Pointingsivo://astron.nl/lotss_dr3/q/query_pointingsASTRONShimwell, T. W.Hardcastle, M. J.Tasse, C.Drabent, A.Botteon, A.Williams, W. L.Best, P.N.Röttgering, H. J. A.Brüggen, M.Brunetti, G.Callingham, J. R.Chyży, K. T.Conway, J. E.De Gasperin, F.Haverkorn, M.Horellou, C.Jackson, N.Miley, G. K.Morabito, L. K.Morganti, R.O'Sullivan, S. P.Schwarz, D. J.Smith, D. J. B.van Weeren, R. J.Vedantham, H. K.White, G. J.Ahmadi, A.Alegre, L.Arias, M.Asabere, B.Bahr-Kalus, B.Barkus, B.Bilicki, M.Böhme, L.Brentjens, M.Brienza, M.Bomans, D. J.Bonafede, A.Bonato, M.Bonnassieux, E.Boxelaar, J. M.Camera, S.Cassano, R.Chilufya, J.Cianfaglione, M.Croston, J. H.Cuciti, V.Dabhade, P.De Rubeis, E.de Jong, J. M. G. H. J.Dallacasa, D.Dettmar, R. J.Duncan, K. J.Di Gennaro, G.Edler, H. W.Groeneveld, C.Gürkan, G.Hajduk, M.Hale, C. L.Heesen, V.Hoang, D. N.Hoeft, M.Holties, H.Horton, M. A.Iacobelli, M.Jamrozy, M.Jarvis, M. J.Jelic, V.Kadler, M.Kondapally, R.Kunert-Bajraszewska, M.Loose, M.Magliocchetti, M.Małek, K.Manzano, C.McKean, J. P.Mevius, M.Mingo, B.Miskolczi, A.Misra, A.Moldón, J.Nair, D.G.Nakoneczny, S. J.Orru, E.Pashapour-Ahmadabadi, M.Pasini, T.Petley, J.Pierce, J. C. S.Prandoni, I.Rafferty, D.Rajpurohit, K.Riseley, C.J.Roberts, I. D.Sethi, S.Shulevski, A.Stein, M.Stuardi, C.Sweijen, F.ter Veen, S.Timmerman, R.Vaccari, M.Wijnholds, S.https://repository.surfsara.nl/api/objects/collection/lotss-dr3/thumbnail2026-08-11T21:16:25Michael Sipior

Oude Hoogeveensedijk 4, 7991PD Dwingeloo, the Netherlands

vo@astron.nlradio continuum: general, techniques: image processing In this data release from the LOw-Frequency ARray (LOFAR) Two-metre Sky Survey (LoTSS) we present 120-168 MHz images covering 88% of the northern sky. The individual pointing images (at 6'' and 20'' resolution) were derived from 12,950 hrs (18.6 PB) of LOFAR High Band Antenna data which were processed through fully automated direction-independent and direction-dependent calibration pipelines that correct for instrumental effects as well as spatially and temporally varying ionospheric distortions. The Stokes I images were then combined, accounting for the rms noise level and telescope beam, to form the final Stokes I mosaic images at 6'' and 20'' resolution, with a central frequency of 144MHz. From the 6'' resolution Stokes mosaics we derived a catalogue of 13,664,379 radio sources (consisting of 16,943,656 Gaussian components), the majority of which have never been detected at radio wavelengths before. These mosaics have a median rms sensitivity of 92 μJy/beam; a random and systematic flux density scale accuracy of approximately 6% and 2%, respectively; an astrometric accuracy of 0.24''; and we estimate that we detect more than 95% of sources with integrated flux densities exceeding nine times the local root mean square noise. To enable thorough scientific exploitation of this unique dataset, we have published two sub-collections. The first contains all the Stokes I mosaic products described above. The second contains the individual pointing products, including calibrated uv data (measurement sets and direction-dependent calibration solutions) to allow for re-imaging or post-processing; Stokes I images at 6' ' and 20'' resolution (with associated scaling factors required to reproduce the mosaic images); Stokes V images at 6'' resolution for each observing epoch; and Stokes Q and U image cubes at 20'' and 4' resolution. This service queries the data products associated with the individual pointings hosted on the Surf Data Repository.Shimwell et al. 2026https://vo.astron.nl/lotss_dr3/q/query_pointings/infoSurveyResearchserved-byThe VO @ ASTRON TAP serviceLicensed under CC-BY-SAhttps://vo.astron.nl/lotss_dr3/q/query_pointings/scs.xml?GETapplication/x-votable+xmlRARight Ascension (ICRS decimal)degpos.eq.rarealDECDeclination (ICRS decimal)degpos.eq.decrealSRSearch radiusdegrealRESPONSEFORMATFile 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.integer180100000true239.20550.0741https://vo.astron.nl/lotss_dr3/q/query_pointings/availabilityhttps://vo.astron.nl/lotss_dr3/q/query_pointings/capabilitieshttps://vo.astron.nl/lotss_dr3/q/query_pointings/tableMetadatahttps://vo.astron.nl/tapLOFARLOFAR.HBA6/660,664,670,676,680,686,690,703,712,719,723,735,739,750,755,899,914,932,936,940,945,958,2050,2063,2067,2078,2083,2094,2098,2109,2114,2125,2129,2142,2145,2158,2162,2167,2178,2189,2193,2199,2203,2209,2215,2219,2236,2252,2257,2268,2272,2284,2288,2293,2298,2306,2311,2315,2325,2331,2343,2346,2358,2378,2405,2408,2437,2441,2447,2452,2467,2571,2576,2581,2587,2599,2602,2617,2623,2630,2634,2645,2648,2662,2693,2696,2707,2724,2728,4853,4857,4863,4948,4952,4959,4964,4970,4978,4989,4995,5007,5014,5027,5044,5048,5054,5060,5064,5069,5073,5085,5091,5100,5105,5115,5203,5221,5225,5236,5240,5245,5269,5272,5279,5284,5288,5295,5299,5310,5313,5327,5331,5341,5346,5357,5361,5372,5380,5384,5396,5400,5406,5409,5419,5426,5435,5442,5452,5457,5468,5472,5477,5481,5495,5498,5511,5527,5530,5537,5548,5558,5560,5577,5583,5587,5597,5608,5614,5618,5628,5635,5650,5662,5668,5682,5687,5691,5698,5707,5712,5717,5723,5734,5747,5758,5761,5772,5785,5792,5797,5802,5807,5814,5823-5824,5829,5832,5848,5854,5857,5874,5879,5883,5894,5898,5903,5907,5917,5923,5933,5937,5948,5959,5963,5974,5978,5996,6005,6009,6016,6028,6032,6037,6041,6055,6058,6063,6070,6079,6085,6090,6100,6106,6115,6125,6129,6139,6197,6200,6207,6213,6217,6223,6227,6237,6243,6255,6259,6339,6349,6353,6365,6369,6384,6391,6395,6401,6414,6418,6430,6434,6439,6460,6466,6471,6475,6486,6501,6505,6516,6520,6529,6537,6544,6550,6554,6595,6607,6609,6615,6641,6647,7177,7186,7197,7204,7208,7214,7216,7228,7233,7239,7254,7264,7269,7273,7285,7288,7303,7307,7317,7322,7334,7347,7358,7366,7370,7375,7377,7389,7395,7407,7409,7419,7433,7443,7454,7460,7464,7474,7484,7491,7501,7511,7521,7532,7537,7556,7566,7568,7580,7586,7591,7595,7616,7680,7685,7746,7757,7767,7770,9046,9050,9062,9066,9078,9082,9107,9119,9125,9129,9135,9139,9158,9172,9176,9188,9192,9197,9204,9212,9301,9305,9317,9321,9331,9367,9370,9382,9386,9397,9401,9413,9417,9428,9432,9444,9450,9460,9464,9469,9478,9482,9487,9491,9501,9513,9519,9523,9533,9540,9549,9559,9569,9580,9584,9589,9595,9602,9614,9618,9623,9627,9645,9657,9670,9674,9732,9736,9743,9747,9757,9763,9774,9779,9790,9793,9804,9809,9820,9826,9831,9835,9846,9850,9855,9858,9869,9884,9889,9899,9904,9909,9914,9929,9939,9957,9960,9967,9969,9981,9984,9989,9995,10020,10034,10116,10120,10123,10130,10139,10151,10167,10170,10216,10261,10265,10277,10281,10293,10297,10313,10325,10329,10341,10345,10357,10360,10367,10373,10377,10388,10392,10404,10410,10420,10426,10436,10440,10450,10468,10472,10477,10481,10491,10505,10511,10513,10527,10531,10542,10546,10551,10561,10574,10578,10583,10604,10608,10613,10617,10632,10636,10641,10645,10651,10658,10662,10678,10682,10687,10692,10698,10708,10712,10719,10724,10734,10738,10748,10758,10765,10772,10782,10787,10798,10802,10812,10817,10823,10841,10849,10855,10858,10870,10879,10891,10898,10908,10917,10923,10934,10943,10955,10960,10963,10974,10980,10989,11003,11008,11017,11027,11038,11044,11053,11063,11074,11083,11090,11097,11111,11115,11125,11129,11139,11148,11152,11158,11170,11177,11184,11187,11199,11206,11210,11221,11224,11231,11236,11246,11250,11262,11270,11279,11284,11294,11299,11320,11323,11330,11340,11345,11356,11362,11371,11376,11385,11393,11405,11415,11419,11425,11436,11446,11450,11461,11466,11477,11481,11487,11492,11496,11502,11507,11518,11520,11526,11542,11546,11552,11555,11572,11576,11581,11587,11620,11630,11634,11652,11663,11665,11671,11682,11693,11697,11776,11785,11791,11798,11811,11821,11828,11837,11848,11858,11868,11873,11883,11890,11905,11918,11921,11927,11938,11948,11953,12032,12621,12625,12638,12641,12652,12656,12668,12759,13314,13324,13328,13335,13339,13344,13351,13355,13367,13371,13387,13394,13406,13415,13419,13433,13447,13451,13463,13467,13479,13495,13499,13509,13515,13526,13530,13545,13570,13580,13584,13589,13593,13600,13607,13610,13845,14888,14895,14979,14989,14993,14999,15003,15010,15020,15030,15045,15050,19453,19710,19774,19790,19796,19800,19806,19810,19822,19826,19839,19854,19858,19870,19874,19886,19890,19903,19906,19919,19923,19934,19939,19950,19954,19965,20030,20046,20050,20062,20066,20078,20082,20095,20110,20114,20126,20129,20142,20146,20156,20162,20172,20177,20187,20192,20199,20203,20222,20226,20239,20243,20254,20259,20270,20274,20286,20290,20300,20304,20317,20320,20332,20337,20343,20347,20354,20366,20370,20380,20386,20396,20400,20406,20416,20423,20427,20438,20457,20464,20470,28117,28121,28149,28415,28502,28506,28511,28518,28522,28527,28531,28543,28559,28563,28579,28597,28600,28611,28622,28627,28637,28642,28653,28657,28663,32598,32602,32614,32629,32633,32668,32677,32681,32694,32698,32703-32704,32709,32712,32724,32728,32734,32742,32760,3276656800.6 58884.81.78448 2.49827https://vo.astron.nl/lotss_dr3/q/query_pointings/coverageRadiolotss_dr3 In this data release from the LOw-Frequency ARray (LOFAR) Two-metre Sky Survey (LoTSS) we present 120-168 MHz images covering 88% of the northern sky. The individual pointing images (at 6'' and 20'' resolution) were derived from 12,950 hrs (18.6 PB) of LOFAR High Band Antenna data which were processed through fully automated direction-independent and direction-dependent calibration pipelines that correct for instrumental effects as well as spatially and temporally varying ionospheric distortions. The Stokes I images were then combined, accounting for the rms noise level and telescope beam, to form the final Stokes I mosaic images at 6'' and 20'' resolution, with a central frequency of 144MHz. From the 6'' resolution Stokes mosaics we derived a catalogue of 13,664,379 radio sources (consisting of 16,943,656 Gaussian components), the majority of which have never been detected at radio wavelengths before. These mosaics have a median rms sensitivity of 92 μJy/beam; a random and systematic flux density scale accuracy of approximately 6% and 2%, respectively; an astrometric accuracy of 0.24''; and we estimate that we detect more than 95% of sources with integrated flux densities exceeding nine times the local root mean square noise. To enable thorough scientific exploitation of this unique dataset, we have published two sub-collections. The first contains all the Stokes I mosaic products described above. The second contains the individual pointing products, including calibrated uv data (measurement sets and direction-dependent calibration solutions) to allow for re-imaging or post-processing; Stokes I images at 6' ' and 20'' resolution (with associated scaling factors required to reproduce the mosaic images); Stokes V images at 6'' resolution for each observing epoch; and Stokes Q and U image cubes at 20'' and 4' resolution.lotss_dr3.pointings In this data release from the LOw-Frequency ARray (LOFAR) Two-metre Sky Survey (LoTSS) we present 120-168 MHz images covering 88% of the northern sky. The individual pointing images (at 6'' and 20'' resolution) were derived from 12,950 hrs (18.6 PB) of LOFAR High Band Antenna data which were processed through fully automated direction-independent and direction-dependent calibration pipelines that correct for instrumental effects as well as spatially and temporally varying ionospheric distortions. The Stokes I images were then combined, accounting for the rms noise level and telescope beam, to form the final Stokes I mosaic images at 6'' and 20'' resolution, with a central frequency of 144MHz. From the 6'' resolution Stokes mosaics we derived a catalogue of 13,664,379 radio sources (consisting of 16,943,656 Gaussian components), the majority of which have never been detected at radio wavelengths before. These mosaics have a median rms sensitivity of 92 μJy/beam; a random and systematic flux density scale accuracy of approximately 6% and 2%, respectively; an astrometric accuracy of 0.24''; and we estimate that we detect more than 95% of sources with integrated flux densities exceeding nine times the local root mean square noise. To enable thorough scientific exploitation of this unique dataset, we have published two sub-collections. The first contains all the Stokes I mosaic products described above. The second contains the individual pointing products, including calibrated uv data (measurement sets and direction-dependent calibration solutions) to allow for re-imaging or post-processing; Stokes I images at 6' ' and 20'' resolution (with associated scaling factors required to reproduce the mosaic images); Stokes V images at 6'' resolution for each observing epoch; and Stokes Q and U image cubes at 20'' and 4' resolution.accrefIdentifier used to reference the pointing in DataLink.meta.id;meta.maincharindexednullableownerOwner of the datacharnullableembargoDate the data will become/became publicacharnullablemimeMIME type of the file servedmeta.code.mimeAccess.FormatcharnullableaccsizeSize of the data in bytesbyteVOX:Image_FileSizeAccess.Sizelongnullablesdr_urlSURF Data Repository record for this pointing.meta.ref.urlcharnullablepointing_idThe name of the pointing.meta.id;meta.maincharnullablecenteralphaApproximate center of pointing, RA.degpos.eq.ra;meta.maindoublenullablecenterdeltaApproximate center of pointing, Dec.degpos.eq.dec;meta.maindoublenullableinstrumentIdentifier of the originating instrument.meta.id;instrcharnullabledateobsEpoch at midpoint of observation.dVOX:Image_MJDateObsdoublenullablerefframeCoordinate system reference frame.VOX:STC_CoordRefFramecharnullableequinoxEquinox of the given coordinates.yrVOX:STC_CoordEquinoxdoublenullablebandpassidFreeform name of the bandpass used.VOX:BandPass_IDcharnullablebandpassunitUnit of bandpass specifications.VOX:BandPass_UnitcharnullablebandpassrefvalCharacteristic quantity for the bandpass of the image.mVOX:BandPass_RefValuedoublenullablebandpasshiUpper limit of the bandpass (in BandPass_Unit units).mVOX:BandPass_HiLimitdoublenullablebandpassloLower limit of the bandpass (in BandPass_Unit units).mVOX:BandPass_LoLimitdoublenullablelofar_obsidsObsID(s) of the LOFAR observation(s) used for imaging the central pointing.meta.id;obsintnullablerecord_idSURF Data Repository record ID.meta.bibcharnullabledatefirstobsEpoch of first observationdtime.epoch;time.startdoublenullabledatelastobsEpoch of last observationdtime.epoch;time.enddoublenullabledateallobsEpoch of all observationstime.epochdoublenullablerelated_productsLink to related products for the observation.meta.ref.urlcharnullable