Table information for 'uset_sunspot_group.epn_core'

General

This table is available for ADQL queries and through the TAP endpoint.

Resource Description: *** USET Groups *** Values in the USET sunspot group catalog are derived from the solar drawings obtained by the Uccle Solar Equatorial Table (USET) facility that is located at the Royal Observatory of Belgium. The USET sunspot group catalog covers 82 years of observations in 2021, and is updated every day. A home-made software (DigiSun) written in Python is used to derive quantities such as location and areas from the sunspot drawings.

For a list of all services and tables belonging to this table's resource, see Information on resource 'USET Groups'

Citing this table

To cite the table as such, we suggest the following BibTeX entry:

@MISC{vo:uset_sunspot_gro,
  year=2016,
  title={{USET} Groups},
  author={Freek Verstringe},
  url={http://vo-tap.oma.be/tableinfo/uset_sunspot_group.epn_core},
  howpublished={{VO} resource provided by the {KSB}-{ROB}}
}

Columns

Sorted by DB column index. [Sort alphabetically]

NameTable Head DescriptionUnitUCD
granule_uid Granule_uid Internal table row index, which must be unique within the table. Can be alphanumeric. N/A meta.id
granule_gid Granule_gid Common to granules of same type (e.g. same map projection, or geometry data products). Can be alphanumeric. N/A meta.id
obs_id Obs_id Associates granules derived from the same data (e.g. various representations/processing levels). Can be alphanumeric, may be the ID of original observation. N/A meta.id;obs
dataproduct_type Dataproduct_type The high-level organization of the data product, from a controlled vocabulary (e.g., 'im' for image, sp for spectrum). Multiple terms may be used, separated by # characters. [Note et_prod] N/A meta.code.class
target_name Target_name Standard IAU name of target (from a list related to target class), case sensitive N/A meta.id;src
target_class Target_class Type of target, from a controlled vocabulary. N/A src.class
time_min Time_min Acquisition start time (in JD), as UTC at time_refposition d time.start;obs
time_max Time_max Acquisition stop time (in JD), as UTC at time_refposition d time.end;obs
time_sampling_step_min Time_sampling_step_min Sampling time for measurements of dynamical phenomena, lower limit. s time.resolution;stat.min
time_sampling_step_max Time_sampling_step_max Sampling time for measurements of dynamical phenomena, upper limit s time.resolution;stat.max
time_exp_min Time_exp_min Integration time of the measurement, lower limit. s time.duration;obs.exposure;stat.min
time_exp_max Time_exp_max Integration time of the measurement, upper limit s time.duration;obs.exposure;stat.max
spectral_range_min Spectral_range_min Spectral range (frequency), lower limit. Hz em.freq;stat.min
spectral_range_max Spectral_range_max Spectral range (frequency), upper limit Hz em.freq;stat.max
spectral_sampling_step_min Spectral_sampling_step_min Spectral sampling step, lower limit. Hz em.freq;spect.binSize;stat.min
spectral_sampling_step_max Spectral_sampling_step_max Spectral sampling step, upper limit Hz em.freq;spect.binSize;stat.max
spectral_resolution_min Spectral_resolution_min Spectral resolution, lower limit. N/A spect.resolution;stat.min
spectral_resolution_max Spectral_resolution_max Spectral resolution, upper limit N/A spect.resolution;stat.max
c1min C1min (This data collection does not give coordinates) N/A N/A
c1max C1max (This data collection does not give coordinates) N/A N/A
c2min C2min (This data collection does not give coordinates) N/A N/A
c2max C2max (This data collection does not give coordinates) N/A N/A
c3min C3min (This data collection does not give coordinates) N/A N/A
c3max C3max (This data collection does not give coordinates) N/A N/A
s_region S_region ObsCore-like footprint, valid for celestial, spherical, or body-fixed frames N/A pos.outline;obs.field
c1_resol_min C1_resol_min (This data collection does not give coordinates) N/A N/A
c1_resol_max C1_resol_max (This data collection does not give coordinates) N/A N/A
c2_resol_min C2_resol_min (This data collection does not give coordinates) N/A N/A
c2_resol_max C2_resol_max (This data collection does not give coordinates) N/A N/A
c3_resol_min C3_resol_min (This data collection does not give coordinates) N/A N/A
c3_resol_max C3_resol_max (This data collection does not give coordinates) N/A N/A
spatial_frame_type Spatial_frame_type Flavor of coordinate system, defines the nature of coordinates. From a controlled vocabulary, where 'none' means undefined. N/A meta.code.class;pos.frame
incidence_min Incidence_min Incidence angle (solar zenithal angle) during data acquisition, lower limit. deg pos.incidenceAng;stat.min
incidence_max Incidence_max Incidence angle (solar zenithal angle) during data acquisition, upper limit deg pos.incidenceAng;stat.max
emergence_min Emergence_min Emergence angle during data acquisition, lower limit. deg pos.emergenceAng;stat.min
emergence_max Emergence_max Emergence angle during data acquisition, upper limit deg pos.emergenceAng;stat.max
phase_min Phase_min Phase angle during data acquisition, lower limit. deg pos.phaseAng;stat.min
phase_max Phase_max Phase angle during data acquisition, upper limit deg pos.phaseAng;stat.max
instrument_host_name Instrument_host_name Standard name of the observatory or spacecraft N/A meta.id;instr.obsty
instrument_name Instrument_name Standard name of instrument N/A meta.id;instr
measurement_type Measurement_type UCD(s) defining the data, with multiple entries separated by hash (#) characters. N/A meta.ucd
processing_level Processing_level Dataset-related encoding, or simplified CODMAC calibration level [Note et_cal] N/A meta.calibLevel
creation_date Creation_date Date of first entry of this granule N/A time.creation
modification_date Modification_date Date of last modification (used to handle mirroring) N/A time.processing
release_date Release_date Start of public access period N/A time.release
service_title Service_title Title of resource (an acronym really, will be used to handle multiservice results) N/A meta.title
access_url Access_url URL of the data file, case sensitive. If present, then access_format and access_estsize are mandatory. N/A meta.ref.url;meta.file
access_format Access_format File format type (RFC 6838 Media Type a.k.a. MIME type) N/A meta.code.mime
access_estsize Access_estsize Estimated file size in kbyte. kbyte phys.size;meta.file
operator Operator The last person that analyzed the drawing N/A meta.code
wolf_number Wolf_number The Wolf number N/A meta.number
quality Quality Meteorological condition of observation: 0 no observation possible, 1 very cloudy, 2, partially cloudy, 3: fair conditions, 4: good conditions, 5: exceptionally good conditions. N/A meta.code.qual
feat_hg_lat Feat_hg_lat Heliographic latitude of center of group N/A pos.wcs;pos.barycenter
feat_hg_lon Feat_hg_lon Heliographic longitude of center of group N/A pos.wcs;pos.barycenter
feat_pixel_x Feat_pixel_x X-image coordinate of center of group in pixel N/A pos.wcs;pos.barycenter;pos.cartesian.x
feat_pixel_y Feat_pixel_y Y-image coordinate of center of group in pixel N/A pos.wcs;pos.barycenter;pos.cartesian.y
angular_dist_merid Angular_dist_merid Angular distance in longitude from the central meridian in degree N/A meta.number
angular_dist_center Angular_dist_center angular distance from the center in degree N/A meta.number
quadrant Quadrant Quadrant of group in solar disc 1=NE, 2:SE, 3=SW, 4=NW N/A meta.number
mcintosh_cls Mcintosh_cls McIntosh class N/A meta.code.class
zurich_cls Zurich_cls Zurich class N/A meta.code.class
num_spots Num_spots number of spots N/A meta.number
dipole1_hg_lat Dipole1_hg_lat Heliographic latitude of the first part of the dipole deg pos.wcs
dipole1_hg_lon Dipole1_hg_lon Heliographic longitude of the first part of the dipole deg pos.wcs
dipole2_hg_lat Dipole2_hg_lat Heliographic latitude of the second part of the dipole deg pos.wcs
dipole2_hg_lon Dipole2_hg_lon Heliographic longitude of the second part of the dipole deg pos.wcs
dipole1_pixel_x Dipole1_pixel_x X-image coordinate of first part of the dipole in pixel N/A pos.wcs
dipole1_pixel_y Dipole1_pixel_y Y-image coordinate of first part of the dipole in pixel N/A pos.wcs
dipole2_pixel_x Dipole2_pixel_x X-image coordinate of second part of the dipole in pixel N/A pos.wcs
dipole2_pixel_y Dipole2_pixel_y Y-image coordinate of second part of the dipole in pixel N/A pos.wcs
spot_area_deproj_msh Spot_area_deproj_msh Group deprojected area in millionths of solar hemisphere N/A phys.area
spot_area_raw_px Spot_area_raw_px Group area in number of pixels N/A phys.area
spot_area_proj_msh Spot_area_proj_msh Group projected area in millionths of solar hemisphere N/A phys.area
gspot Gspot Relative importance of the leading spot and density of the sunspot population (USSPS codes) N/A obs.param
largest_spot Largest_spot Name of the largest spot (varchar(1)): L (leading), T (trailing), or E (equal) N/A meta.code.class

Columns that are parts of indices are marked like this.

Other

The following services may use the data contained in this table:

VOResource

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Notes

Copyright and such: This research has been made at the Royal Observatory of Belgium