LOFAR EN1-HD metadata schema
Created: 13 May 2026
Metadata fields
This schema has 22 metadata fields.
| Unique name | Label / Description | Type | Use |
|---|---|---|---|
| accref |
Access key
Access key for the data |
xs:normalizedString | Optional |
| centeralpha |
Image center right ascension
Right ascension from center of image in degrees |
xs:decimal | Optional |
| centerdelta |
Image center declination
Declination from center of image in degrees |
xs:decimal | Optional |
| instid |
Instrument identifier
Identifier of the originating instrument |
xs:normalizedString | Optional |
| imsize |
Image size
Image size in degrees |
xs:decimal multivalue | Optional |
| pixunits |
Pixel units
The pixel units |
xs:normalizedString | Optional |
| refframe |
Reference frame
Coordinate system reference frame |
xs:normalizedString | Optional |
| wcs_equinox |
Equinox
Equinox of the given coordinates |
xs:decimal | Optional |
| wcs_projection |
Projection type
FITS WCS projection type |
xs:normalizedString | Optional |
| bandpassid |
Bandpass name
Name of the bandpass used |
xs:normalizedString | Optional |
| bandpassunit |
Bandpass unit
Unit of bandpass specifications |
xs:normalizedString | Optional |
| bandpassrefval |
Bandpass quantity
Characteristic quantity for the bandpass of the image |
xs:decimal | Optional |
| bandpasshi |
Bandpass upper limit
Upper limit of the bandpass in bandpass units |
xs:decimal | Optional |
| bandpasslo |
Bandpass lower limit
Lower limit of the bandpass in bandpass units |
xs:decimal | Optional |
| poly_ra |
Polygon right ascension
Right ascension coordinates from the associated facet polygon in degrees |
xs:decimal multivalue | Optional |
| poly_dec |
Polygon declination
Declination coordinates from the associated facet polygon in degrees |
xs:decimal multivalue | Optional |
| facet_id |
Facet identifier
Corresponding facet identifier |
xs:integer | Optional |
| datefirstobs |
First epoch
Date of first observation |
xs:normalizedString | Optional |
| datelastobs |
Last epoch
Date of last observation |
xs:normalizedString | Optional |
| sasids |
SAS IDs
SAS IDs from all observations |
xs:normalizedString | Optional |
| pipeline |
Pipeline software
Pipeline GitHub URL |
xs:normalizedString | Optional |
| pipeline_version |
Pipeline version
Pipeline software version |
xs:normalizedString | Optional |