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This objective is covered by the SOOP R_SMALL_HRES_HCAD_Atmospheric_Dynamics_Structure run for different targets at the quiet Sun (observed from the perihelion) and the coronal holes (observed from high-latitude windows). The SOOP L_SMALL_HRES_HCAD_Slow-Wind-Connection will also provide valuable information on photospheric structures but at lower spatial resolution.

Relevant SOOPs: 



  • SPICE (updated by Alessandra Giunta 01/12/2015)
    • Target: Quiet Sun or coronal holes; on disk
    • Observing mode: Dynamics/Waves
    • Slit: 2” for Dynamics; 4” for Waves
    • Exposure time/cadence and number of X positions: 10 s, X=224 for Dynamics, 5s, X=720 for Waves
    • Field of View: 7’×11’ for Dynamics, 4” ×11’ (sit and stare) for Waves
    • Number of repetitions of the study: 3 for Dynamics; 2 for Waves
    • Observation time: 1.9 hours (0.6 hours per study) for Dynamics; 2 hours (1 hours per study) for Waves – repeat the full 4 hours (Dynamics+ waves) if needed
    • Key SPICE lines to be included: H I 1025 Å, C II 1036 Å, C III 977 Å, O VI 1032 Å, Ne VIII 770 Å, Mg IX 706 Å, Si XII 520 Å (x2) – 10 lines (4 profiles and 6 intensities)
    • Observing window preference: Perihelion preferred for quiet Sun; high-latitude for coronal holes.
    • Other instruments:  PHI for magnetic fields; EUI for context imaging.
    • Comments: 

      - The choice of lines, and also the number of intensities and profiles, is flexible, although the sum of the intensities and profiles is constrained to a maximum (e.g 15 for composition mapping). While varying the number of intensities and profiles, within the maximum, has no effect on the duration of the study, it will have an effect on the telemetry.

      - Possible binning on Y direction (group of 2 pixels).

      - Repeat for 2 days (requested by PHI).

      - SPICE will observe a sub-field of PHI field-of-view at high cadence and spatial resolution.  The rasters could be mixed with sit-and-stare studies for high-cadence (wave) studies.  For example, alternate each for 3-hour periods.