Table information for 'nda.epn_core'

General

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

Resource Description: Decametric radio observation from Nancay decameter array. The Nancay Decameter Array (NDA) at the Station de Radioastronomie de Nancay (SRN) is a phased array of 144 "Teepee" helicoidal antenna, half of which being Right Handed (RH) polarized and the other half being Left Handed (LH) polarized. Four receivers are currently connected to the NDA, sampling data in spectral ranges within 5 to 80 MHz.

For a list of all services and tables belonging to this table's resource, see Information on resource 'Nancay Decameter Array observation database'

Resource Reference URL: http://www.obs-nancay.fr/-Le-reseau-decametrique-.html?lang=en

Citing this table

This table has an associated publication. If you use data from it, it may be appropriate to reference 2000GMS...119..321L (ADS BibTeX entry for the publication) either in addition to or instead of the service reference.

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

@MISC{vo:nda_epn_core,
  year=2016,
  title={Nancay Decameter Array observation database},
  author={Station de Radioastronmie de Nancay},
  url={http://vogate.obs-nancay.fr/tableinfo/nda.epn_core},
  howpublished={{VO} resource provided by the VO nancay datacenter}
}

Fields

Sorted by DB column index. [Sort alphabetically]

NameTable Head DescriptionUnitUCD
granule_uid Granule_uid Internal table row index Unique ID in data service, also in v2. 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
dataproduct_type Dataproduct_type The high-level organization of the data product, from enumerated list (e.g., 'im' for image, sp for spectrum) [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 enumerated list N/A meta.code.class;src
time_min Time_min Acquisition start time (in JD) d time.start
time_max Time_max Acquisition stop time (in JD) d time.end
time_sampling_step_min Time_sampling_step_min Sampling time for measurements of dynamical phenomena, lower limit. s time.interval;stat.min
time_sampling_step_max Time_sampling_step_max Sampling time for measurements of dynamical phenomena, upper limit s time.interval;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.step;stat.min
spectral_sampling_step_max Spectral_sampling_step_max spectral sampling step, upper limit Hz em.freq.step;stat.max
spectral_resolution_min Spectral_resolution_min Sectral resolution, lower limit. Hz spect.resolution;stat.min
spectral_resolution_max Spectral_resolution_max Sectral resolution, upper limit Hz spect.resolution;stat.max
c1min C1min Longitude on body, lower limit. deg pos.bodyrc.long;stat.min
c1max C1max Longitude on body, upper limit deg pos.bodyrc.long;stat.max
c2min C2min Latitude on body, lower limit. deg pos.bodyrc.lat;stat.min
c2max C2max Latitude on body, upper limit deg pos.bodyrc.lat;stat.max
c3min C3min Height over defined null, lower limit. m pos.bodyrc.alt;stat.min
c3max C3max Height over defined null, upper limit m pos.bodyrc.alt;stat.max
s_region S_region ObsCore-like footprint, valid for celestial, spherical, or body-fixed frames. N/A phys.outline;obs.field
c1_resol_min C1_resol_min Resolution in the first coordinate, lower limit. deg pos.resolution;stat.min
c1_resol_max C1_resol_max Resolution in the first coordinate, upper limit deg pos.resolution;stat.max
c2_resol_min C2_resol_min Resolution in the second coordinate, lower limit. deg pos.resolution;stat.min
c2_resol_max C2_resol_max Resolution in the second coordinate, upper limit deg pos.resolution;stat.max
c3_resol_min C3_resol_min Resolution in the third coordinate, lower limit. m pos.resolution;stat.min
c3_resol_max C3_resol_max Resolution in the third coordinate, upper limit m pos.resolution;stat.max
spatial_frame_type Spatial_frame_type Flavor of coordinate system, defines the nature of coordinates. From enumerated list N/A meta.code.class;pos.frame
incidence_min Incidence_min Incidence angle (solar zenithal angle) during data acquisition, lower limit. deg pos.posAng;stat.min
incidence_max Incidence_max Incidence angle (solar zenithal angle) during data acquisition, upper limit deg pos.posAng;stat.max
emergence_min Emergence_min Emergence angle during data acquisition, lower limit. deg pos.posAng;stat.min
emergence_max Emergence_max Emergence angle during data acquisition, upper limit deg pos.posAng;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 CODMAC calibration level; see the et_cal note http://dc.g-vo.org/tableinfo/titan.epn_core#note-et_cal for what values are defined here. [Note et_cal] N/A meta.code;obs.calib
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.update
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. Can point to a script. 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
time_scale Time_scale Always UTC in data services (may be relaxed in computational services such as ephemeris) - from enumerated list N/A time.scale
access_md5 Access_md5 MD5 Hash for the file N/A meta.checksum;meta.file
thumbnail_url Thumbnail_url URL of a thumbnail image with predefined size (png ~200 pix, for use in a client only). N/A meta.ref.url;meta.file
species Species Identifies a chemical species, case sensitive N/A meta.id;phys.atmol
publisher Publisher A short string identifying the entity running the data service used. N/A meta.ref
bib_reference Bib_reference Bibcode preferred if available (does that include link?), doi, or other biblio id, URL N/A meta.bib
target_region Target_region Type of region of interest N/A meta.id;class
feature_name Feature_name Secondary name (can be standard name of region of interest). N/A meta.id;pos
receiver_name Receiver_name Receiver name used with the instrument. N/A meta.id
accref Accref File path from local directory. N/A meta.ref;meta.file

Columns that are parts of indices are marked like this.

Other

VOResource

VO nerds may sometimes need VOResource XML for this table.

Notes

Copyright and such: A. Lecacheux, The Nancay Decameter Array: A Useful Step Towards Giant, New Generation Radio Telescopes for Long Wavelength Radio Astronomy, in Radio Astronomy at Long Wavelengths, eds. R. G. Stone, K. W. Weiler, M. L. Goldstein, and J.-L. Bougeret, AGU Geophys. Monogr. Ser., 119, 321, 2000.