The LOFAR Two-metre Sky Survey (LoTSS) VII. Third data release (P006+08)

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

Dataset Open

The LOFAR Two-metre Sky Survey (LoTSS) VII. Third data release (P006+08)

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 P006+08.

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

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Files (380.3 GB)

Name	Size	Status	Download all
dynspec.tar	4.1 GB	Online	Download
Checksum: md5:a2323fe8662bc204718d8d7128c9da40 EPIC PID: 11112/0a0dea03-ed70-4eca-a029-3e155c9c6792 Description: Dynamic spectra of target sources and offset positions to aid interpretation.
images.tar	21.7 GB	Online	Download
Checksum: md5:f1f642afa79188a0b94b10844e805595 EPIC PID: 11112/747d30f9-1a93-4ec2-9b1c-748dba7ebfc2 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	405.4 MB	Online	Download
Checksum: md5:b7c2026efa6b7493dcfd3733e0c483a5 EPIC PID: 11112/189ce37d-78ce-43c8-b4f4-7c288e7b9aa8 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: md5:7ff6b646837bde249274140b0b8b7ffe EPIC PID: 11112/872f355a-eda3-4df8-888a-4e0a56138cd2 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_P006+08.tar.gz	87.1 MB	Online	Download
Checksum: md5:0da7f9b9e88a74b953e719fe7e81645b EPIC PID: 11112/9a139b33-077e-4426-baba-6bf9fe40050f Description: 20′′ RM-synthesis products, including QU spectra, Faraday depth and polarization maps, noise products and catalogues.
stokes_large.tar	41.2 GB	Online	Download
Checksum: md5:7119098d07e8a7e88af42e0438dde1f3 EPIC PID: 11112/5a0d0fcf-8875-4740-8d3d-7e1930e194d1 Description: The low (20′′) resolution 120-168MHz Stokes Q and U image cubes for this pointing.
stokes_small.tar	9.8 GB	Online	Download
Checksum: md5:5eedcc1297153374971829c4b3b3bdc8 EPIC PID: 11112/b1374ced-d0e7-4285-aa58-d5e9ca90ebcc 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_L800954.tar	31.9 GB	Online	Download
Checksum: md5:442b82c65ba3d70cb196da9843035c39 EPIC PID: 11112/f4de66b5-5205-4be4-95f1-c16224c7187a 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_L800982.tar	57.9 GB	Online	Download
Checksum: md5:66597b2ef8783931885d2492dd687493 EPIC PID: 11112/0f76561f-1bea-4d27-a88c-c3f1fcf92928 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_L801566.tar	57.9 GB	Online	Download
Checksum: md5:9daa9ff0386f15fb465077383d22336a EPIC PID: 11112/30265e72-142e-4c07-a3fc-6019d648c77d 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_L802778.tar	31.9 GB	Online	Download
Checksum: md5:a240554917086571bec1f73d3843fdac EPIC PID: 11112/7a727351-9d4d-4941-935c-233f45cb62fd 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_L802806.tar	57.9 GB	Online	Download
Checksum: md5:3eab7ddaa3e0b405bbd04512806c72e5 EPIC PID: 11112/08e2aa52-7195-4d77-b854-add032282452 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_L802848.tar	52.5 GB	Online	Download
Checksum: md5:e5d5d409a05f4a88a975347126bf69d7 EPIC PID: 11112/d25d7a79-2207-4e19-aaa8-2f41bae903f4 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	11.2 GB	Online	Download
Checksum: md5:942c74509d4aff9e59b58d093e9011de EPIC PID: 11112/f45ded06-2b1c-4162-bb46-08bcd16a6d92 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/P006%2B08
centeralpha	6.196939752638888
centerdelta	8.387964722166421
instid	LOFAR.HBA
dateobs	59210.692476851866
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	6.1967291666667, 8.3881730555556
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	2.047652927788848, 4.228507420541043, 1.9582639409402531, 12.50356051976358, 10.435194392393173, 12.50356051976358, 10.345805405544573, 4.228507420541043
related_products	https://vo.astron.nl/lotss_dr3/q/dlpointing/dlmeta?ID=ivo%3A//astron.nl/%7E%3FLoTSS-DR3/P006%2B08
datefirstobs	59201.707638889086
datelastobs	59216.67430555541
dateallobs	59201.707638889086, 59202.70694444422, 59210.692476851866, 59213.68702546274, 59214.68472222239, 59216.67430555541
id	P006+08

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The LOFAR Two-metre Sky Survey (LoTSS) VII. Third data release (P006+08)

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The LOFAR Two-metre Sky Survey (LoTSS) VII. Third data release (P006+08)

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