The LOFAR Two-metre Sky Survey (LoTSS) VII. Third data release (P200+10)

Shimwell, 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.

Published February 16, 2026 | Version v1

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The LOFAR Two-metre Sky Survey (LoTSS) VII. Third data release (P200+10)

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 μ Jy/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. This collection 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 is pointing P200+10.

Publication: Shimwell et al. 2026 (https://doi.org/10.1051/0004-6361/202557749)

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Files (258.3 GB)

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images.tar	10.9 GB	Online	Download
Checksum: md5:7aad87c1403b3fd237854174597cac96 EPIC PID: 11112/f461b1da-7c76-42cd-ad5a-9494487c4e5d Description: The Stokes I high (6′′) and low (20′′) 120-168MHz continuum images for this pointing (including restored, residual, model and mask images).
misc.tar	324.4 MB	Online	Download
Checksum: md5:bceb82ef8c7f4a0c9a67f67839bef93b EPIC PID: 11112/4f938ad9-8ae9-4c94-8162-7b362f6cf547 Description: Miscellaneous products (logs and diagnostics) for the direction dependent calibration and imaging processing (DDF-pipeline) of this pointing.
mosaicing_misc.tar	1.7 GB	Online	Download
Checksum: md5:c206f0a4d171b8378051ef8bc4acf945 EPIC PID: 11112/ee1c8fcb-fd2c-4fa3-8b63-7c2bb66a16a4 Description: The flux density scaling factors (NVSS scaling and planar alignment) to be applied during mosaicing as well as the facets identified as bad.
rmsynth_P200+10.tar.gz	34.1 MB	Online	Download
Checksum: md5:8554c212ab33d02e6a0d29dde805c3d9 EPIC PID: 11112/5df8c8f0-2e59-47db-9929-3c192ae3f488 Description: 20′′ RM-synthesis products, including QU spectra, Faraday depth and polarization maps, noise products and catalogues.
stokes_large.tar	41.1 GB	Online	Download
Checksum: md5:7663bd358c401dfe6cd9216298955473 EPIC PID: 11112/76e62478-2769-4f0a-a148-fb46b0ff34dd Description: The low (20′′) resolution 120-168MHz Stokes Q and U image cubes for this pointing.
stokes_small.tar	57.0 GB	Online	Download
Checksum: md5:90b5df5a768f5317cef34d1d7c72db2e EPIC PID: 11112/4ea58c1b-2184-4880-a0cf-09014e12c4de Description: The very low (4′) resolution 120-168MHz Stokes Q and U image cubes for this pointing and, where available, the low (20′′) resolution Stokes V 120-168MHz image.
uv_L2033642.tar	22.7 GB	Online	Download
Checksum: md5:4ded48cd5982d51f61139825ca875cae EPIC PID: 11112/2fc69678-747f-489a-af05-8ffcf9d23b39 Description: The uv-data for an individual pointing, together with the accompanying direction-dependent and refined direction-independent calibration solutions. The solutions are to be applied during imaging, along with those from uv_misc.tar, if available. Depending on how the pointing is packaged, the uv data may be provided as a single uv.tar or as multiple uv_LXXXXXX.tar files, where XXXXXX denotes the observation LOFAR LTA SASID of an observing epoch.
uv_L2034080.tar	21.2 GB	Online	Download
Checksum: md5:da1c93947048d62ca63c1d59715784f5 EPIC PID: 11112/387aa6a6-f014-4401-a7e1-19c8b1d0b962 Description: The uv-data for an individual pointing, together with the accompanying direction-dependent and refined direction-independent calibration solutions. The solutions are to be applied during imaging, along with those from uv_misc.tar, if available. Depending on how the pointing is packaged, the uv data may be provided as a single uv.tar or as multiple uv_LXXXXXX.tar files, where XXXXXX denotes the observation LOFAR LTA SASID of an observing epoch.
uv_L2034086.tar	20.4 GB	Online	Download
Checksum: md5:b5f8a1d83344d99f7c9731f4ef7e77b5 EPIC PID: 11112/33993700-7c59-42ea-9b08-1d6020781fc5 Description: The uv-data for an individual pointing, together with the accompanying direction-dependent and refined direction-independent calibration solutions. The solutions are to be applied during imaging, along with those from uv_misc.tar, if available. Depending on how the pointing is packaged, the uv data may be provided as a single uv.tar or as multiple uv_LXXXXXX.tar files, where XXXXXX denotes the observation LOFAR LTA SASID of an observing epoch.
uv_L2034094.tar	21.1 GB	Online	Download
Checksum: md5:5efd4498e48d2b74e8d63319de3c6ddf EPIC PID: 11112/73a3dde8-363c-458e-9dd9-61167399f465 Description: The uv-data for an individual pointing, together with the accompanying direction-dependent and refined direction-independent calibration solutions. The solutions are to be applied during imaging, along with those from uv_misc.tar, if available. Depending on how the pointing is packaged, the uv data may be provided as a single uv.tar or as multiple uv_LXXXXXX.tar files, where XXXXXX denotes the observation LOFAR LTA SASID of an observing epoch.
uv_L2034101.tar	30.8 GB	Online	Download
Checksum: md5:1b66d138ed3ee844116d7a8d1c73eae4 EPIC PID: 11112/4bf1f687-8bcf-4201-9f8a-a53d878ef39b Description: The uv-data for an individual pointing, together with the accompanying direction-dependent and refined direction-independent calibration solutions. The solutions are to be applied during imaging, along with those from uv_misc.tar, if available. Depending on how the pointing is packaged, the uv data may be provided as a single uv.tar or as multiple uv_LXXXXXX.tar files, where XXXXXX denotes the observation LOFAR LTA SASID of an observing epoch.
uv_L2034105.tar	21.1 GB	Online	Download
Checksum: md5:a85c3085b3f07d2cb5d94756dc3d3136 EPIC PID: 11112/83c0e951-b9b3-4bcb-92e0-6570e34a06b8 Description: The uv-data for an individual pointing, together with the accompanying direction-dependent and refined direction-independent calibration solutions. The solutions are to be applied during imaging, along with those from uv_misc.tar, if available. Depending on how the pointing is packaged, the uv data may be provided as a single uv.tar or as multiple uv_LXXXXXX.tar files, where XXXXXX denotes the observation LOFAR LTA SASID of an observing epoch.
uv_misc.tar	9.9 GB	Online	Download
Checksum: md5:1240434a55c8eaba9712e617a921f03b EPIC PID: 11112/c92b86f2-5eff-495d-8baa-10247b1f71d6 Description: Calibration facet boundaries, calibration sky model, as well as merged and smoothed direction dependent calibration solutions for use during re-imaging.

Additional details

Is described by: Publication: 10.1051/0004-6361/202557749 (DOI)

Created: 2026-02-16
Accepted: 2026-01-13

Metadata

$schema	https://repository.surf.nl/schema/lotss-dr3
accref	https://vo.astron.nl/getproduct/LoTSS-DR3/P200%2B10
centeralpha	200.1981696852332
centerdelta	9.695124999935246
instid	LOFAR.HBA
dateobs	60360.09126157407
naxes	4
pixelsize	19845, 19845, 1, 1
pixelscale	0.00041666667675599456, 0.00041666667675599456
refframe	ICRS
wcs_equinox
wcs_projection	SIN
wcs_refpixel	9923.0, 9923.0
wcs_refvalues	200.19795833333, 9.6953333333333
wcs_cdmatrix	-0.00041666667675599456, 0.0, 0.0, 0.00041666667675599456
bandpassid	120-168MHz
bandpassunit	m
bandpassrefval	2.081892
bandpasshi	2.4982705
bandpasslo	1.7844789
pixflags	Z
coverage	196.0407985599617, 5.532235486960611, 195.93685185860568, 13.807127046723327, 204.45906480805456, 13.807127046723327, 204.3551181066985, 5.532235486960611
related_products	https://vo.astron.nl/lotss_dr3/q/dlpointing/dlmeta?ID=ivo%3A//astron.nl/%7E%3FLoTSS-DR3/P200%2B10
datefirstobs	60317.2166435183
datelastobs	60405.963159722276
dateallobs	60317.2166435183, 60330.14028935181, 60365.10763888899, 60360.09126157407, 60377.042407407425, 60404.96446759254, 60405.963159722276
id	P200+10

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The LOFAR Two-metre Sky Survey (LoTSS) VII. Third data release (P200+10)

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The LOFAR Two-metre Sky Survey (LoTSS) VII. Third data release (P200+10)

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