2]HOP 206 was supported with HOP81_new_study at 11:30 UT. I scheduled 6 repeats of Flare_SNS_v2 from 18:29 UT on AR 14199. I off-pointed the slit slightly in the hopes of catching an eruption. Thursday 28 Aug [OP3]HPW021VEL260x512v2 was run on some transequatorial loops on the west side of AR 14197 at 15:32 UT. UPDATE: the pointing was pretty good, and captured the loops that I was interested in. The study pry_flare_2 was run on the core of AR 14197, beginning at 18:48 UT. 295 repeats were used. UPDATE: this caught some flaring activity, with Fe XXIV emission seen from diagonal loop structures. Fe XXIV does not become very strong (no saturation). Friday 29 Aug [OP3]I took advantage of HOP 349 to run HPW021VEL260x512v2 on the transequatorial loops again at 04:22 UT. Note that the satellite pointing is fixed. I ran the studies HPW021VEL260x512v2 (11:00 UT), Atlas_60 (12:45 UT) and HPW021VEL001x512v2 (14:23 UT) on AR 14197. The latter study is a sit-and-stare. Saturday 30 Aug [OP3]HOP 393 was supported at 00:05 UT with Large_CH_Map. Page maintained by Dr Peter R Young. |
