<?xml version='1.0'?><?xml-stylesheet href='/static/xsl/oai.xsl' type='text/xsl'?><ri:Resource created="2011-03-25T10:23:00Z" status="active" updated="2026-04-13T12:30:40Z" version="1.2" xmlns:g-colstat="http://dc.g-vo.org/ColStats-1" xmlns:ri="http://www.ivoa.net/xml/RegistryInterface/v1.0" xmlns:vr="http://www.ivoa.net/xml/VOResource/v1.0" xmlns:vs="http://www.ivoa.net/xml/VODataService/v1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://dc.g-vo.org/ColStats-1 http://vo.ari.uni-heidelberg.de/docs/schemata/Colstats.xsd http://www.ivoa.net/xml/RegistryInterface/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/RegistryInterface.xsd http://www.ivoa.net/xml/VOResource/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/VOResource.xsd http://www.ivoa.net/xml/VODataService/v1.1 http://vo.ari.uni-heidelberg.de/docs/schemata/VODataService.xsd" xsi:type="vs:CatalogResource"><shortName>ivoa.emptyobscor</shortName><identifier>ivo://padc.obspm.sandbox/__system__/obscore/emptyobscore</identifier><curation><publisher>Paris Astronomical Data Centre</publisher><creator><name>PADC</name><logo>http://voparis-srv-paris.obspm.fr/logos/PADC_small.png</logo></creator><date role="Updated">2025-07-29T11:57:03Z</date><contact><name>PADC support team</name><address>77 av. Denfert Rochereau, 75014 Paris, FRANCE</address><email>vo.paris@obspm.fr</email><telephone>0033140512082</telephone></contact></curation><content><subject>observational-astronomy</subject><description>An empty table having all columns of the obscore table. Useful
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internally, and sometimes for tricky queries.</description><column><name>dataproduct_type</name><description>High level scientific classification of the data product, taken from an enumeration</description><ucd>meta.code.class</ucd><utype>obscore:obsdataset.dataproducttype</utype><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>dataproduct_subtype</name><description>Data product specific type</description><ucd>meta.code.class</ucd><utype>obscore:obsdataset.dataproductsubtype</utype><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>calib_level</name><description>Amount of data processing that has been applied to the data</description><ucd>meta.code;obs.calib</ucd><utype>obscore:obsdataset.caliblevel</utype><dataType xsi:type="vs:VOTableType">short</dataType></column><column><name>obs_collection</name><description>Name of a data collection (e.g., project name) this data belongs to</description><ucd>meta.id</ucd><utype>obscore:dataid.collection</utype><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>obs_id</name><description>Unique identifier for an observation</description><ucd>meta.id</ucd><utype>obscore:DataID.observationID</utype><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>obs_title</name><description>Free-from title of the data set</description><ucd>meta.title;obs</ucd><utype>obscore:dataid.title</utype><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>obs_publisher_did</name><description>Dataset identifier assigned by the publisher.</description><ucd>meta.ref.ivoid</ucd><utype>obscore:curation.publisherdid</utype><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>indexed</flag><flag>nullable</flag></column><column><name>obs_creator_did</name><description>Dataset identifier assigned by the creator.</description><ucd>meta.id</ucd><utype>obscore:dataid.creatordid</utype><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>access_url</name><description>The URL at which to obtain the data set.</description><ucd>meta.ref.url</ucd><utype>obscore:access.reference</utype><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>access_format</name><description>MIME type of the resource at access_url</description><ucd>meta.code.mime</ucd><utype>obscore:access.format</utype><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>access_estsize</name><description>Estimated size of data product</description><unit>kbyte</unit><ucd>phys.size;meta.file</ucd><utype>obscore:access.size</utype><dataType xsi:type="vs:VOTableType">long</dataType><flag>nullable</flag></column><column><name>target_name</name><description>Object a targeted observation targeted</description><ucd>meta.id;src</ucd><utype>obscore:Target.Name</utype><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>target_class</name><description>Class of the target object (star, QSO, ...)</description><ucd>src.class</ucd><utype>obscore:target.class</utype><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>s_ra</name><description>RA of (center of) observation, ICRS</description><unit>deg</unit><ucd>pos.eq.ra</ucd><utype>obscore:char.spatialaxis.coverage.location.coord.position2d.value2.c1</utype><dataType xsi:type="vs:VOTableType">double</dataType><flag>indexed</flag><flag>nullable</flag></column><column><name>s_dec</name><description>Dec of (center of) observation, ICRS</description><unit>deg</unit><ucd>pos.eq.dec</ucd><utype>obscore:char.spatialaxis.coverage.location.coord.position2d.value2.c2</utype><dataType xsi:type="vs:VOTableType">double</dataType><flag>indexed</flag><flag>nullable</flag></column><column><name>s_fov</name><description>Approximate spatial extent for the region covered by the observation</description><unit>deg</unit><ucd>phys.angSize;instr.fov</ucd><utype>obscore:char.spatialaxis.coverage.bounds.extent.diameter</utype><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>s_region</name><description>Region covered by the observation, as a polygon</description><ucd>pos.outline;obs.field</ucd><utype>obscore:char.spatialaxis.coverage.support.area</utype><dataType arraysize="*" extendedType="adql:REGION" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>s_resolution</name><description>Best spatial resolution within the data set</description><unit>arcsec</unit><ucd>pos.angResolution</ucd><utype>obscore:Char.SpatialAxis.Resolution.refval.value</utype><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>t_min</name><description>Lower bound of times represented in the data set</description><unit>d</unit><ucd>time.start;obs.exposure</ucd><utype>obscore:char.timeaxis.coverage.bounds.limits.starttime</utype><dataType xsi:type="vs:VOTableType">double</dataType><flag>nullable</flag></column><column><name>t_max</name><description>Upper bound of times represented in the data set</description><unit>d</unit><ucd>time.end;obs.exposure</ucd><utype>obscore:char.timeaxis.coverage.bounds.limits.stoptime</utype><dataType xsi:type="vs:VOTableType">double</dataType><flag>nullable</flag></column><column><name>t_exptime</name><description>Total exposure time</description><unit>s</unit><ucd>time.duration;obs.exposure</ucd><utype>obscore:char.timeaxis.coverage.support.extent</utype><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>t_resolution</name><description>Minimal significant time interval along the time axis</description><unit>s</unit><ucd>time.resolution</ucd><utype>obscore:char.timeaxis.resolution.refval.value</utype><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>em_min</name><description>Minimal wavelength represented within the data set</description><unit>m</unit><ucd>em.wl;stat.min</ucd><utype>obscore:char.spectralaxis.coverage.bounds.limits.lolimit</utype><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>em_max</name><description>Maximal wavelength represented within the data set</description><unit>m</unit><ucd>em.wl;stat.max</ucd><utype>obscore:char.spectralaxis.coverage.bounds.limits.hilimit</utype><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>em_res_power</name><description>Spectral resolving power lambda/delta lambda</description><ucd>spect.resolution</ucd><utype>obscore:char.spectralaxis.resolution.resolpower.refval</utype><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>o_ucd</name><description>UCD for the product's observable</description><ucd>meta.ucd</ucd><utype>obscore:char.observableaxis.ucd</utype><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>pol_states</name><description>List of polarization states in the data set</description><ucd>meta.code;phys.polarization</ucd><utype>obscore:Char.PolarizationAxis.stateList</utype><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>facility_name</name><description>Name of the facility at which data was taken</description><ucd>meta.id;instr.tel</ucd><utype>obscore:Provenance.ObsConfig.facility.name</utype><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>instrument_name</name><description>Name of the instrument that produced the data</description><ucd>meta.id;instr</ucd><utype>obscore:Provenance.ObsConfig.instrument.name</utype><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>s_xel1</name><description>Number of elements (typically pixels) along the first spatial axis.</description><ucd>meta.number</ucd><utype>obscore:Char.SpatialAxis.numBins1</utype><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>s_xel2</name><description>Number of elements (typically pixels) along the second spatial axis.</description><ucd>meta.number</ucd><utype>obscore:Char.SpatialAxis.numBins2</utype><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>t_xel</name><description>Number of elements (typically pixels) along the time axis.</description><ucd>meta.number</ucd><utype>obscore:Char.TimeAxis.numBins</utype><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>em_xel</name><description>Number of elements (typically pixels) along the spectral axis.</description><ucd>meta.number</ucd><utype>obscore:Char.SpectralAxis.numBins</utype><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>pol_xel</name><description>Number of elements (typically pixels) along the polarization axis.</description><ucd>meta.number</ucd><utype>obscore:Char.PolarizationAxis.numBins</utype><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>s_pixel_scale</name><description>Sampling period in world coordinate units along the spatial axis</description><unit>arcsec</unit><ucd>phys.angSize;instr.pixel</ucd><utype>obscore:Char.SpatialAxis.Sampling.RefVal.SamplingPeriod</utype><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>em_ucd</name><description>Nature of the product's spectral axis (typically, em.freq, em.wl, or em.energy)</description><ucd>meta.ucd</ucd><utype>obscore:Char.SpectralAxis.ucd</utype><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>preview</name><description>URL of a preview (low-resolution, quick-to-retrieve representation) of the data.</description><ucd>meta.ref.url;meta.preview</ucd><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>source_table</name><description>Name of a TAP-queriable table this data originates from. This source table usually provides more information on the the data than what is given in obscore. See the TAP_SCHEMA of the originating TAP server for details.</description><ucd>meta.id;meta.table</ucd><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column><column><name>filter_name</name><description>name of the filter in FITS file header</description><dataType arraysize="*" xsi:type="vs:VOTableType">char</dataType><flag>nullable</flag></column></table><table><name>ivoa.obscore</name><description>This data collection is queryable in PADC TAP Server on
voparis-tap-sandbox.obspm.fr's obscore table.</description></table></schema></tableset></ri:Resource>