LoTSS-DR1 Cutoutivo://astron.nl/hetdex/lotss-dr1-img/cutoutASTRONShimwell, T.2022-08-11T12:34:10Michael Sipior

Oude Hoogeveensedijk 4, 7991PD Dwingeloo, the Netherlands

vo@astron.nlCatalogs This service provides cutouts from the images of the LOFAR Two-metre Sky Survey First Data Release (LoTSS-DR1). This data release contains images and catalogs that characterise the low-frequency radio emission in the region of the HETDEX Spring Field (right ascension 10h45m00s to15h30m00s and declination 45◦00′00′′ to 57◦00′00′′). A total of 325,694 radio sources are detected in a region covering 424 square degrees. The maps have a median sensitivity of 71 uJy/beam and a resolution of 6 arcsec. Optical counterparts for 71% of the radio sources have been identified and where possible photometric redshifts for these sources have been derived.https://vo.astron.nl/hetdex/lotss-dr1-img/cutout/infoserved-byThe VO @ ASTRON TAP servicehttps://vo.astron.nl/hetdex/lotss-dr1-img/cutout/siap.xml?GETapplication/x-votable+xmlPOSICRS Position, RA,DEC decimal degrees (e.g., 234.234,-32.46)degpos.eqcharSIZESize in decimal degrees (e.g., 0.2 or 1,0.1)degcharINTERSECTRelation of image and specified Region of Interest.charFORMATRequested format of the image datacharRESPONSEFORMATFile format requested for output.meta.code.mimecharMAXRECMaximum number of records returned. Pass 0 to retrieve service parameters.integerVERBExhaustiveness of column selection. VERB=1 only returns the most important columns, VERB=2 selects the columns deemed useful to the average user, VERB=3 returns a table with all available columns.integerCutout100000074.053.00.50.5https://vo.astron.nl/hetdex/lotss-dr1-img/cutout/availabilityhttps://vo.astron.nl/hetdex/lotss-dr1-img/cutout/capabilitieshttps://vo.astron.nl/hetdex/lotss-dr1-img/cutout/tableMetadatahttps://vo.astron.nl/tap6/5583,5587,5597,5608,5614,5618,5628,5907,5917,5948,5959,5963,5974,5978,5996,6037,10687,10708,10712,10724,10734,10738,10943,10963,10974,10980,10989,11003,11027,11038,11044,11053,11063,11074,11083,11090,11097,11111,11115,11139,11148,11152,11158,11170,11177,11184,11279,11294,11299,11320,11323,11362,11393,11405,11415,11419,11436,11776https://vo.astron.nl/hetdex/lotss-dr1-img/cutout/coverageRadiohetdex This service queries the catalog of images from the LOFAR Two-metre Sky Survey First Data Release (LoTSS-DR1). This data release contains images and catalogs that characterise the low-frequency radio emission in the region of the HETDEX Spring Field (right ascension 10h45m00s to15h30m00s and declination 45◦00′00′′ to 57◦00′00′′). A total of 325,694 radio sources are detected in a region covering 424 square degrees. The maps have a median sensitivity of 71 uJy/beam and a resolution of 6 arcsec. Optical counterparts for 71% of the radio sources have been identified and where possible photometric redshifts for these sources have been derived.hetdex.hetdex_images This service queries the catalog of images from the LOFAR Two-metre Sky Survey First Data Release (LoTSS-DR1). This data release contains images and catalogs that characterise the low-frequency radio emission in the region of the HETDEX Spring Field (right ascension 10h45m00s to15h30m00s and declination 45◦00′00′′ to 57◦00′00′′). A total of 325,694 radio sources are detected in a region covering 424 square degrees. The maps have a median sensitivity of 71 uJy/beam and a resolution of 6 arcsec. Optical counterparts for 71% of the radio sources have been identified and where possible photometric redshifts for these sources have been derived.accrefAccess key for the dataAccess.ReferencecharindexednullableownerOwner of the datacharnullableembargoDate the data will become/became publicacharnullablemimeMIME type of the file servedmeta.code.mimeAccess.FormatcharnullableaccsizeSize of the data in bytesbyteVOX:Image_FileSizeAccess.SizelongnullablecenteralphaApproximate center of image, RAdegPOS_EQ_RA_MAINdoublenullablecenterdeltaApproximate center of image, DecdegPOS_EQ_DEC_MAINdoublenullableimagetitleSynthetic name of the imageVOX:Image_TitlecharnullableinstidIdentifier of the originating instrumentINST_IDcharnullabledateobsEpoch at midpoint of observationdVOX:Image_MJDateObsdoublenullablenaxesNumber of axes in dataVOX:Image_NaxesintnullablepixelsizeNumber of pixels along each of the axespixVOX:Image_NaxisintnullablepixelscaleThe pixel scale on each image axisdeg/pixVOX:Image_ScalefloatnullablerefframeCoordinate system reference frameVOX:STC_CoordRefFramecharnullablewcs_equinoxEquinox of the given coordinatesyrVOX:STC_CoordEquinoxfloatnullablewcs_projectionFITS WCS projection typeVOX:WCS_CoordProjectioncharnullablewcs_refpixelWCS reference pixelpixVOX:WCS_CoordRefPixelfloatnullablewcs_refvaluesWorld coordinates at WCS reference pixeldegVOX:WCS_CoordRefValuedoublenullablewcs_cdmatrixFITS WCS CDij matrixdeg/pixVOX:WCS_CDMatrixfloatnullablebandpassidFreeform name of the bandpass usedVOX:BandPass_IDcharnullablebandpassunitUnit of bandpass specifications (always m).VOX:BandPass_UnitcharnullablebandpassrefvalCharacteristic quantity for the bandpass of the imagemVOX:BandPass_RefValuefloatnullablebandpasshiUpper limit of the bandpass (in BandPass_Unit units)mVOX:BandPass_HiLimitfloatnullablebandpassloLower limit of the bandpass (in BandPass_Unit units)mVOX:BandPass_LoLimitfloatnullablepixflagsFlags specifying the processing done (C-original; F-resampled; Z-fluxes valid; X-not resampled; V-for display onlyVOX:Image_PixFlagscharnullablecoverageField covered by the imagedegdoubleindexednullableivoaDefinition and support code for the ObsCore data model and table.ivoa.obscoreThis data collection is queriable in The VO @ ASTRON's obscore table.