Heliophysics Events Knowledgebase Coverage Registry (HCR)
Observation Details
Overview Where Groups: Mode, FOV, # spectra in map Data Links
2026-04-23 11:47:08-14:40:41
HOP 485 South 60
Observe high-latitude magnetic field evolution during the sunspot cycle
x,y:-22",-818"
Max FOV:317"x162"
Target:Quiet Sun
Nearby Events
6302A Continuum Intensity317"x162"1014 spectra
6302A Longitudinal Flux Density317"x162"1014 spectra
6302A Transverse Flux Density317"x162"1014 spectra
6302A Velocity 6301.5A317"x162"1014 spectra
Level 1 Summary
Level 2 Summary
Level 1 Monthly
Level 2 Monthly
SP Cubes 17 MB
SOTSP: HOP 485 South 60
2026-04-23T11:47:08 to 2026-04-23T14:40:41
Science Goal: Observe high-latitude magnetic field evolution during the sunspot cycle
Program: Fast deep mode, 2048 slit position, LIMB ONLY
Target: Quiet Sun
xcen=-22 ycen=-818
Instrument: SOTSP
HOP/JOP: 485
Description: Scientific Justification: SDO/HMI full-disk magnetograms suggest the appearance and advection of patches of mixed polarity, in latitudes ranging from 50 to 70 degrees in each hemisphere. These magnetic field concentrations hold important information as to polar field evolution, both in the reversal of the polar cap and in the strengthening of the new one, throughout each sunspot cycle. We propose to monitor regions that center at latitude of 60 degrees in each hemisphere, at least once per month, in a similar manner to HOP81 fast scan mode. These observations complement the existing series of high-quality magnetogram data from SOT of the polar regions under HOP 81 and HOP 206, which cover heliographic latitudes poleward of 70 degrees.

Annotations:
Hits: 2
Chief Observer
Tiwari --> Yoshida
Related Links
Cites: HOP 485 South 60     
Timeline: gif use
See also
Datasets
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wavelength: 6302A Continuum Intensity cadence: 0 min fov: 317,162 images: 1014 JavaScript Landing Page
wavelength: 6302A Velocity 6301.5A cadence: 0 min fov: 317,162 images: 1014 JavaScript Landing Page
wavelength: 6302A Transverse Flux Density cadence: 0 min fov: 317,162 images: 1014 JavaScript Landing Page
wavelength: 6302A Longitudinal Flux Density cadence: 0 min fov: 317,162 images: 1014 JavaScript Landing Page
Time Series (SP Datacubes)
VOEvent XML Planning Event